study was conducted to determine whether an expectant mother’s cigarette smoking has any effect on the bone mineral content of her otherwise healthy child. A sample of 90 newborns whose mothers smoked during pregnancy has mean bone mineral content 0.097 g/cm and standard deviation 0.027 g/cm; a sample of 160 infants whose mothers did not smoke has mean 0.090 g/cm and standard deviation 0.025 g/cm. Assume that the underlying population variances are equal. A. Conduct the test at the 0.05 level of significance. What are your null and alternative hypotheses? a. H0: μ1 - μ2 <= 0 b. HA: μ1 - μ2 > 0 c. H0: Δ <= 0 d. HA: Δ > 0 e. H0: Δ == 0 f. HA: Δ =/= 0 g. H0: μ1 - μ2 == 0 h. HA: μ1 - μ2 =/= 0 B. Conduct the test at the 0.05 level of significance. What is the p-value of your test? a. 0.020 b. 0.040 c. 0.96 C. Conduct the test at the 0.05 level of significance. What is your conclusion?
study was conducted to determine whether an expectant mother’s cigarette smoking has any effect on the bone mineral content of her otherwise healthy child. A sample of 90 newborns whose mothers smoked during pregnancy has mean bone mineral content 0.097 g/cm and standard deviation 0.027 g/cm; a sample of 160 infants whose mothers did not smoke has mean 0.090 g/cm and standard deviation 0.025 g/cm. Assume that the underlying population variances are equal. A. Conduct the test at the 0.05 level of significance. What are your null and alternative hypotheses? a. H0: μ1 - μ2 <= 0 b. HA: μ1 - μ2 > 0 c. H0: Δ <= 0 d. HA: Δ > 0 e. H0: Δ == 0 f. HA: Δ =/= 0 g. H0: μ1 - μ2 == 0 h. HA: μ1 - μ2 =/= 0 B. Conduct the test at the 0.05 level of significance. What is the p-value of your test? a. 0.020 b. 0.040 c. 0.96 C. Conduct the test at the 0.05 level of significance. What is your conclusion?
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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A study was conducted to determine whether an expectant mother’s cigarette smoking has any effect on the bone mineral content of her otherwise healthy child. A sample of 90 newborns whose mothers smoked during pregnancy has mean bone mineral content 0.097 g/cm and standard deviation 0.027 g/cm; a sample of 160 infants whose mothers did not smoke has mean 0.090 g/cm and standard deviation 0.025 g/cm. Assume that the underlying population variances are equal.
A. Conduct the test at the 0.05 level of significance. What are your null and alternative hypotheses?
a. H0: μ1 - μ2 <= 0
b. HA: μ1 - μ2 > 0
c. H0: Δ <= 0
d. HA: Δ > 0
e. H0: Δ == 0
f. HA: Δ =/= 0
g. H0: μ1 - μ2 == 0
h. HA: μ1 - μ2 =/= 0
B. Conduct the test at the 0.05 level of significance. What is the p-value of your test?
a. 0.020
b. 0.040
c. 0.96
C. Conduct the test at the 0.05 level of significance. What is your conclusion?
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