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

Test Z is a standardized test that all high school
seniors take. The mean test score for a random
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MAT 300 Stats Problem Set #10a
1. Test Z 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 75.7. The population
standard deviation is 12. A high
school counselor hypothesizes that the mean score on Test Z 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) 2. You would _____ the null hypothesis at 10% significance level.
You would _____ the null
hypothesis at the 1% significance level.