6. A simple random sample of 60 test scores on a statewide exam, given to all graduating high school students, produced a sample mean of 52. The state Teacher,s Association believes the mean test score for the population of students who took the test is greater than 50. Assume the population standard deviation is 15 and the significance level for the test is a = 0.01 a) State the appropriate null and alternative hypotheses b) Compute the value of the test statistic c) State the conclusion

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6. A simple random sample of 60 test scores on a statewide exam, given to all
graduating high school students, produced a sample mean of 52. The state
Teacher,s Association believes the mean test score for the population of students
who took the test is greater than 50. Assume the population standard deviation is
15 and the significance level for the test is a =
0.01
a) State the appropriate null and alternative hypotheses
b) Compute the value of the test statistic
c) State the conclusion
Transcribed Image Text:6. A simple random sample of 60 test scores on a statewide exam, given to all graduating high school students, produced a sample mean of 52. The state Teacher,s Association believes the mean test score for the population of students who took the test is greater than 50. Assume the population standard deviation is 15 and the significance level for the test is a = 0.01 a) State the appropriate null and alternative hypotheses b) Compute the value of the test statistic c) State the conclusion
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