Doctor Hector claims that the population mean birth weight of babies born at the hospital is exactly 8 lb. Sheila, a nurse who assists Hector, wants to test this claim, so she takes a random sample of 55 babies born at the hospital. She determines that the sample mean weight is 7.8 lb with a sample standard deviation of 0.9 lb. The test statistic t for a hypothesis test of Ho : μ = 8 versus Ha : μ 8 is t ~一1.65 . If O. 10 〈p-value< 0.20 and the level of significance is α = 0.05, which of the following statements are accurate for this hypothesis test to evaluate the claim that the true population mean birth weight of babies born at the hospital is not equal to 8 lb? Select all that apply: Reject the null hypothesis that the true population mean birth weight of babies born at the hospital is equal to 8 lb Fail to reject the null hypothesis that the true population mean birth weight of babies born at the hospital is equal to 8 lb O There is enough evidence at the α-0.05 level of significance to support the claim that the true population mean birth weight of babies born at the hospital is not equal to 8 lb. There is not enough evidence at the a 0.05 level of significance to suggest that the true population mean birth weight of babies born at the hospital is not equal to 8 lb.
Doctor Hector claims that the population mean birth weight of babies born at the hospital is exactly 8 lb. Sheila, a nurse who assists Hector, wants to test this claim, so she takes a random sample of 55 babies born at the hospital. She determines that the sample mean weight is 7.8 lb with a sample standard deviation of 0.9 lb. The test statistic t for a hypothesis test of Ho : μ = 8 versus Ha : μ 8 is t ~一1.65 . If O. 10 〈p-value< 0.20 and the level of significance is α = 0.05, which of the following statements are accurate for this hypothesis test to evaluate the claim that the true population mean birth weight of babies born at the hospital is not equal to 8 lb? Select all that apply: Reject the null hypothesis that the true population mean birth weight of babies born at the hospital is equal to 8 lb Fail to reject the null hypothesis that the true population mean birth weight of babies born at the hospital is equal to 8 lb O There is enough evidence at the α-0.05 level of significance to support the claim that the true population mean birth weight of babies born at the hospital is not equal to 8 lb. There is not enough evidence at the a 0.05 level of significance to suggest that the true population mean birth weight of babies born at the hospital is not equal to 8 lb.
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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Transcribed Image Text:Doctor Hector claims that the population mean birth weight of babies born at the hospital is exactly 8 lb. Sheila, a nurse
who assists Hector, wants to test this claim, so she takes a random sample of 55 babies born at the hospital. She
determines that the sample mean weight is 7.8 lb with a sample standard deviation of 0.9 lb. The test statistic t for a
hypothesis test of Ho : μ = 8 versus Ha : μ 8 is t ~一1.65 . If O. 10 〈p-value< 0.20 and the level of significance is
α = 0.05, which of the following statements are accurate for this hypothesis test to evaluate the claim that the true
population mean birth weight of babies born at the hospital is not equal to 8 lb?
Select all that apply:
Reject the null hypothesis that the true population mean birth weight of babies born at the hospital is equal to
8 lb
Fail to reject the null hypothesis that the true population mean birth weight of babies born at the hospital is equal
to 8 lb
O
There is enough evidence at the α-0.05 level of significance to support the claim that the true population mean
birth weight of babies born at the hospital is not equal to 8 lb.
There is not enough evidence at the a 0.05 level of significance to suggest that the true population mean birth
weight of babies born at the hospital is not equal to 8 lb.
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