In a sample of 50 men, 40 said that they had less leisure time today than they had 10 years ago. In a sample of 50 women, 30women said that they had less leisure time today than they had 10 years ago. At a=0.01, is there a difference in theproportions?Use p, for the proportion of men with less leisure time.Part: 0/6Part 1 of 6State the hypotheses and identify the claim with the correct hypothesis.(Choose one)(Choose one)HThis hypothesis test is a (Choose one) test.山四

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Answered: In a sample of 50 men, 40 said that…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Suppose are running a study/poll about the proportion of women over 40 who regularly have mammograms. You randomly sample 117 people and find that 92 of them match the condition you are testing.Suppose you are have the following null and alternative hypotheses for a test you are running:H0:p=0.83Ha:p<0.83Calculate the test statistic, rounded to 3 decimal places z=z=
4Need help please parts B, C, D
The average amount of time it takes for couples to further communicate with each other after their first date has ended is 2.35 days. Is this average different for blind dates? A researcher interviewed 70 couples who had recently been on blind dates and found that they averaged 2.5 days to communicate with each other after the date was over. Their standard devlation was 0.655 days. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v Select an answerv H: ?vSelect an answerv c. The test statistic ?v (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ?v a f. Based on this, we should Select an answerv the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest that the population mean is not significantly different from 2.35 at a = 0.10, so there is statistically…
Solve both parts of the question...
You are a process engineer for a company that manufactures widgets. A particular machine at your company has some downtime during the day on 36.5% of days. You decided to make some changes to how the machine is calibrated in an attempt to reduce downtime. 63 days after your changes were implemented, you find that the machine had some downtime during the day on 31.0% of days. Conduct a hypothesis test to determine if the proportion of days that the machine has downtime has decreased from before, with a= 0.1. * Using this information, what is the p in your analysis? Note: 1- Only round your final answer. Enter your final answer with 2 decimal places.
An airline claims that the no-show rate for passengers is less than 5%. In a sample of 420 randomly selected reservations, 19 were no-shows. At =0.01, test the airlines claim.
Consider a series of Euchre games played between two teams: Team A and Team B. After 4040 games, Team A has won 1616 times and Team B has won 2424 times. Can we conclude that one team is better than the other? Clearly state the null and alternative hypotheses.Let pp be the proportion of times Team B will beat Team A. Calculate the test statistic and pp-value.Round your answer for the test statistic to two decimal places, and your answer for the pp-value to three decimal places.test statistic == pp-value == Can we conclude that one team is better than the other? Yes No
Life on Other Planets Forty-five percent of people believe that there is life on other planets in the universe. A scientist does not agree with this finding. He surveyed 110 randomly selected individuals and found 66 believed that there is life on other planets. At α=0.05, is there sufficient evidence to conclude that the percentage differs from 45? Use the P-value method with a graphing calculator. State the hypotheses and identify the claim with the correct hypothesis. H0 : p=0.45 ▼not claim H1 : p≠0.45 ▼claim This hypothesis test is a ▼two-tailed test. Find the P-value. Round the answer to four decimal places. P-value = ___________________
How hard is it to reach a businessperson by phone? Let p be the proportion of calls to businesspeople for which the caller reaches the person being called on the fist try. If you have no preliminary estimate for p, how many business phone calls should you include in a random sample to be 80% sure that the point estimate p will be within a distance of 0.04 from p? A report states that business people can be reached by a single phone call approximately 22% of the time. Using the national estimate for p
A humane society claims that less than 62% of households in a certain country own a pet. In a random sample of 500 households in that country, 290 say they own a pet. At a = 0.05, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state Ho and H Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. Less than % of households in the country own a pet. O B. % of households in the country own a pet. O C. The percentage households in the country that own a pet is not %. O D. More than % of households in the country own a pet. Let p be the population proportion of successes, where a success is a household in the country that owns a pet. State Ho and H.. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) CO A. Hnipz O B. Hnip= OC.…
A survey claims that 8 out of 10 Filipino nurses use soap "clean" for handwashing. To verify this claim, a random sample of 100 Filipino nurses is obtained. Out of these 100 nurses, 58 said that they use soap X for handwashing. Test if the claim is accurate. The level of significance is set at 0.05. Ho: The proportion Filipino n v What are the appropriate null and alternative hypotheses for this problem? ( Select ) v What is the appropriate test statistic to be used for this problem? a. z=(p-P)/V(PQ/n) b. t=(7-u)/(s/Vn) C. z=-u)/(a/Vn) d. 7tt s/Vn ( Select ) What is the critical region? ( Select ) If the computed test statistics is -8.5, what is the appropriate conclusion for this problem?
In a random sample of 1000 students, pˆ = 0.70 (or 70%) were in favor of longer hours at the school library. The standard error of pˆ (the sample proportion) is A.0.1601 B.0.0126 C.0.0145 D. 0.8000

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