Homework Answers
Solution :
All the answers are correct .
P-value < alpha >> Reject the null hypothesis
If two tailed test : 2 * P-value
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The p-value for a Hypothesis Test of a mean or proportion o Is compared with alpha...
Question 4 3 pts The p-value for a Hypothesis Test of a mean or proportion Is...
Question 4 3 pts The p-value for a Hypothesis Test of a mean or proportion Is compared with alpha to make a conclusion in a hypothesis test All the answers are correct Is twice as large if it is a two-tailed test Is based on the probability of the test statistic on out in the relevant tail(s) of the distribution
Question 8 3 pts The p-value for a Hypothesis Test of a mean or proportion O All the answers are correct Is based on th...
Question 8 3 pts The p-value for a Hypothesis Test of a mean or proportion O All the answers are correct Is based on the probability of the test statistic on out in the relevant tail(s) of the distribution Is twice as large if it is a two-tailed test O is compared with alpha to make a conclusion in a hypothesis test Question 11 3 pts For this problem it would be helpful to have a standard normal table. What...
Question 4 3 pts The Critical Value changes as we move from a two-tailed hypothes is...
Question 4 3 pts The Critical Value changes as we move from a two-tailed hypothes is test to a one-tailed test True False Question 5 3 pts In reference to a Confidence Interval, which are true All the answers are correct The larger the level of alpha, the smaller the Bound of Error (BOE) The larger the level of alpha, the larger the Confidence Coefficient The larger the level of alpha, the larger the standard deviation Question 8 3 pts...
Small Sample Mean Problem. Each year the Heritage Foundation creates an Index of Economic Freedom for...
Small Sample Mean Problem. Each year the Heritage Foundation creates an Index of Economic Freedom for countries around the word based on assessments of freedom on property rights, corruption, business freedom, and labor freedom, among many others. We have a sample of 31 countries taken from the 2016 data. The following is a summary of this sample. Economic Freedom STEM Leaf 4 4* 64 5 09 18 22 24 32 42 5*160 65 74 75 76 77 91 93 6...
You conduct a hypothesis test about a population proportion p at a significance level of a...
You conduct a hypothesis test about a population proportion p at a significance level of a = .01 using a random sample of size n = 38. Your test statistic follows a standard normal distribution when the null hypothesis is true as an equality, and its value obtained from the sample is z = -2.75. Use the Distributions tool to help you answer the questions that follow. Select a Distribution Distributions 0 1 2 3 If you perform a lower...
A hypothesis test is conducted to test the null hypothesis that the mean is less than...
A hypothesis test is conducted to test the null hypothesis that the mean is less than 12. Use a 0.01 level of significance. What type of test is this? Right tail Two tail Left tail What is the critical value? 2.33 -2.33 1.78 correct answer is not given Suppose the test statistic was -2.50 What is the conclusion? Fail to reject Ho. There is not sufficent evidence to support the claim that the mean is less than 12. Reject Ho....
1. Find the P-value for the indicated hypothesis test with the given standardized test statistic, z....
1. Find the P-value for the indicated hypothesis test with the given standardized test statistic, z. Decide whether to reject Upper H 0 for the given level of significance alpha. Two-tailed test with test statistic z= -1.95 and alpha=0.04 P-value= ? (Round to four decimal places as needed.) Reject H0 or fail to reject? 2. Find the critical value(s) for a left-tailed z-test with alpha=0.01. Include a graph with your answer. The critical value(s) is(are) ___ (Round to two...
Test the Hypotheses Below Null Hypothesis: Mean Student Debt in 2011 is equal to Mean Student...
Test the Hypotheses Below Null Hypothesis: Mean Student Debt in 2011 is equal to Mean Student Debt in 2007 Alternative Hypothesis: Mean Student Debt in 2011 is not equal to Mean Student Debt in 2007 Alpha Level = 0.05 F-Test Two-Sample for Variances Variable 1 Variable 2 Mean 3925.76 2876.82 Variance 222129.8188 140278.3547 Observations 50 50 df 49 49 F 1.583493186 P(F<=f) one-tail 0.055512364 F Critical one-tail 1.607289463 Run an F-test for two sample variances using an alpha level of...
Explain what a P-value is. What is the criterion for rejecting the null hypothesis using the...
Explain what a P-value is. What is the criterion for rejecting the null hypothesis using the P-value approach? Explain what a P-value is. Choose the correct answer below. OA. A P-value is the probability of observing a sample statistic as extreme or more extreme than the one observed under the assumption that the statement in the null hypothesis is true B. A P-value is the number of standard deviations that the observed proportion is from the proportion stated in the...
Question 6 (1 point) In JMP, to conduct a Hypothesis Test about one proportion using a...
Question 6 (1 point) In JMP, to conduct a Hypothesis Test about one proportion using a Z-test Use Analyze > Distribution. Then select the variable and then at the red triangle, select Test Probabilities and enter the hypothesized value in the dialogue box. Go to Add Ins. Select Hypothesis Test for One Proportion from the list, select Raw or Summarized data, pick the column that contains the variable and then type in the value associated with success EXACTLY the way...
Question 4 3 pts The p-value for a Hypothesis Test of a mean or proportion Is compared with alpha to make a conclusion in a hypothesis test All the answers are correct Is twice as large if it is a two-tailed test Is based on the probability of the test statistic on out in the relevant tail(s) of the distribution
Question 8 3 pts The p-value for a Hypothesis Test of a mean or proportion O All the answers are correct Is based on the probability of the test statistic on out in the relevant tail(s) of the distribution Is twice as large if it is a two-tailed test O is compared with alpha to make a conclusion in a hypothesis test Question 11 3 pts For this problem it would be helpful to have a standard normal table. What...
Question 4 3 pts The Critical Value changes as we move from a two-tailed hypothes is test to a one-tailed test True False Question 5 3 pts In reference to a Confidence Interval, which are true All the answers are correct The larger the level of alpha, the smaller the Bound of Error (BOE) The larger the level of alpha, the larger the Confidence Coefficient The larger the level of alpha, the larger the standard deviation Question 8 3 pts...
Small Sample Mean Problem. Each year the Heritage Foundation creates an Index of Economic Freedom for countries around the word based on assessments of freedom on property rights, corruption, business freedom, and labor freedom, among many others. We have a sample of 31 countries taken from the 2016 data. The following is a summary of this sample. Economic Freedom STEM Leaf 4 4* 64 5 09 18 22 24 32 42 5*160 65 74 75 76 77 91 93 6...
You conduct a hypothesis test about a population proportion p at a significance level of a = .01 using a random sample of size n = 38. Your test statistic follows a standard normal distribution when the null hypothesis is true as an equality, and its value obtained from the sample is z = -2.75. Use the Distributions tool to help you answer the questions that follow. Select a Distribution Distributions 0 1 2 3 If you perform a lower...
Explain what a P-value is. What is the criterion for rejecting the null hypothesis using the P-value approach? Explain what a P-value is. Choose the correct answer below. OA. A P-value is the probability of observing a sample statistic as extreme or more extreme than the one observed under the assumption that the statement in the null hypothesis is true B. A P-value is the number of standard deviations that the observed proportion is from the proportion stated in the...
Question 6 (1 point) In JMP, to conduct a Hypothesis Test about one proportion using a Z-test Use Analyze > Distribution. Then select the variable and then at the red triangle, select Test Probabilities and enter the hypothesized value in the dialogue box. Go to Add Ins. Select Hypothesis Test for One Proportion from the list, select Raw or Summarized data, pick the column that contains the variable and then type in the value associated with success EXACTLY the way...
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