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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A humane society claims that less than 64% of households in a certain country own a pet. In a random sample of 400 households in that country, 244 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 Ha 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.) A. The percentage households in the country that own a pet is not %. OB. Less than % of households in the country own a pet. O C. % of households in the country own a pet. OD. 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 H₂ Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) OA. Ho-p² Ha p OE. Ho P= Ha: p=…
D Country Financial, a financial services company, uses surveys of adults age 18 and older to determine whether personal financial fitness changing over time. A recent sample of 1000 adults showed 410 indicating that their financial security was more than fair. Just a year prior, a sample of 900 adults showed 315 indicating that their financial security was more than fair. a. State the hypotheses that can be used to test for a significant difference between the population proportions for the two years. Ho : P1 – p2- Select your answer - Ha : Pi - P2 - Select your answer - b. Conduct the hypothesis test and compute the p-value. Round your answer to four decimal places. p-value = %3D At a = 0.05 level of significance, what is your conclusion? I. Reject Ho. There is not sufficient evidence to conclude that the population proportions are not equal. The data do not suggest that there has been a change in the population proportion saying that their financial security is more than fair. II.…
A humane society claims that less than 68% of households in a certain country own a pet. In a random sample of 500 households in that country, 330 say they own a pet. At a = 0.01, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (Kound to two decimal places as needed.) OA. Ho P Ha: p² OD. Ho p Ha: p= OB. Ho: p2 Ha p Z= (Round to two decimal places as needed.) Identify the P-value. P=0 (Round to three decimal places as needed.). the null hypothesis. There OC. Ho: P Ha: p enough evidence to OF. Ho P > (c) Decide whether to reject or fail to reject the null hypothesis and (d) interpret the decision in the context of the original claim. Ha: ps the society's claim. Next
In a sample of 57 men, 35 said that they had less leisure time today than they had 10 years ago. In a sample of 57 women, 43 women said that they had less leisure time today than they had 10 years ago. At a=0.10, is there a difference in the proportions? Use p₁ for the proportion of men with less leisure time. Part: 0/6 Part 1 of 6 State the hypotheses and identify the claim with the correct hypothesis. Ho: (Choose one) ▼ H₁: (Choose one) ▼ This hypothesis test is a (Choose one) ▼ test. O0 P1 0=0 5 #3
An education researcher claims that 57% of college students work year-round. In a random sample of 600 college students, 342 say they work year-round. At a = 0.05, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Ho and H3. 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.) OA. % of college students work year-round. O B. At most % of college students work year-round. O C. The percentage of college students who work year-round is not O D. At least % of college students work year-round. Let p be the population proportion of successes, where a success is a college student who works year-round. State H, and Ha. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Ho: p> O B. Ho: ps O C. Ho: p= Ha: ps Hại p> H3:p = O D.…
Suppose data shows that only 50% of breast cancer patients can survive more than 5 years. You suspect the percentage is too low, so you'd like to conduct a study to examine this situation. What is the null and alternative hypothesis in this situation?
A humane society claims that less than 73% of households in a certain country own a pet. In a random sample of 800 households in that country, 568 say they own a pet. At a = 0.01, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state Ho and Ha. 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. The percentage households in the country that own a pet is not O B. % of households in the country own a pet. C. Less than 73 % of households in the country own a pet. 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 Ha. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O C. Ho: p Ha:p2 Haip=…
A medical researcher wishes to try three different techniques to lower cholesterol levels of patients with high cholesterol levels. The subjects are randomly selected and assigned to one of three groups. Group 1 is given medication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of six weeks, each subject's cholesterol level is recorded. Test the hypothesis that there is no difference among the means. Use a= 0.05
A humane society claims that less than 67% of households in a certain country own a pet. In a random sample of 600 households in that country, 384 say they own a pet. At a = 0.01, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state Ho and Ha. 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. More 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. Less 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 Ha. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Ho: p= O B. O C. Ho:p…
Based on information from a previous study, r1 = 34 people out of a random sample of n1 = 105 adult Americans who did not attend college believe in extraterrestrials. However, out of a random sample of n2 = 105 adult Americans who did attend college, r2 = 50 claim that they believe in extraterrestrials. Does this indicate that the proportion of people who attended college and who believe in extraterrestrials is higher than the proportion who did not attend college? Use ? = 0.01. (a) What is the level of significance?State the null and alternate hypotheses. H0: p1 = p2; H1: p1 ≠ p2H0: p1 < p2; H1: p1 = p2 H0: p1 = p2; H1: p1 < p2H0: p1 = p2; H1: p1 > p2 (b) What sampling distribution will you use? What assumptions are you making? The Student's t. The number of trials is sufficiently large.The standard normal. We assume the population distributions are approximately normal. The standard normal. The number of trials is sufficiently large.The Student's t. We assume the…
When we test the hypothesis that the population proportions are equal, we can use the Z test for a one-sided as well as a two-sided alternative. Select one: a. False b. True C. Not sure
A decade-old study found that the proportion of high school who felt that ‘getting rich was an important personal goal was 75%. Suppose that we have reason to believe that this proportion has changed., and we wish to carry out a hypothesis test to see if our belief can be supported. State the thanks hypothesis H0 and the alternative H1 that we would use for this test.

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