2 years ago

Hi can someone help me?

Mathematics

1 answer:

Serga [27]2 years ago

5 0

Answer:

1, B

2, A

3, A

4, C

5, A

6, B

7, A

8, B

9, B

10, A

this is my assumption

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The head of the Westlane Cultural Center wants to get a sense of how quickly pledges from donors arrive at the center. It takes

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Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 28, \sigma = 7$