create graph of the two-variable data with a regression line, r, r2, and separate residual plot
Q: A. Using the data listed below (in millions), calculate the percentage change for average HCS…
A: The given data is as follows: Region2017 (act)2018 (act)2019 (act)2020 (est)2021…
Q: Find the middle proportions μ = 30, o 30, o = 7 p(27<x<38) H = 25, o = 9
A: By using the standard normal distribution, [z].
Q: b) Find the probability that a randomly selected male in the US between the ages of 40 and 49 has a…
A: If X follows normal distribution with mean =103.1standard deviation = 4.32
Q: A poll showed that 50.9% of Americans say they believe that life exists elsewhere in the galaxy.…
A: The given percentage of Americans who are said to believe that life exists elsewhere in the galaxy…
Q: A nutritionist claims that the mean tuna consumption by a person is 3.4 pounds per year. A sample of…
A: The population mean = 3.4The sample size n = 60The sample mean = 3.3The standard deviation = 1.15
Q: 1. Mr. Mearig has an unintentionally acquired collection of coffee mugs in his house. To perform a…
A: Let X denote the height of the mug in inches and Y denote the temperature.The data on X and Y is…
Q: what would be the most appropriate probability distribution for each of the following random…
A: The probability distribution use to find probability of any random variable.Probability distribution…
Q: Suppose that X | N ∼ Binom(N, p), and that N is also a random variable with distribution Binom(m,…
A: Assume that , where N is also a random variable with distribution .The objective is to find the…
Q: Express the confidence interval 620 < μ< 693.4 in the form of T + ME. T+ME +
A: Confidence intrval :x¯−ME<μ<x¯+MEx¯=Sample mean.ME=Margin of error.
Q: Suppose you are the marketing manager of a firm, and you plan to introduce a new product to the…
A: Net profit = Sales volume ( price per unit - unit cost) - fixed costSales volume is 50,000 units for…
Q: 4) ad In a survey conducted by the Gallup organization, 1,017 adults were asked "In general, how…
A: The provided information is as follows:The total number of respondents is .The total number of…
Q: THE MEASUREO RESISTANCE OF A SAMPLE 10 RESISTORS FROM A Box of १००15 AS BELOW. ALL VALUES ARE IN…
A: Given that,The measured resistance of a sample 10 resistors.The sample size is 10. The data is:…
Q: QUESTION 23 To determine the ideal smoothing constant to be used for a simple exponential smoothing…
A: The given data is:Forecast 1Forecast 2Forecast 3YearSales (R millions)Sales (R millions)Sales (R…
Q: 1. An Educational Psychologist is interested in examining the effects of different learning…
A: An educational psychologist is interested to examine the effect of different learning technique on…
Q: Let z be a standard normal random variable with mean μ = 0 and standard deviation = 1. Use Table 3…
A: From the provided information,
Q: You own a hamburger franchise and are planning to shut down operations for the day, but you are left…
A: The provided information is as follows:The total number of buns left is 12.The total number of beef…
Q: During one shift, the express lane clerk recorded how many times customers violated the "10 items or…
A: Number of customers who violated 10 or less items rule is shown in a histogram.
Q: Consider that we are interested in computing the time weighted average number of cars parked in the…
A: The given data is as follows: Entry12:45:00 AMEntry 1:00:00 AMEntry3:30:00 AMExit5:15:00…
Q: What unit of analysis is needed with the Level of measurement for nominal and ratio.
A: The unit of analysis refers to the entity that is being studied.
Q: Assume the random variable x is normally distributed with mean μ=82 and standard deviation σ=4. Find…
A: Given the random variable x is normally distributed with mean μ = 82 and standard deviation σ =…
Q: 1. Consider the linear regression models. The p-values are shown in parentheses [5 points). Model 1…
A: Given the 3 models with R2 values and p-values of its coefficient.want to comment on which model…
Q: an the table above be explained please? I don't quite understand. Also, can Step 4 be expanded or…
A: The paired data set of the variables advertising expenditure and membership subscription is given.
Q: If a hypothesis is tested at the a=0.05 level of significance, what is the probability of making a…
A: A hypothesis is tested at the level of significance.
Q: 1 2 3 4 5 1 11 10 7 7 Type 2 of 14 14 14 10 Stool 3 11 12 13 10 Subject 6 7 8 9 x 9 8 7 8.44 8 9 11…
A: k= 4 groups or treatment Each group has 9 observation Total observation
Q: The Human Resource Manager at a manufacturing plant noticed that there was a high rate…
A: The objective of this question is to understand the basic concepts of statistics such as population,…
Q: If a seed is planted, it has a 65% chance of growing into a healthy plant. If 9 seeds are planted,…
A: Suppose a random variable X, defines the number of seeds that do not grow.
Q: The length of 45 items from a manufacturer was measured and the mean length of this sample was found…
A: The sample size is 45, the sample mean is 1.15 and the population standard deviation si 3.0.
Q: Can you find la significant difference in blood types based on sex? Make sure you clearly state Ho,…
A: Given,the distribution of gender and blood groups.To conduct the test of significant differences in…
Q: There are 20 crew members at a given university. You want to calculate the probability that their…
A: The question is about sampling distribution.Given :Selected no. of crew members ( n ) = 20Population…
Q: What is the relationship between the attendance at a major league ball game and the total number of…
A: Let X denote the attendance in thousands and Y denote the runs scored in a major league ball game.…
Q: In a factory, packs of sweets are supposed to contain 1kg each. In reality, the weights are normally…
A: Suppose the random variable x defines the weights of packs of sweets.
Q: A student government organization is interested in estimating the proportion of students who favor a…
A: The SRS gives all the participants an equal chance of being selected in the sample.
Q: For many years businesses have struggled with the rising cost of health care. But recently, the…
A: The formula of the margin of error is,where, denotes the proportion value denotes the critical…
Q: x is a gaussian random variable with a PDF as described above, where μ is the mean, σ is the…
A: Given that X is a Gaussian random variable with μ is the mean, σ is the standard deviationFx(-4.8) =…
Q: In a survey of opinions regarding same-sex marriage, 14% of a sample of 1005 adults from Country A…
A: From the information, given thatn1=1005=0.14n 2=1987 = 0.17.The formula of the confidence interval…
Q: Test the claim below about the mean of the differences for a population of paired data at the level…
A: We have given that the samples are random and dependent, and the population is normally…
Q: Suppose the entire length of one basketball game (including rests, timeouts) follows a normal…
A: The given data is as follows:Population mean, Population standard deviation,
Q: Consider the Markov chain X given by the diagram 0 1 0 3 0 ܝ ܕ | ܠܕ 1 6 111 11/2012 213 ܝ ܕ | ܠ 12 O…
A:
Q: Question 1: Data For the geometric model of exercise sheet 5, question 2, suppose that for a prior…
A: Given that the prior distribution for the geometric model is a distribution.
Q: Rounded to three decimal places, what is the value of r for this data set? Variable x 8 15 3 815 7…
A: From the provided information, xy850157532373121814682096
Q: Using R Suppose the distributions of arrival and service times were normal instead of exponential.…
A: Assume that the distributions of arrival and service times were normal instead of exponential. Let…
Q: In September 2011, Gallup surveyed 1,004 American adults and asked them whether they blamed Barack…
A: (1)Given that,
Q: draw what a positive relationship between variables would look like on the x & y axis
A: It is needed to draw a positive relationship between variables on x and y axis.
Q: Write out your answers to questions in complete sentences. Include all relevant R code and output,…
A: The dataset used for the given study is the Wong dataset which can be obtained from the"car"…
Q: 3) You want to examine competition in barnacles. You examine two species and count the number of…
A: Given,we examine two species and count the number of each species at the low and high water marks…
Q: Find the least-squares regression line ŷ = ba + b₁ through the points (-2, 2), (3, 6), (5, 14), (8,…
A: We have given the data points as follows: -22365148191027
Q: Are Florida Lakes Acidic or Alkaline? The pH of a liquid is a measure of its acidity or alkalinity.…
A: a)The descriptive statistics for the pH values are given.
Q: needed) b. Identify the best point estimate of mu and the margin of error. The point estimate of mu…
A: Let be the population mean time between eruptions of the old faithful geyser.Given that,The…
Q: x is a gaussian random variable with a PDF as described above, where μ is the mean, σ is the…
A: For the given Gaussian distribution, the parameters are specified as follows:The mean, μ.The…
Q: The U.S. Dept. of Treasury claims the mean mass of a quarter is 5.670 g.
A: Given that
create graph of the two-variable data with a regression line, r, r2, and separate residual plot
Step by step
Solved in 3 steps with 4 images
- Assume that there is a 6% rate of disk filure in a year. a) If all your computer data storage is stored on a hard drive with a copy stored on a second hard disk drive, what is the probabiblity that during that year you can avoid catastrophe with at least one working drive? b) If copies of all your computer data are stored on three independent hard disk drives, what is the probablility that during a year you can avoid catastrophe with at least one working drive?TION 18 Wholemark is an Internet order business that sells one popular New Year's greeting card once a year. The cost of the paper on which the card is printed is $0.05 per card, and the cost of printing is $0.15 per card. The company receives $2.15 per card sold. Since the cards have the current year printed on them, unsold cards have no salvage value. Its customers are from the four areas: Los Angeles, Santa Monica, Hollywood, and Pasadena. Based on past data, the number of customers from each of the four regions is normally distributed with a mean of 2,000 and a standard deviation 500. (Assume these four are independent.)What is the optimal production quantity for the card? (Use Excel's NORM.S.INV() function to find the z value. Round z value to 2 decimal places. Round your answer to the nearest whole number.)A newly appointed school district superintendent releases a plan for thenext 20 years that affects the schools within the boundaries of the district.In this plan, there is new policy that states that if a high school has lessthan 100 students, then the school will be shut down. Calamanco HighSchool has a population of 1,417 students, but it is losing students at anaverage rate of 109 students per year. This school used to house morethan 5,000 students but the district has been struggling in recent years andlosing people to more affluent nearby districts and cities. Somecommunities are concerned about this decreasing rate because therewill be a time when the district may shut the school down. Let xx representthe number of full years that the school is operational.Part A: If this trend continues, write a function that gives the studentpopulation at Calamanco High School after xx years before theschool is shut down by the district. Part B: What constraints does this situation put on the…
- Suppose insurance agency services customers who have both a homeowner’s policy and an automobile policy. For each type of policy, a deductible amount must be specified. For an automobile policy, the choices are TZS100 and TZS250, whereas for a homeowner’s policy, the choices are 0, TZS100, and TZS200. Suppose also that an individual is selected at random from the agency’s files. Let X = his deductible amount on the auto policy and Y = his deductible amount on the homeowner’s policy (a) What are the possible (X, Y) pairs? (b) Suppose the joint probability mass function is given by the insurance company in the accompanying joint probability in the following Table Table: Discrete Joint Probability Distribution for X and Y P(x,y) 0 100 200 X 100 0.2 0.10 0.2 250 0.05 0.15 0.3 What is p (100, 100) What is P (Y greater than 100)?Suppose a company charges a premium of $150 per year for an insurance policy for storm damage to roofs. Actuarial studies show that in case of a storm, the insurance company will pay out an average of $8000 for damage to a composition shingle roof and an average of $12,000 for damage to a shake roof. They also determine that out of every 10,000 policies, there are 7 claims per year made on composition shingle roofs and 11 claims per year made on shake roofs. What is the company’s expected value (i.e., expected profit) per year of a storm insurance policy? What annual profit can the company expect if it issues 1000 such policies? Determine the probability of a composition shingle roof claim out of 10,000 = ______ Determine the probability of a shake roof claim out of 10,000 = ______ How many claims are made out of 10,000? = _______ What is the probability of no claims out of 10,000? = _______ How much does each shingle roof claim cost the company, don’t forget each person pays $150…A manufacturer of exercise equipment knows that 15% of their products aredefective. They also know that only 35% of their customers will actually use the equipment in the first year after it is purchased. If there is a one-year warranty on the equipment, what proportion of the customers will actually make a valid warranty claim?
- A polling organization has been hired to conduct a survey to determine the proportion of people who are likely to support an upcoming ballot initiative. To help determine the size of the sample required for the main poll, a preliminary poll of 20 people is taken that yields the results below. (Yes indicates that the person will support the initiative, No indicates that they won't.) YesYesNoNoNoYesYesYesYesYesYesNoNoYesYesNoYesYesNoNoYesNoYesNoYesYesYesYesYesYesNoYesYesYesNoNoYesNoNoNo Based on the results of the peliminary poll, how large a sample is required for the main poll, assuming that the main poll should have a margin of error of 3% and a confidence level of 97.8%. Sample Size =A researcher for a cereal company wanted to demon-strate the health benefits of eating oatmeal. A sampleof 9 volunteers was obtained and each participant ate afixed diet without any oatmeal for 30 days. At the endof the 30-day period, cholesterol was measured foreach individual. Then the participants began a second30-day period in which they repeated exactly the samediet except that they added 2 cups of oatmeal eachday. After the second 30-day period, cholesterol levelswere measured again and the researcher recorded thedifference between the two scores for each participant.For this sample, cholesterol scores averaged MD=16points lower with the oatmeal diet with SS=538 forthe difference scores. Are the data sufficient to indicate a significant change in cholesterol level? Use a two-tailed test with a= .01. Compute r2,the percentage of variance accounted for by the treatment, to measure the size of the treatment effect. Write a sentence describing the outcome of the hypothesis test and…Suppose there is a 0.9986 probability that arandomly selected 30-year-old male will live to theend of the year. A life insurance company charges$161 for insuring that the male will live through theyear. If the male does not survive the year, thepolicy pays out $100,000 as a death benefit. If a 30-year-old male purchases the policy, what is hisexpected value?
- A private pilot wishes to insure his airplane for $200,000. The insurance company estimates that atotal loss will occur with probability 0.002, a 50% loss with probability 0.01, and a 25% loss withprobability 0.1. Ignoring all other partial losses, what premium should the insurance company chargeeach year to realize an average profit of $500?A population of 200 healthy men was followed up for the development of prostate cancer. 10 men were followed-up for 1 year and were then lost to follow-up. After being followed-up for 5 years, 10 men developed prostate cancer. The remaining men who never developed prostate cancer were followed for 10 years. Calculate the total number of person years of observation accrued by this populationSuppose that we want to estimate the true rate r of covid-positive people in a popu- lation (where they are reluctant to disclose their status). We use the two-coin-toss method, and those who toss two heads will lie about their status, reporting the opposite status. After flipping their coins, 36% of the people report that they are covid-positive. What is our estimate for the rate r of covid-positive people in this population?