1) Mean time to complete one review = 4 hours
4) Mean time for Yoonie to complete 16 review = 4 hours
5) Standard deviation for her to complete 16 review, σₓ = σ/√n = 1.2/√16 = 0.3
6) P(3.5 < X̅ < 4.25) =
= P( (3.5-4)/(1.2/√16) < (X-µ)/(σ/√n) < (4.25-4)/(1.2/√16) )
= P(-1.6667 < z < 0.8333)
= P(z < 0.8333) - P(z < -1.6667)
Using excel function:
= NORM.S.DIST(0.8333, 1) - NORM.S.DIST(-1.6667, 1)
= 0.750
thanks in advance! Using the information below, answer the next 6 questions: Yoonie is a personnel...
QUESTION 1 2 points Save Answer Using the information below, answer the next 6 questions: 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 (1) What is the mean time to complete one review? QUESTION 2 2 points Save Answer (2) What is the standard deviation...
Using the information below, answer the next 6 questions: Yoonie is a personnel manager in a large corporation. Each month she must review the employees in her department. From past experience, she has found that the reviews take her approximately four hours each to do with a standard deviation of 1.2 hours. (1) What is the mean time to complete one review? QUESTION 2 (2) How long on average does it takes to complete two reviews? QUESTION 3 (3) What...
Using the information below, answer the next 6 questions: 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. (6) What is the probability that 16 reviews will take Yoonie from 3.5 to 4.25 hours? (Round to three decimal places)
Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the employees. From the past experience, she has found that the reviews taker her approximately four hours each to do with a population standard deviation of 1.2 hours. 1. What is the mean time to complete one review? 2. What is the standard deviation to complete one review? 3. What is the probability that one review will take Yoonie from 3.5 to 4.25 hours?...
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. (1) What is the mean time to complete one review? QUESTION 2 (2) What is the standard deviation to complete one review? QUESTION 3 (3) What is the probability that one review will take Yoonie from 3.5...
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