Suppose we want to test the null hypothesis Ho: p1 - P2 = 0 against the alternativehypothesis H1 : p1 - P2 # 0 at the 5% level of significance. Suppose also thatP10.8, п1500, р>0.75, п, — 400.What are the critical values for this test?Select one:а.-1.793 and 1.793O b. -1.6449 and 1.6449-2.5490 and 2.5490O d. -1.96 and 1.96

Answered: Suppose we want to test the null…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose you want to test the claim that u, #H2. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of a = 0.05, when should you reject Ho? n, = 50, n2 = 60, x, = 29, x2 = 27, o, = 1.5, o2 = 1.9 O A. Reject H, if the standardized test statistic is less than - 1.96 or greater than 1.96. O B. Reject H, if the standardized test statistic is less than - 2.33 or greater than 2.33. O C. Reject H, if the standardized test statistic is less than -2.575 or greater than 2.575. O D. Reject H, if the standardized test statistic is less than - 1.645 or greater than 1.645.
Previously, 3% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician believes that the percentage of mothers who smoke 21 cigarettes or more is less than 3% today. She randomly selects 145 pregnant mothers and finds that 3 of them smoked 21 or more cigarettes during pregnancy. Test the researcher's statement at the a = 0.1 level of significance. What are the null and alternative hypotheses? Ho: versus H,: (Type integers or decimals. Do not round.)
You are conducting a study to see if the proportion of voters who prefer Candidate A is significantly different from 61% at a significance level of αα = 0.025. According to your sample, 32 out of 54 potential voters prefer Candidate A. For this study, we should use Select an answer 2-SampTTest 2-PropZInt χ²GOF-Test 1-PropZTest T-Test 2-SampTInt 2-PropZTest χ²-Test 1-PropZInt ANOVA TInterval The null and alternative hypotheses would be: H0H0: ? p μ Select an answer > < = ≠ (please enter a decimal) H1H1: ? μ p Select an answer < > = ≠ (Please enter a decimal) The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is Select an answer less than (or equal to) greater than αα Based on this, we should Select an answer accept reject fail to reject the null hypothesis. As such, the final conclusion is that ... The sample data suggest t
find the p-value for the hypothesis test with the standard test statistic z. decide whether to reject H0 for the level of significanceα 14. Left-tailed test (z=-1.55, α=0.05) 16. Right-tailed test (z=1.23, α=0.10) 18. Two-tailed test (z=1.95, α=0.08)
K Previously, 6.6% of workers had a travel time to work of more than 60 minutes. An urban economist believes that the percentage has increased since then. She randomly selects 55 workers and finds that 10 of them have a travel time to work that is more than 60 minutes. Test the economist's belief at the x = 0.1 level of significance. What are the null and alternative hypotheses? Ho: ▼ versus H₁: (Type integers or decimals. Do not round.) Because npo (1-Po) (Round to one decimal place as needed.) Find the P-value. = 10, the normal model P-value= (Round to three decimal places as needed.) Is there sufficient evidence to support the economist's belief? 00 be used to approximate the P-value. OA. Yes, do not reject the null hypothesis. There is sufficient evidence because the P-value is greater than α. OB. No, do not reject the null hypothesis. There is not sufficient evidence because the P-value is greater than α. C. Yes, reject the null hypothesis. There is sufficient evidence because the…
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