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valina [46]
2 years ago
12

Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the employees. From past experience, she

has found that the reviews take her approximately four hours each to do with a population standard deviation of 1.2 hours. Let Χ be the random variable representing the time it takes her to complete one review.Assume Χ is normally distributed.Let be the random variable representing the mean time to complete the 16 reviews. Assume that the 16 reviews represent a random set of reviews.
A. Find the probability that the mean of a month’s reviews will take Yoonie from 3.5 to 4.25 hrs. Sketch the graph, labeling
and scaling the horizontal axis. Shade the region corresponding to the probability.
b. P(________________) = _______
C. Find the 95th percentile for the mean time to complete one month's reviews. Sketch the graph.
D. The 95th Percentile =____________
Mathematics
1 answer:
mojhsa [17]2 years ago
5 0

Answer: i think it would be 20

Step-by-step explanation:

if you do the problem it should show you

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Vladimir79 [104]

Answer:

17 inches

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Option (A)

Step-by-step explanation:

To find the value of 'a' we will use the tangent-chord theorem,

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