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Author Question: A student scores 56 on a geography test and 267 on a mathematics test. The geography test has a mean ... (Read 551 times)

kwoodring

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Question 1

A set of data items is normally distributed with a mean of 500. Find the data item in this distribution that corresponds to the given z-score.

z = -3, if the standard deviation is 30.
◦ 590
◦ 470
◦ 410
◦ 497

Question 2

A student scores 56 on a geography test and 267 on a mathematics test. The geography test has a mean of 80 and a standard deviation of 20. The mathematics test has a mean of 300 and a standard deviation of 22. If the data for both tests are normally distributed, on which test did the student score better?
◦ The student scored the same on both tests.
◦ The student scored better on the geography test.
◦ The student scored better on the mathematics test.


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Marked as best answer by kwoodring on Feb 2, 2020

cam1229

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kwoodring

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Reply 2 on: Feb 2, 2020
Wow, this really help


marict

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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