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Can someone write the answers and explain if in both the z
statistic and the 95%...
1.You are performing a left-tailed z-test If α=.005α=.005, and your test statistic is z=−2.59, do you:...
1.You are performing a left-tailed z-test If α=.005α=.005, and your test statistic is z=−2.59, do you: Reject Null Hypothesis Fail to Reject Null Hypothesis You are performing a left-tailed z-test If α=.10, and your test statistic isz=-2.01, do you: Reject Null Hypothesis Fail to Reject Null Hypothesis You are performing a right-tailed t-test with a sample size of 15 If α=.01, and your test statistic is t=3.02t=3.02, do you: Reject Null Hypothesis Fail to Reject Null Hypothesis You are performing...
19. Given a test statistic: Zc 2 and the known Z-values for common confidence intervals: 1.645,...
19. Given a test statistic: Zc 2 and the known Z-values for common confidence intervals: 1.645, 1.96, and 2.576 for the 90%, 95% and 99 % confidence levels respectively. Can you reject the null hypothesis at the 95% confidence level? Be sure to define and discuss the test statistic and Z-values in your answer.
1.) Use the given information to find the P-value. Also, use a 0.05 significance level and...
1.) Use the given information to find the P-value. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis). The test statistic in a two-tailed test is z = 1.95. Group of answer choices 0.0256; reject the null hypothesis 0.9744; fail to reject the null hypothesis 0.0512; reject the null hypothesis 0.0512; fail to reject the null hypothesis 2.) Use the confidence level and sample...
show work for answers please 1.1 . +1.06 and 106 If the score for me The...
show work for answers please
1.1 . +1.06 and 106 If the score for me The critical boundaries for a hypothesis testare -1.90, then what is the correct statistical decision? a Fail to reject H (b) Fail to reject H. c. Reject H d. Reject Ho. 9. If two samples are selected from the same population, under what circumstances will the two samples have exactly the same t statistic? a. If the sample size (n) is the same for both...
26. In a random sample of 95 college students, 40 wished they would have chosen a...
26. In a random sample of 95 college students, 40 wished they would have chosen a different major. Use the following steps to construct a 95% confidence interval for the true proportion of all students who wished they would have chosen a different major. a. Find the number of sample values, n b. Find the sample proportion, B c. Find the critical z-score, 2/2 d. When calculated correctly, E = 0.0993. Construct a confidence interval for the population proportion, p....
1. Regarding a two-tailed z-test with an alpha of 0.05, we would need a Zobt with...
1. Regarding a two-tailed z-test with an alpha of 0.05, we would need a Zobt with an absolute value less than 1.96 in order to reject the null hypothesis. True or False? 2. What happens to the probability of committing a Type I error if the level of significance is changed from α = 0.05 to α = 0.01? A. It increases B. It decreases C. It stays the same D. Cannot determine 3. Given a Zobt of -1.99 ,...
_ 9) In a sample of 10 randomly selected women, it was found that their mean height was 634 inches. From previous...
_ 9) In a sample of 10 randomly selected women, it was found that their mean height was 634 inches. From previous studies, it is assumed that the standard deviation, , 124 inches and that the population of height measurements is normally distributed a) Construct the confidence interval for the population mean height of women b) If the sample size was doubled to 20 women, what will be the effect on the confidence interval? 10) 10) The numbers of advertisements...
il Boost 7:50 PM Exit Find the value of the test statistic z using z =...
il Boost 7:50 PM Exit Find the value of the test statistic z using z = -2 Vn P9 The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n = 696 drowning deaths of children with 30% of them attributable to beaches. O 3.05 0 -2.88 0 -3.05 O 2.88 Il Boost 7:50 PM Exit Use the given information to find the P-value. Also, use a...
Read the z statistic from the normal distribution table and circle the correct answer. A one-tailed...
Read the z statistic from the normal distribution table and circle the correct answer. A one-tailed test (upper tail) at a 123 level of significance, a. 1.645 b. 1.54 C. 1.96 O d. 1.16 When the hypotheses Ho μ z 100 and Ha μ < 100 are being tested at a level of significance of o, the null hypothesis will be rejected if the test statistic z is a. -za O c. 100 For a one-tailed test (upper tail) with...
I. Matching Write your answers in the blanks provided. (2 pt. each) 8. The symbol used...
I. Matching Write your answers in the blanks provided. (2 pt. each) 8. The symbol used in the alternate hypothesis to indicate it is a two-tailed test. ___________ 9. Every null hypothesis is written with what type of equality or inequality symbol? __________ 10. In hypothesis testing, the level of significance α describes the probability of making a ____________ error. __________ 11. In hypothesis testing, if the P-value < α , _____________ the null hypothesis. __________ 12. In hypothesis testing,...
19. Given a test statistic: Zc 2 and the known Z-values for common confidence intervals: 1.645, 1.96, and 2.576 for the 90%, 95% and 99 % confidence levels respectively. Can you reject the null hypothesis at the 95% confidence level? Be sure to define and discuss the test statistic and Z-values in your answer.
show work for answers please
1.1 . +1.06 and 106 If the score for me The critical boundaries for a hypothesis testare -1.90, then what is the correct statistical decision? a Fail to reject H (b) Fail to reject H. c. Reject H d. Reject Ho. 9. If two samples are selected from the same population, under what circumstances will the two samples have exactly the same t statistic? a. If the sample size (n) is the same for both...
26. In a random sample of 95 college students, 40 wished they would have chosen a different major. Use the following steps to construct a 95% confidence interval for the true proportion of all students who wished they would have chosen a different major. a. Find the number of sample values, n b. Find the sample proportion, B c. Find the critical z-score, 2/2 d. When calculated correctly, E = 0.0993. Construct a confidence interval for the population proportion, p....
_ 9) In a sample of 10 randomly selected women, it was found that their mean height was 634 inches. From previous studies, it is assumed that the standard deviation, , 124 inches and that the population of height measurements is normally distributed a) Construct the confidence interval for the population mean height of women b) If the sample size was doubled to 20 women, what will be the effect on the confidence interval? 10) 10) The numbers of advertisements...
il Boost 7:50 PM Exit Find the value of the test statistic z using z = -2 Vn P9 The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n = 696 drowning deaths of children with 30% of them attributable to beaches. O 3.05 0 -2.88 0 -3.05 O 2.88 Il Boost 7:50 PM Exit Use the given information to find the P-value. Also, use a...
Read the z statistic from the normal distribution table and circle the correct answer. A one-tailed test (upper tail) at a 123 level of significance, a. 1.645 b. 1.54 C. 1.96 O d. 1.16 When the hypotheses Ho μ z 100 and Ha μ < 100 are being tested at a level of significance of o, the null hypothesis will be rejected if the test statistic z is a. -za O c. 100 For a one-tailed test (upper tail) with...
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