Standardized test Something Great/tutorialoutletdotcom Test Z is a standardized test that all high school | Page 2

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fail to reject, fail to reject Test Y is a standardized test that all high
school seniors take. The mean test score for a random
sample of 30 students who take the test is 77.1. The sample standard
deviation is 15. A high
school counselor hypothesizes that the mean score on Test Y for all
high school seniors would be
70. Determine whether or not the results above support the
counselor’s hypothesis. Here are
the null and alternative hypotheses:
H0: μ = 70
H1: μ ≠ 70 A)
B)
C)
D) You would _____ the null hypothesis at 10% significance level.
You would _____ the null
hypothesis at the 1% significance level.
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reject, fail to reject
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fail to reject, fail to reject 3. Students are randomly assigned into a
treatment group and a control group. Members of the
treatment group use method B to learn how to read. Members of the
control group follow the