Question

A medical researcher wants to determine if the average hospital stay after a certain procedure is...

A medical researcher wants to determine if the average hospital stay after a certain procedure is greater than 12.41 days. The hypotheses for this scenario are as follows: Null Hypothesis: μ ≤ 12.41, Alternative Hypothesis: μ > 12.41. If the researcher randomly samples 22 patients that underwent the procedure and determines their average hospital stay was 14.93 days with a standard deviation of 6.108 days, what is the test statistic and p-value of this test?

Question 2 options:

1)

Test Statistic: -1.935, P-Value: 0.9667

2)

Test Statistic: 1.935, P-Value: 0.0666

3)

Test Statistic: 1.935, P-Value: 0.0333

4)

Test Statistic: 1.935, P-Value: 0.9667

5)

Test Statistic: -1.935, P-Value: 0.0333

Question 3 (1 point)

Consumers Energy states that the average electric bill across the state is $69.304. You want to test the claim that the average bill amount is actually greater than $69.304. The hypotheses for this situation are as follows: Null Hypothesis: μ ≤ 69.304, Alternative Hypothesis: μ > 69.304. A random sample of 46 customer's bills shows an average cost of $69.912 with a standard deviation of $7.2687. What is the test statistic and p-value for this test?

Question 3 options:

1)

Test Statistic: 0.567, P-Value: 0.2867

2)

Test Statistic: 0.567, P-Value: 0.7133

3)

Test Statistic: 0.567, P-Value: 0.5734

4)

Test Statistic: -0.567, P-Value: 0.2867

5)

Test Statistic: -0.567, P-Value: 0.7133

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