Question 2. Crescent Oil has developed three new blends of gasoline and must decide which blend or blends to produce and distribute. A study of the miles per gallon ratings of the three blends is being conducted to determine if the mean ratings are the same for the three blends. Five automobiles have been tested using each of the three gasoline blends and the miles per gallon ratings; Automobile (Block) 1 2 3 4 5 Type of Gasoline (Treatment) Blend X Blend Y Blend Z 31 30 29 33 26 30 29 29 31 25 29.8 Treatment Means a. Compute the analysis of variance for the randomized block design 30 29 28 29 26 28.8 28.4 Block Means 30.333 29.333 28.667 31.000 25.667

Q: In an early home game, an NBA team made 66 of their 100 free throw attempts. In one of their last…

A: The given information is,Early Home GameLast Home gameNumber of attempts madeNumber of free throw…

Q: A paired two-tailed t-test uses two columns of data. If in either column there are 11 observations,…

A: From the provided information,Number of observations (n) = 11

Q: A. What is the probability that at least one of the doctors going to the conference is a Harvard…

A: Number of doctors is(n(D))=12Number of harward university n(H)=3Number of doctors randomly…

Q: Why do I (your professor) not use the pooled proportions when testing for zero difference?   A)…

A: We are asked to explain why we do not use the pooled proportion when testing for zero difference.We…

Q: Fill in the P(X=x) values to give a legitimate probability distribution for the discrete random…

A: From the provided information,The probability distribution is given for the discrete random variable…

Q: Forty percent of players scored 8 points or Sixty percent of players scored 8 points or more - less…

A: Given that,The 40th percentile for points scored per player in a game is 8.That is,P40 = 8

Q: 1. The following measurements have been obtained in a study: No. y x1 X2 No. y x1 7 8 1.14 1 2 3 4 5…

A: Consider the given data:…

Q: Suppose six pet food stores in the area were surveyed, and the following data shows how many types…

A: The given data is 7, 7, 9, 9, 11, 11.

Q: If you roll two dice what’s the probability of rolling a seven the numbers on the dice add up to…

A: we roll two dice total possibilities = 62=36all outcomes are equally likely

Q: Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and…

A: the standard normal distribution with mean 0 and standard deviation 1 z is on the right side of the…

Q: Identify the values needed to calculate a confidence interval at the 99% confidence level. Then find…

A: It is given that favourable cases, x = 76Sample size, n = 350Confidence level = 99%

Q: The Chicago police department was asked by the mayor's office to estimate the cost of crime to…

A: From the provided information,

Q: Please show all workings 1. One hundred persons were asked, "Do you favour regional integration?".…

A: Of the 35 that answered "no" to the question, 14 were female. Of the 65 that answered "yes" to the…

Q: Women's heights are normally distributed with mean 63.7 in. and standard deviation 2.9 in. = 21.…

A: Mean = 63.7 inchStandarad deviation =2.9 inch

Q: Actuary Exams A survey of 35 individuals who passed the seven exams and obtained the rank of Fellow…

A: From the provided information,Confidence level = 95%

Q: Suppose that you have the following fitted value: log Income; = 3.2145 + 0.1343 × log Expi (0.0195)…

A: The fitted regression model is:log Incomei^=3.2145+0.1343×log ExpiHere the dependent variable "log…

Q: An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city…

A: The variance of the distribution of the per capita income (in thousand dollars), σ2=$129.96.The…

Q: Calculate the minimum sample size that you must have to meet these requirements.

A: Let p be the pop. prop. of college students in the state who receive the form of financial aid.Given…

Q: A random variable is normally distributed with a mean of μ50 and a standard deviation of a = 5. a.…

A: The formula of the Z-score is,Where,X denotes the raw data point,µ denotes the population mean,σ…

Q: Using the table above, find the equation of a line of the data by using the two data points (1, 1)…

A: Given,data of the number of days 10 km run and the weight loss (in kgs) - Number of days…

Q: You are a data analyst for a health insurance company and want to estimate the population mean of…

A: The number of patients is 32.

Q: You have taken a random sample of size n=85 from a normal population that has a population mean of u…

A:

Q: Find the margin of error for the given values of​ c, σ​, and n. c=0.90​, σ=2.3​, n=81 Level of…

A: Given, c=0.90, σ=2.3 and n=81.

Q: An exit poll is taken of 3,350 voters in a statewide election. Let X denote the number who voted in…

A: We have given thatProbability (p) = 60% = 0.60Number of voters (n) = 3350Let X denote the number who…

Q: Describe what is misleading in the visual display of data below. World Population, in Billions…

A: From the above diagram, we can see how the World population has increased from year to year. Since…

Q: . If the machine is running smoothly, there is 1% chance that by the next morning it will have…

A: Given that  to be the state of the machine on the morning of day for .

Q: We use the t distribution to construct a confidence interval for the population mean when the…

A: The objective is to find the value of the tα2,df for the given scenarios.For the given level of…

Q: Price of Laptop Computers (in Dollars) Class Frequency Relative Frequency Cumulative Frequency…

A: It is given that the frequency distribution table.

Q: A marketing researcher is hired by a corporation to conduct a study and estimate the population mean…

A: The question is about sample size estimation.Given : Maximum error ( E ) = 5Standard deviation of…

Q: Supplier claims that they are 95% confident that their products will be in the interval of 20.45 to…

A: Confidence interval of Supplier claims = 20.45 to 21.05The calculated confidence interval of the…

Q: did the team significantly improve its free throw percentage (left-tailed test)?

A: Let p1 and p2 be the two population proportions for the early home game and last home game…

Q: The following is data from persons who recidivated. The researcher wants to know if indi data in the…

A: p1^=0.33,p2^=0.38,N1=150,N2=110,α=5

Q: (c) Construct a 95% confidence interval for the population standard deviation of the number of…

A: A sample of 12 jars of peanuts from the storage faculity and measures their contents.

Q: Archeologists have studied sizes of Egyptian skulls in an attempt to determine whether breeding…

A: We have given the following data: 127.6138.3126.2131.7142.7135.3138.6128.9Sample size: Confidence…

Q: a) Find the value of ‘*’ and Find the expected category of hurricane to make landfall, E(X).   What…

A: xP(X=x)10.4120.3430.1340.075*

Q: In a recent year, there were about 3,000,000 skydiving jumps and 21 of them resulted in deaths.​ ​…

A: The given data is as follows:The objective is to compute the probability of dying when making a…

Q: Find the 95% confidence interval of the true mean.

A: Let  be the population mean.Given that,Sample size Sample mean Standard deviation Confidence level

Q: Find the minimum sample size required to estimate the mean pulse rate of adult females in  order to…

A: confidence level=90%Margin of error(E)=4standard deviation()=8.5

Q: In a test of H0 : μ = 5 versus H1 : μ ≠ 5, the sample mean was X¯¯¯ = 4 and the P-value was 0.21.…

A: Null hypothesis H0 : μ = 5 Alternate hypothesis H1 : μ ≠ 5sample mean

Q: Returns on stocks X and Y are listed below: Period Stock X Stock Y 1 2 3 4 5 9% 6% 1% 8% -1% -2% 9%…

A: The returns on stocks  and  are listed below: Stock X9%6%1%8%-1%3%10%Stock Y-2%9%5%12%-1%6%5%Sample…

Q: A person conducting telephone surveys must get 3 more completed surveys before their job is…

A: There is 20% chance of completing the phone survey

Q: The scientific productivity of major world cities was the subject of a recent study. The study…

A: 15,3,3,30,3,10,20,21,19,4,5,19,8,30,10,4,15,15,13,19sample size(n)=20confidence level=99%

Q: A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed…

A: The amounts of mercury found in tuna sushi sampled at different stores in a city are given…

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 56…

A:

Q: Which type of confidence interval should you use in this situation? A sample of 25 different payroll…

A: Sample size (n) = 25 payroll departmentsSample mean (x¯) = 310.3 daysSample standard deviation (s) =…

Q: A population has a mean μ = 77 and a standard deviation σ = 22. Find the mean and standard deviation…

A: Mean()=77standard deviation()=22sample size(n)=264

Q: You are given the following information for a fitted GLM: Response variable Response distribution…

A: From the given table,response variable is Claim countLink is log.Therefore, the GLM model is,

Q: Pulmonary Disease. Suppose a 1980 study was conducted whose purpose was to compare the indoor air…

A: The question is about hypothesis testing.Given :No. of work areas where smoking was permitted ( n1 )…

Q: What would the 95% confidence limits for a sample that included 325 individuals with a mean of 8 and…

A: It is given that Sample mean = 8Sample std. deviation = 0.63Sample size = 325Confidence level = 95%

Q: Let z be a standard normal random variable with mean ? = 0 and standard deviation ? = 1. Use Table 3…

A: We have given thatMean( = 0Standard deviations () = 1