3 years ago

Tell me the answer for each box its on classkick and i can see if its wrong

Mathematics

2 answers:

Licemer1 [7]3 years ago

8 0

Answer:

$19.35

Step-by-step explanation:

irinina [24]3 years ago

8 0

it takes two answers to mark someone brainliest so mark him now

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Two S-year old girls, Alyse and Jocelyn, have been training to run a mile racc Alyse's I mile A is approximately Normally distri

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3 years ago

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Step-by-step explanation:

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3 years ago

A manager records the repair cost for 4 randomly selected stereos. A sample mean of $82.64 and standard deviation of $14.32 are

zysi [14]

Answer:

CI = (70.861 , 94.418)

Step-by-step explanation:

In order to determine the 90% confidence interval you use the following formula (for a population approximately normal):

$CI=(\overline{x}-Z_{\alpha/2}\frac{\sigma}{\sqrt{n}},\overline{x}+Z_{\alpha/2}\frac{\sigma}{\sqrt{n}})$ (1)

$\overline{x}$ : mean = 82.64

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n: sample = 4

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$Z_{0.05}(\frac{14.32}{\sqrt{4}})=(1.645)(\frac{14.32}{\sqrt{4}})=11.778$

The confidence interval will be:

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4 years ago

Please PLEASE HELP><br> What is the total bill you would leave for a $22 haircut and a 15% tip?

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Step-by-step explanation:

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3 years ago

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Answer:

Step-by-step explanation:

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4 years ago

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