What is the common ratio of the geometric sequence? 25, -5, 1,..

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Ответ:

cathyjuan

14.01.2023

Mathematics

We are given:

$\mu=247,\sigma=60$

We need to find the z scores for the following vacation expense amounts:

$197, $277, $310

We know that z score formula is:

$z=\frac{x-\mu}{\sigma}$

When x = 197 , the z score is:

$z=\frac{197-247}{60}$

$=\frac{-50}{60}$

=-0.83

When x = 277 , the z score is:

$z=\frac{277-247}{60}$

$=\frac{30}{60}$

=0.5

When x = 310 , the z score is:

$z=\frac{310-247}{60}$

$=\frac{63}{60}$

=1.05

Therefore, the z scores for the vacation expense amounts $197 per day, $277 per day, and $310 per day are -0.83, 0.5 and 1.05 respectively

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