A poll showed the approval rating to be 0.45 (45%). A second poll based on 2000 randomly selected voters showed that 886 approved of the job the president was doing . Do the results of the second poll indicate that the proportion of voters who approve of the job the president is doing is significantly lower than the original level? Explain . Assume the x = 0.05 level of significance . Find the test statistic for the hypothesis test. z=

A poll showed the approval rating to be 0.45 (45%). A second poll based on 2000 randomly selected voters showed that 886 approved of the job the president was doing . Do the results of the second poll indicate that the proportion of voters who approve of the job the president is doing is significantly lower than the original level? Explain . Assume the x = 0.05 level of significance . Find the test statistic for the hypothesis test. z=

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Description: A poll showed the approval rating to be 0.45 (45%). A second poll based on 2000 randomly selected voters showed that 886 approved of the job the president was doing . Do the results of the second poll indicate that the proportion of voters who approv

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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Please help with the ast part of the problem. Conduct the hypothesis test and provide the test statistic and the critical value, and state the conclusion. A company claims that its packages of 100 candies are distributed with the following color percentages: 11% red, 22% orange, 12% yellow, 15% brown, 24% blue, and 16% green. Use the given sample data to test the claim that the color distribution is as claimed. Use a 0.025 significance level. Candy Counts Color Number in Package Red 13 Orange 26 Yellow 9 Brown 7 Blue 27 Green 18 The test statistic is 6.73 (Round to two decimal places as needed.) The critical value is 12.833 (Round to three decimal places as needed.) Please help with this part of the problem; State the conclusion. Reject or fail to reject H0. There is or is not sufficient evidence to warrant rejection of the claim that the color distribution is as…
Records show that students score an average of 850 points on an achievement test. A test prep company believe their students will have different scores. To test this hypothesis, they sample 1000 students and find a sample mean of 856 points. They perform the hypothesis test at a confidence level of 95%. a. State the null and alternative hypothesis mathematicallyb. What is the significance level? c. If 856 is a significantly significant score after being transformed into a z statistic, where will it lie in the distribution below? In area 1, area 2 or area 3?
A random sample of 872 births included 428 boys. Use a 0.05 significance level to test the claim that 51.1% of newborn babies are boys. Do the results support the belief that 51.1% of newborn babies are boys? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.511 H₁: p > 0.511 B. Ho: p=0.511 H₁: p<0.511 c. Ho: p=0.511 H₁: p0.511 O D. Ho: p0.511 H₁: p=0.511 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is - 1.19 (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.)
A random sample of 834 births included 434 boys. Use a 0.01 significance level to test the claim that 50.7% of newborn babies are boys. Do the results support the belief that 50.7% of newborn babies are boys? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho:p=0.507 H:p>0.507 O B. Ho: p=0.507 H1:p<0.507 O C. Ho:p 0.507 H: p=0.507 D. Ho: p=0.507 H1: p#0.507 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.)
A random sample of 844 births included 431 boys. Use a 0.10 significance level to test the claim that 50.5% of newborn babies are boys. Do the results support the belief that 50.5% of newborn babies are boys? Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. H0: p=0.505 H1: p<0.505 B. H0: p=0.505 H1: p≠0.505 Your answ C. H0: p≠0.505 H1: p=0.505 D. H0: p=0.505 H1: p>0.505 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is____ (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is___ (Round to three decimal places as needed. Identify the conclusion for this hypothesis test. A. Fail to reject H0. There is not sufficient evidence to warrant rejection of the claim that 50.5% of newborn babies are boys. B. Reject H0. There is not…
A random sample of 847 births included 434 boys. Use a 0.10 significance level to test the claim that 51.1% of newborn babies are boys. Do the results support the belief that 51.1% of newborn babies are boys? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.511 H :p>0.511 O B. Ho: p#0.511 H1:p=0.511 O C. Ho: p= 0.511 H1: p<0.511 O D. Ho: p=0.511 H1: p#0.511 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test.
A random sample of 855 births included 431 boys. Use a 0.05 significance level to test the claim that 51.5% of newborn babies are boys. Do the results support the belief that 51.5% of newborn babies are boys? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p= 0.515 H:p0.515 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Check Answer Clear All 3 barts remaining MacBook Pro F1O FII F12 F7 F8 F9 esc F2 F4 F5 F1 # $ & @ delet %3D 7 8 4 Q W E R Y tab F G H J K A S caps lock
A research article claims proportion of women who vote is different than 0.7. In a sample of 200 eligible women voters, 151 women actually voted. 1. At %6 significance level, test and conclude the hypothesis? 2. Calculate P-Value.
Identify the conclusion for this hypothesis test. O A. Fail to reject Ho. There is sufficient evidence to warrant rejection of the claim that 51.1% of newborn babies are boys. B. Reject Ho. There is sufficient evidence to warrant rejection of the claim that 51.1% of newborn babies are boys. O C. Fail to reject Ho. There is not sufficient evidence to warrant rejection of the claim that 51.1% of newborn babies are boys. D. Reject Ho. There is not sufficient evidence to warrant rejection of the claim that 51.1% of newborn babies are boys. Do the results support the belief that 51.1% of newborn babies are boys? O A. The results support the belief that 51.1% of newborn babies are boys because there was no evidence to show that the belief is untrue. O B. The results do not support the belief that 51.1% of newborn babies are boys because there was sufficient evidence to show that the belief is untrue. OC. The results support the belief that 51.1% of newborn babies are boys because there was…
use a hypothesis test to determine if the proportions are statistically different. A recent survey showed that in a sample of 100 elementary school teachers, 15 were single. In a sample of 180high school teachers, 36 were single. Is the proportion of high school teachers who were single greater than theproportion of elementary teachers who were single? Use ΅ = 0.01.
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If the level of significance in a hypothesis test is 1 %, what would the p-value have to be for failing to reject the null hypothesis? a. equal to 0.005 b. less than .01 c. greater than .01