Assume that a simple random sample has been selected from a normally distributed population and test the given claim. A researcher wants to test the claim that convicted burglars spend an average of 18.7 months in jail. She takes a random sample of 11 such cases from court files and finds that x = 21.3 months and s = 5.7 months. Test the claim at the 0.05 significance level. State the claim in words: Convicted Burglars spend an average of 18.7 months in jail. Ho μ = 18.7 H1 μ ≠ 18.7 What calculator function is needed?  p value = __________  Since p ________ α, ________________________ the null hypothesis.  Final conclusion:

Q: An employee claims that 20% of the email she receives is personal, 60% is work related, and 20% is…

A: Given data An employee claims that 20% of the email she receives is personal 60% is work related and…

Q: OA. Ho:p=0.29 H:p>0.29 OB. Ho: p=0.29 H;:p#0.29 OC. Ho: p=0.29 H:p<0.29 OD. Ho: p#0.29 H:p=0.29…

A: Here , we are testing whether the percentage of blue candies is equal to 29% This would be a two…

Q: A study, which randomly surveyed 3,700 households and drew on this information from the IRS, found…

A: A​ study, which randomly surveyed 3,700 households and drew on this information from the​ IRS, found…

Q: A state's Division of Motor Vehicles (DMV) claims that 60% of all teens pass their driving test on…

A: Given that: Population proportion, p=0.60 Sample size, n=125 Number of successes, x=86

Q: A statistics student believes that black cars are less likely to receive tickets for moving…

A: It is given that the P-value is 0.24.

Q: The mean score on a widely freshman history examination is 75. A history teacher at a very large…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: The table below summarizes data from a survey of a sample of women. Using a 0.01 significance​…

A: The following information has been provided:   Man Woman Total Women who agree 499 344 843…

Q: In a random sample of males, it was found that 25 write with their left hands and 225 do not. In a…

A: Given that In a random sample of males, it was found that 25 write with their left hands and 225 do…

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: GivenMean(x)=63.4standard deviation(s)=15.1sample size(n)=25α=0.025

Q: Travelers who have no intention of showing up often fail to cancel their hotel reservations in a…

A:

Q: re are from medicines manufactured in the United States. Assume that a simple random sample has been…

A: Population mean μ =14 Sample size n =10

Q: To test the fairness of law enforcement in its area, a local citizens' group wants to know whether…

A: Here We have write the null and alternative hypothesis

Q: To test the fairness of law enforcement in its area, a local citizens' group wants to know whether…

A:

Q: A recent national report states the marital status distribution of the male population age 18 or…

A: Given:

Q: The table below summarizes data from a survey of a sample of women. Using a 0.01 significance​…

A: a. It is needed to test whether the proportions of​ agree/disagree responses are the same for…

Q: Report the test statistic. Round your answer to TWO decimal places.  You may use the observed…

A: It is given that  Favourable cases, x = 777 Sample size, n = 2101 Population proportion, p = 34.5% =…

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: sample size(n)=16Mean()=45.3standard deviation(s)=7.9significance level()=0.05

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: The objective of this question is to test the claim of a customer that it takes more than 40 minutes…

Q: A car leasing firm's records indicate that the mean number of miles driven annually in its cars has…

A: GivenA car leasing firm's records indicate that the mean number of miles driven annually in its cars…

Q: The table below summarizes data from a survey of a sample of women. Using a 0.01 significance​…

A: The objective is to test the claim that the proportions of​ agree/disagree responses are the same…

Q: In a 2013 poll, it was found that 0.78 of Americans cover their mouth when sneezing. A sociologist…

A: The question is about hypothesis testing.Given :Population proportion of people from country "A"…

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A:

Q: Suppose we want to know whether the mean length of unemployment differs among the residents of two…

A: Given, Suppose we want to know whether the mean length of unemployment differs among the residents…

Q: To test the fairness of law enforcement in its area, a local citizens’ group wants to know whether…

A: The significance level, α=0.02 The given data is,   Ticketed Not Ticketed Men 19 74 Women 11…

Q: The genders from 100 births at a certain hospital are provided, where 1 = boy and 0 = girl. Use a…

A: The test is to check whether the sequence, from left or right and then top to bottom, is random.

Q: In a random sample of soldiers who fought in the Battle of Preston, 774 soldiers were from the New…

A: The hypotheses are given below: Null hypothesis: H0:p=0.25 Alternative hypothesis: H1:p&gt;0.25 The…

Q: We are interested in testing whether the proportion of American adults who mostly drink diet soda…

A: X=485, n=2027, level of significance ɑ=0.05 ,p=25%

Q: The amount of sodium (in milligrams) in one serving for a random sample of three different kinds of…

A: The objective of this question is to determine if there is a significant difference in the mean…

Q: In a random sample of 315 people 90 of them were smokers. Based on the above sample test whether the…

A:

Q: Travelers who have no intention of showing up often fail to cancel their hotel reservations in a…

A: Given: n = 10 Formula Used: Mean X = ∑Xin Sample Standard deviation S = ∑Xi-X2n-1

Q: A simple random sample of size n= 200 drivers with a valid driver's license is asked if they drive…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: a)    Compute s^2

A: x (x-xbar)^2 18 2.25 16 0.25 16 0.25 16 0.25 14 6.25 18 2.25 16 0.25 18 2.25 14…

Q: Suppose that in a random selection of 100 colored candies, 29% of them are blue. The candy company…

A: The information provided in the question are as follows :- Sample size (n) = 100 The sample…

Q: One cable company claims that it has excellent customer service. In fact, the company advertises…

A: Formula :

Q: Independent random samples were selected from population 1 and population 2. The following…

A: Use the independent two sample t test

Q: Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship…

A: Mr. Whinney gathered the following sample information;

Q: The sales manager of a food company wants to determine if the weekly sales of 16 ounce packages of…

A: Population mean μ = 2400Sample size n = 400Sample mean x¯ = 2430Sample standard deviation s =…

Q: A poll in one country indicated that 48​% favor imposing the death penalty​ (the country currently…

A: Sample Size:The formula for the sample size is as follows:

Q: To test the fairness of law enforcement in its area, a local citizens’ group wants to know whether…

A: Answer  Sample size [n1] =28+152 =180 sample size [n2] =20+200 =220 X1 =28 x2=20 sample proportion1…

Q: Calculate the P-value for a sample of 40 observations with a sample proportion of 0.6 if the null…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.