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SSSSS [86.1K]
2 years ago
14

It took sara mother 6 hours to drive to the university and bring Sarah back home for spring break

Mathematics
1 answer:
lyudmila [28]2 years ago
5 0

Answer:

6 hours

Step-by-step explanation:

If it took Sara's mother six hours to do that, it took six hours.

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Step-by-step explanation:

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For a data set of the pulse rates for a sample of adult? females, the lowest pulse rate is 39 beats per? minute, the mean of the
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Answer:

a) The difference is of 35 beats per minute.

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Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

In this question:

Mean \mu = 74, standard deviation \sigma = 11.4

a. What is the difference between the pulse rate of 39 beats per minute and the mean pulse rate of the? females?

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The difference is of 35 beats per minute.

b. How many standard deviations is that? [the difference found in part? (a)?

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|Z| = 3.07

So 3.07 standard deviations below the mean.

c. Convert the pulse rate of 39 beats per minutes to a z score.

From item b. above, Z = -3.07.

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Step-by-step explanation:

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