Test the hypotheses at significance level a = 0.10
Q: Use the t-distribution and the sample results to complete the test of the hypotheses.
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A: NOTE When p-value≤α=level of significance, then we reject the null hypothesis. When…
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A: The provided sample means are shown below: Xˉ1=578\bar X_1 = 578 Xˉ2=570\bar X_2 = 570 Also, the…
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A: Here, n=20. The degrees of freedom is, df=n-1 =20-1 =19
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A: Givenn2 = 30x2 = 75.2s2 = 11.9n1 = 34x1 =84.7s1 = 16.8
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Q: e. Find the critical value for 99% confidence level based on your computed sample size.
A: Given: Sample size n=20 Confidence level 99%
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A: Answer:- Here, null hypothesis is there is no increase in scores after the treatment. Null…
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A: The null and alternative hypothesis are: H0 : μ= 69 bpm H1 : μ< 69 bpm
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A: Given : p = 30% = 0.30 n = 500 x = 160
Q: what is the general alternative hypothesis for a two tailed independent samples t test
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A: Now, we need to test the null hypothesis at a=0.05 level of significance.
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Q: If we test the hypotheses below with a significance level of 0.05. Ho: µ = 20 HA :4 > 20 what will…
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A: To be reject null hypothesis, p value must be smaller than alpha.
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- Are freshmen psychology majors just as likely to change their major before they graduate compared to freshmen business majors? 361 of the 687 freshmen psychology majors from a recent study changed their major before they graduated and 435 of the 737 freshmen business majors changed their major before they graduated. What can be concluded at the & = 0.10 level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Hn: Select an answer v Select an answer v Select an answer v (please enter a decimal) H: Select an answer v Select an answer Select an answer v (Please enter a decimal) b. The test statistic ? v = (please show your answer to 3 decimal places.) c. The p-value = (Please show your answer to 4 decimal places.) d. The p-value is ? v a e. Based on this, we should Select an answer v the null hypothesis. f. Thus, the final conclusion is that ... O The results are statistically insignificant at a = 0.10, so there is insufficient…In a study published in a journal, occupational accidents at three construction sites in a country were monitored. The total numbers of accidents at the three randomly selected sites were 52,105,and 38. Summary statistics for these three sites are: x=65 and s=35.3. Suppose an occupational safety inspector claims that the average number of occupational accidents at all of the country's construction sites is less than 71. a. Set up the null and alternative hypotheses for the test. Choose the correct answer below. A. H0: μ=65 vs. Ha: μ<65 B. H0: μ≥71 vs. Ha: μ<71 C. H0: μ=71 vs. Ha: μ≠71 D. H0: μ=71 vs. Ha: μ>71 E. H0: μ=65 vs. Ha: μ≠65 F. H0: μ=71 vs. Ha: μ<71 Your answer is correct. Part 2 b. Find the rejection region for the test using α=0.05. Select the correct choice below and fill in the answer box(es) within your choice. (Round to two decimal places as needed.) A. t>enter…In a study published in a journal, occupational accidents at three construction sites in a country were monitored. The total numbers of accidents at the three randomly selected sites were 52, 105, and 38. Summary statistics for these three sites are: x=65 and s=35.3. Suppose an occupational safety inspector claims that the average number of occupational accidents at all of the country's construction sites is less than 71. a. Set up the null and alternative hypotheses for the test. Choose the correct answer below. A. H0: μ=65 vs. Ha: μ<65 B. H0: μ≥71 vs. Ha: μ<71 C. H0: μ=71 vs. Ha: μ≠71 D. H0: μ=71 vs. Ha: μ>71 E. H0: μ=65 vs. Ha: μ≠65 F. H0: μ=71 vs. Ha: μ<
- Are freshmen psychology majors more likely to change their major before they graduate compared to freshmen business majors? 432 of the 627 freshmen psychology majors from a recent study changed their major before they graduated and 459 of the 726 freshmen business majors changed their major before they graduated. What can be concluded at the X = 0.01 level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer H1: Select an answer Select an answer Select an answer b. The test statistic ? = c. The p-value = d. The p-value is ? ✔ α e. Based on this, we should f. Thus, the final conclusion is that ... Select an answer Select an answer (please enter a decimal) (Please enter a decimal) (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) Select an answer the null hypothesis. O The results are statistically significant at a = 0.01, so there is sufficient evidence to…If, in a one-tail hypothesis test where H0 is only rejected in the upper tail, the p-value=0.6792 and ZSTAT=−0.47,what is the statistical decision if the null hypothesis is tested at the 0.07 level of significance? What is the statistical decision? Since the p-value is Less than or Greater than or equal to a= , Reject , Do not reject H0.16% of all college students volunteer their time. Is the percentage of college students who are volunteers different for students receiving financial aid? Of the 398 randomly selected students who receive financial aid, 56 of them volunteered their time. What can be concluded at the a = 0.01 level of significance? a: For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? Select an answer (please enter a decimal) H₁: ? Select an answer ✓ (Please enter a decimal) c. The test statistic ?v= (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) d. The p-value =
