4 years ago

Nina has 25 tennis balls and Hal has 30.

Mathematics

2 answers:

nadezda [96]4 years ago

7 0

It's A, here's a tip, a variable can never be on to the right of the equal sign, so it's in the expression

Nimfa-mama [501]4 years ago

3 0

The answer is A. x+25=30

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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

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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

( 27.126 , 34.674)

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3 years ago

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Nat2105 [25]

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seropon [69]

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Read 2 more answers