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marishachu [46]
3 years ago
14

3- An archaeologist descends 18 feet into a canyon, then climbs up 14 feet. 1 point

Mathematics
1 answer:
Lady_Fox [76]3 years ago
8 0
4 feet.

Because 18-14 is 4
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B).

Step-by-step explanation:

Answer explantion

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B) exactly 3.14 :true

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Number expression for 84
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The average full-time faculty member in a college works an average of 53 hours per week. a) If we assume the standard deviation
arsen [322]

Answer:

2.28% of faculty members work more than 58.6 hours a week.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

The average full-time faculty member in a college works an average of 53 hours per week. Standard deviation of 2.8 hours.

This means that \mu = 53, \sigma = 2.8

What percentage of faculty members work more than 58.6 hours a week?

The proportion is 1 subtracted by the p-value of Z when X = 58.6. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{58.6 - 53}{2.8}

Z = 2

Z = 2 has a p-value of 0.9772

1 - 0.9772 = 0.0228

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2.28% of faculty members work more than 58.6 hours a week.

6 0
3 years ago
Help, please. Ty if you do :D
Alik [6]
I think is answer B
5 0
3 years ago
Read 2 more answers
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