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mylen [45]
3 years ago
10

Complete each expression showing all steps, and simplify the final answer to lowest terms (improper fractions do not need to be

changed to mixed numbers as in grade 9, we work with improper fractions instead).

Mathematics
1 answer:
olga2289 [7]3 years ago
6 0

Answer:

a. -\frac{576}{365}

b. \frac{23}{16}

Step-by-step explanation:

The image below shows step-by-step using Order of Operations (PEMDAS) to solve both of them.

Hope this helps my friend! :)

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4 0
3 years ago
The mean height of women in a country​ (ages 20-​29) is 64.5 inches. A random sample of 75 women in this age group is selected.
Allushta [10]

Answer:

0.07378

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ/√n, where

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z = 65 - 64.5 /2.99/√75

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z = 1.4482

Probability value from Z-Table:

P(x<25) = 0.92622

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The probability that the mean height for the sample is greater than 65 ​inches is 0.07378

4 0
3 years ago
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