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hoa [83]
3 years ago
13

Suppose that we have constructed a 95% confidence interval for the true mean salary of graduating business majors: (50k, 70k). B

ased on this interval, what was the sample mean salary of our sampled business majors?a. 70kb. 55kc. 65kd. 60ke. 50k
Mathematics
1 answer:
slava [35]3 years ago
4 0

Answer:

d. 60k

Step-by-step explanation:

The sample mean is the midpoint between the lower and the upper limit of the confidence interval, that is, the sum of the lower and the upper limit divided by 2.

In this problem, we have that:

Lower limit: 50k

Upper limit: 70k

(50k + 70k)/2 = 60k

So the correct answer is:

d. 60k

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