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3 years ago

What is the interquartile range of the data? 53, 47, 60, 45, 62, 59, 65, 50, 56, 48

Mathematics

1 answer:

Katyanochek1 [597]3 years ago

8 0

A: 123.8
Hope this helped:)

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x>=0

Step-by-step explanation:

From the equation, we can see that x must be greater or equal to 0. This is true because every answer to an absolute value is positive or equal to 0. That is your answer.

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3 years ago

Maria just got a raise at work. She was making $9 per hour, but now she makes 150% of that amount.

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13.50

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In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the fol

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Answer:

$0.071,1.928$

Step-by-step explanation:

Downtown Store North Mall Store

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Sample standard deviation s $2 $1

$n_1=25\\n_2=20$

$\bar{x_1}=9\\ \bar{x_2}=8$

$s_1=2\\s_2=1$

$x_1-x_2=9-8=1$

Standard error of difference of means = $\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}$

Standard error of difference of means = $\sqrt{\frac{2^2}{25}+\frac{1^2}{20}}$

Standard error of difference of means = $0.458$

Degree of freedom = $\frac{\sqrt{(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}})^2}{\frac{(\frac{s_1^2}{n_1})^2}{n_1-1}+\frac{(\frac{s_2^2}{n_2})^2}{n_2-1}}$

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Degree of freedom =36

So, z value at 95% confidence interval and 36 degree of freedom = 2.0280

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Confidence interval = $1-(2.0280)\times 0.458,1+(2.0280)\times 0.458$

Confidence interval = $0.071,1.928$

Hence Option A is true

Confidence interval is $0.071,1.928$

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2 years ago

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Answer:

b) 11

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Those are my answer that try

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