PLEASEE help me!!

Mathematics

1 answer:

Sidana [21]2 years ago

4 0

Answer:

Your answer would be A. f(-2) = -10.

Step-by-step explanation:

f(-2) = 3(-2) - 4

f(-2) = -6 - 4

f(-2) = -10

Hope this is helpful.

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The amount of time all students in a very large undergraduate statistics course take to complete an examination is distributed c

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Answer:

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Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

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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.

The probability a student selected at random takes at least 55.50 minutes to complete the examination equals 0.6915.

This means that when X = 55.5, Z has a pvalue of 1 - 0.6915 = 0.3085. This means that when $X = 55.5, Z = -0.5$