thenIf the value of test statistic for a hypothesis test fall into the critical region for some a levelA. p-value < aB. p-value > aC. p-value < Zα/2D. p-value > Za/2A null hypothesis was rejected at level = 0.05. Using the same data, what will be the resultof the test at level a = 0.10?A. Reject HoB. Fail to reject HoC. No conclusion can be made

here use decision rule of hypothesis testing : when p-value < alpha then reject null hypothesis…

Answered: then If the value of test statistic for…

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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The Woodcock-Johnson Cognitive Ability test indicates that the average score is 95. The same group of 12th grade students (n = 72) in Columbus are tested and the sample mean is 110.1 and the sample standard deviation is 15.2. Do the scores provide good evidence that the mean IQ of this population is greater than 95? State the null (H0) and alternative (Ha) hypotheses. What are the confidence intervals for this data? What is the value of the test statistic? What is the p-value for this data? What is your decision about the null hypothesis? summerize the conclusion in the context
A random sample of 828 births included 427 boys. Use a 0.10 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? D. Ho: p=0.515 H₁: p0.515 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is 0.04 (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is 0 (Round to three decimal places as needed.) 4 √₁ S Vi 1 (4) More
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Find the P-value for the indicated hypothesis test with the given standardized test statistic, z. Decide whether to reject H0 for the given level of significance α. Right-tailed test with test statistic z=1.85 and α=0.09 P-value=enter your response here (Round to four decimal pla
The Woodcock-Johnson Cognitive Ability test indicates that the average score is 95. The same group of 12th grade students (n = 72) in Columbus are tested and the sample mean is 110.1 and the sample standard deviation is 15.2. Do the scores provide good evidence that the mean IQ of this population is greater than 95? What is the p-value for this data what is your decision about the null hypothesis? reject or fail to reject?
A published report claims that 35% of college students have used an online dating site or app. Believing this claimed value is too low, a researcher surveys a random sample of n = 420 college students about their experiences with online dating sites and apps. A total of 166 of the surveyed students indicate that they have used online dating sites or apps. Use this information to conduct a hypothesis test at a significance (or alpha) level of 0.05. 1.Based on the test statistic you computed to answer Question 11, along with what you see in Table B, what should the P-value be? 2. Based on the P-value you obtained and how it compares to the significance level of 0.05, what is your conclusion? 3. Look again at your answer to Question 13. If a smaller significance level had been chosen—like 0.01—would you have reached a different conclusion? Please explain. 4. Again, look back at how you answered Question 13. If a larger significance level had been chosen—like 0.10—would you have…
Find the P-value for the indicated hypothesis test with the given standardized test statistic, z. Decide whether to reject H, for the given level of significance a. Two-tailed test with test statistic z = - 1.69 and a = 0.07 P-value = (Round to four decimal places as needed.)
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A researcher conducts a study to understand the relationship between estriol level in pregnant women and the birth weight of their babies. The researcher collects a sample of 100 children. The sample mean birth weight is =3, with sample standard error S = 1.7 Form a 95% and 99% confidence interval for the true mean birth weight An infant is considered 'underweight' if his or her birth weight is below than 1.8. Test the null hypothesis that the true mean is 1.8 against the alternative hypothesis that the true mean is less than 1.8. Compute a Z-score. What do you conclude? 3.True or false (and why): the p-value is the probability that the hypothesis is true.
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The manager of a driving school claims that the mean time taken to learn how to drive a car is 8 hours for all new drivers. A sample of 16 new drivers showed that the mean time taken by them to learn how to drive a car is 9.5 hours with a standard deviation of 1.5 hours. Test at the 1% significance level if the mean time taken to learn how to drive a car by all new drivers is greater than 8 hours. Null Hypothesis [ Choose] Alternative hypothesis Choose ] Critical values [ Choose ] test statistic [Choose] Conclusion [ Choose] Summary statement [Choose]
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