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3 years ago

HELP PLEASE ILL GIVE BRAINLIEST

Mathematics

1 answer:

user100 [1]3 years ago

3 0

first 1 because it saws less than or equal to 175

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2 years ago

Mr. Parsons bought 267 apples to make pies for his shop. Six apples are needed for each pie.

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my anwser was 44R3

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3 years ago

The operating costs for each machine for one day have an unknown distribution with mean 1610 and standard deviation 136 dollars.

Lelechka [254]

Answer:

The standard deviation for the sample mean distribution is $\sigma_{\bar{X}}=\frac{136}{\sqrt{45}}=\frac{136\sqrt{5}}{15} \approx 20.274$

Step-by-step explanation:

The central limit theorem states that if you have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population then the distribution of the sample means will be approximately normally distributed.

For the random samples we take from the population, we can compute the standard deviation of the sample means:

$\sigma_{\bar{X}}=\frac{\sigma}{\sqrt{n}}$

From the information given

The standard deviation σ = 136 dollars

The sample n = 45

Thus,

$\sigma_{\bar{X}}=\frac{136}{\sqrt{45}}=\frac{136\sqrt{5}}{15} \approx 20.274$

The standard deviation for the sample mean distribution is $\sigma_{\bar{X}}=\frac{136}{\sqrt{45}}=\frac{136\sqrt{5}}{15} \approx 20.274$

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4 years ago