ANSWER AND WHY, THANKS 7. The company executives at Company XYZ, believe that on

Q: ANSWER AND WHY, THANKS 7. The company executives at Company XYZ, believe that on

The statistical software output for this problem is: One sample proportion summary hypothesis test: p : Proportion of successes H0 : p = 0.4 HA : p 0.4 Hypothesis test results: Since p - value is greater than 0.05, we do not reject the null hypothesis. Option a is correct. Proportion Count Total Sample Prop. Std. Err. Z-Stat P-value p 90 200 0.45 0.034641016 1.4433757 0.1489

ID: 3313694 • Letter: A

Question

ANSWER AND WHY, THANKS

7. The company executives at Company XYZ, believe that only 40% of their 10,000 employees are extremely satisfied with their jobs and have been working to improve this value. Therefore, they just surveyed 200 employees which indicated that 90 employees were extremely happy working for Company XYZ. If the standard for rejecting the null hypothesis is a 95% confidence interval, what do you do?

a. Reject the null hypothesis

b. Fail to reject the null hypothesis

c. Do another sample with a smaller sample size

d. Not enough information to decide.

Explanation / Answer

The statistical software output for this problem is:

One sample proportion summary hypothesis test:
p : Proportion of successes
H0 : p = 0.4
HA : p 0.4

Hypothesis test results:

Since p - value is greater than 0.05, we do not reject the null hypothesis.

Option a is correct.

Proportion Count Total Sample Prop. Std. Err. Z-Stat P-value p 90 200 0.45 0.034641016 1.4433757 0.1489

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ANSWER AND WHY, THANKS 7. The company executives at Company XYZ, believe that on

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