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Taya2010 [7]
3 years ago
8

Hey guys can you help me im in pain and cant think strait.

Mathematics
1 answer:
Fudgin [204]3 years ago
6 0

Answer:

123

Step-by-step explanation:


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The mean high temperature on a particular day in January is 31 degrees F and the standard deviation is 8.7 degrees. One year, th
Basile [38]

Answer:

The Z-score for that day's temperature is 2.41, and since Z > 2, this temperature is significantly high.

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.

If |Z| > 2, the measure X is significantly high(Z > 2) or significantly low(Z < -2).

The mean high temperature on a particular day in January is 31 degrees F and the standard deviation is 8.7 degrees.

This means that \mu = 31, \sigma = 8.7

One year, the temperature was 52 degrees F on that day.

This means that X = 52.

What is the Z-score for that day's temperature?

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

Z = \frac{52 - 31}{8.7}

Z = 2.41

The Z-score for that day's temperature is 2.41, and since Z > 2, this temperature is significantly high.

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