State null and alternative hypotheses. Report results of statistical test, i.e., significant or not? Use .05 2-tailed alpha level. what type of error might you be making? 1. 53,57,61,49,52,56, 58, 62, 51, 56 u=52 alpha .05, two tailed 2.
Q: Mean of sampling distribution of means Standard deviation of the sampling distribution of means
A: We have given that data 3 ,7, 11 , 15 Sample size n =4 I want to find standard deviation of the sam...
Q: Based on these estimates, what is the expected cost per pound of gypsum next yea
A:
Q: 25 items were placed on test and the test was terminated after a pre-assigned time to 20 hours from ...
A:
Q: As the Hispanic population in the United States has grown, businesses have tried to understand what ...
A: A) Two sample t test is a parametric test ,when we compare the two groups of means then we use the ...
Q: There are hundreds of apples on the trees so you randomly choose just 54 apples and set a mean weigh...
A: Given,sample size(n)=54mean(x¯)=80.38 gramsstnadard deviation(s)=7.02 gramsdegrees of freedom(df)=n-...
Q: What is the age distribution of patients who make office visits to a doctor or nurse? The following ...
A: Explain how this can be modeled as a binomial distribution with 8 trials, where success is visitor a...
Q: . The probability of selecting a red ball is:
A: Here use tree diagram
Q: i. If this year's demand is 17,500GWH, what should be the additional amount to plan against if the e...
A: Here given, Demand for electricity next year is projected to be one of the following quantities: 18,...
Q: If corn has a normally distributed yield with a mean of 120 bushels per acre and a standard deviatio...
A: Given that, E(X) =120 bushels pet acre Sigma=10 bushels We have to find the percentage of acres tha...
Q: A Nevada roulette wheel has 38 pockets. One is numbered 0, another is numbered 00, and the rest are ...
A: From the given information, A roulette wheel has 38 pockets. One is numbered 0, another is numbered ...
Q: Problem 1.2: If you randomly pick a number from the set (2, 4, 7, 8, 9, 15, 17, 18}, what is the pro...
A:
Q: Do you think it is reasonable to assume a statistically significant relationship between companies’ ...
A: Theoretical Question need explaination
Q: Frequency award was won Age (years) of Best Actress wien Cumulative 20-29 29 Freqpency wward was won...
A:
Q: After receiving complaints from his customers about the store being closed on Sundays, a storekeeper...
A:
Q: What is the z* critical value for constructing a 94% confidence interval for a proportion? Find the...
A:
Q: SOCI 2004: Introduction to Population 1. Given the data in Table 1 for Jamaica 1980-1985 and 2000-20...
A: Population 1980-85 2000-2005 Beginning 2123400 2581700 End 2325700 2661000 Total Births 294900...
Q: 8. Donovan was skeptical before the coin toss at the playolf game, because his teams are generally u...
A: Given that, Donovan was skeptical before the coin toss at the playoff game, because his teams are ge...
Q: 26. The following table represents the number of boys and girls who chose the five possible answers ...
A:
Q: What is the probability that the student got an A grade or is Female? i. Given that the student is ...
A: We have given that the information in cross tabulation form. The total number of students = 150
Q: 1 2 If A = 4 2 find A2 – B2. 3 and B -1
A:
Q: Starting salaries of 105 college graduates who have taken a statistics course have a mean of $43,833...
A:
Q: What is the z* critical value for constructing a 99% confidence interval for a proportion? Find the...
A: We have given that, Confidence interval = 99% We will find the z* critical value at 99% confidence ...
Q: A list of 241 public colleges and universities in the States of Georgia (GA), South Carolina (SC), N...
A: A histogram is a pictorial representation of the distribution of the data. Each bar of a histogram r...
Q: Determine the possible permutations of the word MISSISSIPPI.
A: Given word is "MISSISSIPPI"Total no. of letter in word =11
Q: In how many ways can 9 individuals be seated in a row of 9 chairs if two individuals wanted to be se...
A: Permutation is the method that used to measure the number of arrangement in the data set. In this me...
Q: How many ways can be made out of the letters in the word HONESTY taking four letters at a time?
A: Given : A word HONESTY
Q: Which of the following describes a Type Il error for the hypotheses?
A: The type II error is defined as accepting the null hypothesis when the alternative is true.
Q: Which test should be used to answer this? (Relevant output below) Shapiro-Wilk normality test data...
A: Test is that whether the average drying time of a certain brand of latex paint is less than 4.5.
Q: What is the probability of flipping a coin three times and getting the following: A tails and a t...
A:
Q: c. Using the formula for estimating sample size (n), what is the computed value in 2 decimal places?...
A: Here we have to find correct options for given questions like.. critical value sample size. Etc..
Q: Box 1 contains 2 red balls and 1 blue ball. Box 2 contains 3 blue balls and 5 red ball. A coin is to...
A: Let us define some events A : box 1 is selected. B : box 2 is selected. E : red ball is selected. Th...
Q: Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the me...
A:
Q: A manufacturer is trying to determine whether a new method for constructing skateboards is faster th...
A:
Q: Suppose you are going to Las Vegas to play Keno. Your favorite bet is a dollar on a single number. W...
A: Given information: When you win, they give you the dollar back and two dollars more. When you lose, ...
Q: 4.8 Twitter users and news, Part I: A poll conducted in 2013 found that 52% of U.S. adult Twitter us...
A:
Q: Consider the following estimated model: Sleep = 3840 – 0.16 totwork - 12 educ - 8.7 age + 0.13 age? ...
A: The provided equation is: Sleep=3840-0.16 totwork-12 edc-8.7 age+0.13 age2+88 maleSE = (235) ...
Q: The maker of a cell phone screen protector would like to estimate the proportion of customers who fi...
A: We have given that Sample size n =200 96% confidence interval. (0.15 ,0.28)
Q: View Policies Current Attempt in Progress Thirty percent of law students who sit for a bar exam pass...
A: Given data,p=30%=0.30n=15P(Atmost 4)=?
Q: Forecasting. Using X =20 and P = 5 as reference points, 1. Calculate a point forecast of future sale...
A: 1. Consider, the regression equation is, From the output, the regression equation is, Sales=17.6836...
Q: Given the following density function of the random variable X: f (x) = 4x(1– x)², 0 <x<1 = 0, otherw...
A: The probability density function gives the probability at each possible value of a continuous random...
Q: Calculate the proportion of the 100 samples that had at least five people own a dog. Round your answ...
A: Given : p= .5971 n= 100
Q: Assume that Z, V, and V, are independent ran and V2 ~ x²(9). Find the following: (a) P[V + V 0.611/...
A:
Q: Find PBiomedicalltemale which is ceadl "tihe or that the engimeer ?s biomedical enaineer is female."...
A: The data ia given by Machanical Electrical Biomedical Total Female 7 5 6 18 Male 2 3 7 12 ...
Q: In this exercise, test Ho:p 0.5 vs Ha:p> 0.5, with p = 0.55 for different sample sizes. In parts (a)...
A:
Q: 4. April and Marsha want to share a large bag of skittles. There are 500 skittles in the bag. There ...
A:
Q: Lecture(8.1): A research study was conducted that measured empathy after watching Sesame street f...
A: A research study was conducted that measured empathy after watching Sesame street for five days i...
Q: A) of 9 trials what is the expected number of guilty verdicts in japans? What is the expected number...
A: Innocent until proven guilty? In Japanese criminal trials about 95% of the defendants are found guil...
Q: Consider the following data below. AMOUNT OF FAMILY MONTHLY INCOME LIFE INSURANCE A $10 ...
A: Family Monthly income $ Amount of life insurance A 10 20 B 12 30 C 15 50 D 23 100 E 35 200...
Q: In a school band, 9 kids play string instruments, 10 kids play woodwind instruments, 7 kids play bra...
A: We have given that kids play string instruments = 9 kids play woodwind instruments = 10 kids pla...
Q: For the shopkeeper's sample, find and write with proper notation the population proportion and san W...
A: We have given that the information about to the proportion. The sample size is 78.
- State null and alternative hypotheses.
- Report results of statistical test, i.e., significant or not? Use .05 2-tailed alpha level.
- what type of error might you be making?
1. 53,57,61,49,52,56, 58, 62, 51, 56
u=52
alpha .05, two tailed
2.
Step by step
Solved in 2 steps
- What is meant by the sample space of an experiment?One-Way Airfares The average one-way airfare from Pittsburgh to Washington, D.C., is $236. A random sample of 20 one-way fares during a particular month had a mean of $210 with a standard deviation of $43. at a=0.02, is there sufficient evidence to conclude aa difference from the stated mean? Use the sample statistics to construct a 98% confidence interval for the true mean one-way airfare from Pittsburgh to Washington, D.C., and compare your interval to the results of the test. Do they suport or contract on another?Unoccupied seats on flights cause airlines to lose revenue. As an intern in the finance department for Skyline Airways, Rebecca is tasked with estimating the average number of unoccupied seats per flight over the past year. To accomplish this, the records of 231 flights are randomly selected and the number of unoccupied seats is noted for each of the sampled flights. The sample mean is 14.7 seats and the standard deviation is 3.4 seats.Construct a 90% confidence interval for the population mean number of unoccupied seats per flight during the past year.If necessary, round results to 1 decimal places.
- In a study of cell phone use and brain hemispheric dominance, an internet survey was e-mailed to 2458 subjects randomly selected from an online group involved with ears. 1127 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. A)Find the best point estimate of the population proportion p. (Round to three decimal places as needed) B) identify the value of the margin of error E. C) construct the confidence interval.Recent business graduates currently employed in full-time positions were surveyed. Family backgrounds were self-classified as relatively high or low socioeconomic status. For a random sample of 16 high-socioeconomic-status recent business graduates, the mean total compensation was $34,500 and the sample standard deviation was $8,520. For an independent random sample of 9 low-socioeconomic status recent business graduates, the mean total compensation was $31,499 and the sample standard deviation was $7,521. Find a 90% confidence interval for the difference between the two population means.