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terms?
2. One objective of a community program to prevent head injuries is to increase the use of helmets to at least 50% of child and adult bicyclists. what is an appropriate impact evaluation question for this objective?
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favor of H1: Mean≠70 at alpha=0.05.
B.If a test is run and p=0.0356, then we can reject H0 at alpha=0.01.
C.If a 95% CI for the difference in two independent means is (-4.5 to 2.1), then the point estimate is -2.1.
D.If a 95% CI for the difference in two independent means is (2.1 to 4.5), there is no significant difference in means.
E.The margin of error is always greater than or equal to the standard error.
I can only choose ONE
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Malnutrition amongst the poor in Mexico. I’ve answered some thing already and just need you to add some more details to help me better understand
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you!
The mean body mass index (BMI) for boys age 12 is 23.6. An investigator wants to test if the BMI is higher in 12-year-old boys living in New York City. How many boys are needed to ensure that a two-sided test of hypothesis has 80% power to detect a difference in BMI of 2 units? Assume that the standard deviation in BMI is 5.7.
Alpha = ________
Z1-α/2= ________
Z1-β= ________
ES = ________
n= ________
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