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irakobra [83]
3 years ago
15

A methods and measurements analyst needs to develop a time standard for a certain task. In a preliminary study, he observed one

of his workers perform this task five times, with the following results:
Observation --- 1 --- 2 --- 3 --- 4 --- 5
Time(seconds) 84 ---76 - -80 --84 --76

How many observations should be made if the analyst wants to be 99.74 percent confident that the maximum error in the observed time is two seconds?

a. 25
b. 6
c. 49
d. 5
e. 36
Business
1 answer:
Harlamova29_29 [7]3 years ago
8 0

Answer:

e. 36

Explanation:

Number of observations needed, n = (z *s / h) ^2

Where,  z = number of standard deviation needed for desired confidence level of 99.74% = 3, s = Standard Deviation of task = 4 seconds, h = maximum error in the observed time = 2 seconds.

n = (3*4/ 2) ^2

n = (12/2) ^2

n = 6^2

n = 36 observations

Thus, the number of observations needed in the task is 36 observations

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3 years ago
On January 1, 2021, G Corp. granted stock options to key employees for the purchase of 87,000 shares of the company's common sto
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The same should be considered and relevant too

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3 years ago
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Answer:

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a. All of these answers are correct.

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Sellers allow customers to use credit cards for all of the following reasons: (You may select more than one answer. Single click
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