Help!!!!!please!!!!!

Mathematics

1 answer:

san4es73 [151]3 years ago

6 0

X=180 and for some reason I need 20 characters so blah

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IRISSAK [1]

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3 years ago

How do you find the slope of a line? (Change in Y / Change in X)

sukhopar [10]

In order to find the slope of a line, u must use the slope formula. Which is (y2-y1/x2-x1). For example if you had a set of coordinates that are (6,4) and (2,8) you would first sub the 8 from4 which gives you 4. The u do the same with 2 and 6 which gives u 4. After that you divide 4 by 4. and your answer is 1

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3 years ago

a set of average city temperatures in december are normally distributed with a mean of 16.3°C and a standard deviation of 2°C. w

koban [17]

Answer:

19.74% of temperatures are between 12.9°C and 14.9°C

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 question, we have that:

$\mu = 16.3, \sigma = 2$