3 years ago

Calculate the missing amounts for companies a to e

Mathematics

1 answer:

frez [133]3 years ago

8 0

Answer:

where is the question?

Step-by-step explanation:

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alexandr1967 [171]

Answer:

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Step-by-step explanation:

Given

The t critical value at 0.05 level = 2.023 for the df = 39

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Mean

$\bar{x} - t * \frac{s}{\sqrt{n} } < \mu < \bar{x} + t * \frac{s}{\sqrt{n} }$

Substituting the given values we get -

$\30.9 - 2.023 * \frac{11.8}{\sqrt{40} } < \mu < \30.9 + 2.023 * \frac{11.8}{\sqrt{40} }\\27.126 < \mu < 34.674$

Hence, the 95% confidence interval is

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Answer:

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Step-by-step explanation:

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