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notsponge [240]
3 years ago
6

The ages of the employees at Solar Systems, Inc. is normally distributed with a mean of 32.7 years and a standard deviation of 1

.8 years.
What percentage of employees at Solar Systems, Inc. are younger than 30 years old? Round your answer to the nearest tenth of a percent.

A. 7.6%
B. 55.9%
C. 93.3%
D. 6.7%
Mathematics
1 answer:
svetoff [14.1K]3 years ago
7 0

Answer:

6.7%  of employees at Solar Systems, Inc. are younger than 30 years old

Step-by-step explanation:

The mean of  ages of the employees at Solar Systems is 32.7 years

Mean = \mu = 32.7

Standard deviation =\sigma = 1.8 years

We are supposed to find What percentage of employees at Solar Systems, Inc. are younger than 30 years old i.e.P(x<30)

So,Z=\frac{x-\mu}{\sigma}

Z=\frac{30-32.7}{1.8}

Z=-1.5

Refer the z table for p value

So,p value = 0.0668

So P(x<30)=0.0668= 6.68% = 6.7%

So, 6.7%  of employees at Solar Systems, Inc. are younger than 30 years old

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