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IceJOKER [234]
2 years ago
10

Please help needed its due soon

Mathematics
1 answer:
lions [1.4K]2 years ago
7 0

The second option

(Pie x 2.5 squared x height)

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Step-by-step explanation:

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From 1970 to 1990 the consumer price index increased from 38.8 to 130.7. If a tube of toothpaste cost 0.77 in 1970 and the price
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Betty had $40 in her pocket. She bought 12 identical bags of popcorn. Betty was left with $10 after buying the popcorn. What was
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A newly hired basketball coach promised a high-paced attack that will put more points on the board than the team’s previously te
puteri [66]

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a. z = 2.00

Step-by-step explanation:

Hello!

The study variable is "Points per game of a high school team"

The hypothesis is that the average score per game is greater than before, so the parameter to test is the population mean (μ)

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H₀: μ ≤ 99

H₁: μ > 99

α: 0.01

There is no information about the variable distribution, I'll apply the Central Limit Theorem and approximate the sample mean (X[bar]) to normal since whether you use a Z or t-test, you need your variable to be at least approximately normal. Considering the sample size (n=36) I'd rather use a Z-test than a t-test.

The statistic value under the null hypothesis is:

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σ/√n 6/√36

I don't have σ, but since this is an approximation I can use the value of S instead.

I hope it helps!

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3 years ago
The radius of a circular park is 120 m. To the nearest meter, what is the
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A

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3 years ago
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