Testing a Claim about a Population Mean

Question 1

What are the null and alternative hypotheses for this test?

Revolt · Accepted Answer

where = the true mean teaching salary in the metro Atlanta area

Question 2

228 Georgia teachers228 Atlanta teachers✔ 228 metro Atlanta teachers228 teachers

Revolt · Accepted Answer

✔ 228 metro Atlanta teachers

Question 3

all Georgia teachersall Atlanta teachers✔ all metro Atlanta teachersall teachers

Revolt · Accepted Answer

✔ all metro Atlanta teachers

Question 4

population is Normal✔ n is at least 30graph is not skewed; no outliers

Revolt · Accepted Answer

✔ n is at least 30

Question 5

lower-paying job✔ higher-paying job

Revolt · Accepted Answer

✔ higher-paying job

Question 6

The P-value of this test is 0.0124. What conclusion should be made?

Revolt · Accepted Answer

✔ less than; Because the P-value is = 0.05, we H0. We convincing evidence to conclude that the true mean teaching salary in the metro Atlanta area is the state average.: less than; Because the P-value is = 0.05, we H0. We convincing evidence to conclude that the true mean teaching salary in the metro Atlanta area is the state average.: reject; Because the P-value is = 0.05, we H0. We convincing evidence to conclude that the true mean teaching salary in the metro Atlanta area is the state average.: have; Because the P-value is = 0.05, we H0. We convincing evidence to conclude that the true mean teaching salary in the metro Atlanta area is the state average.: greater than

Question 7

fail to reject✔ reject

Revolt · Accepted Answer

✔ reject

Question 8

✔ havedo not have

Revolt · Accepted Answer

✔ have

Question 9

less thanequal to✔ greater thandifferent from

Revolt · Accepted Answer

✔ greater than

Question 10

If needed, use the t-table to answer the question.

Revolt · Accepted Answer

✔ 2.816; 2.816; 0.012; With a P-value = 0.05, we H0. There is evidence to conclude that the mean length of the cut boards is different from 14 feet.: less than; With a P-value = 0.05, we H0. There is evidence to conclude that the mean length of the cut boards is different from 14 feet.: reject; With a P-value = 0.05, we H0. There is evidence to conclude that the mean length of the cut boards is different from 14 feet.: enough

Testing a Claim about a Population Mean Answers

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