Use these values to calculate the z test statistic, rounding the result to two decimal places. x - Ho

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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(d) What is the test statistic? What is the p-value?
Since the population standard deviation is known, a z test statistic will be calculated. Recall that the test statistic, for a hypothesis is
calculated as follows where x is the sample mean, μo is the hypothesized population mean, ao is the population standard deviation, and
n is the sample size.
Z =
O
Z =
We have already determined that x = 832, o = 150, and n = 100. The value for μ is the historical mean examination score of 800, so
Ho=
Use these values to calculate the z test statistic, rounding the result to two decimal places.
x - Ho
n
x - Ho
832-
0
√n
150
100
Transcribed Image Text:(d) What is the test statistic? What is the p-value? Since the population standard deviation is known, a z test statistic will be calculated. Recall that the test statistic, for a hypothesis is calculated as follows where x is the sample mean, μo is the hypothesized population mean, ao is the population standard deviation, and n is the sample size. Z = O Z = We have already determined that x = 832, o = 150, and n = 100. The value for μ is the historical mean examination score of 800, so Ho= Use these values to calculate the z test statistic, rounding the result to two decimal places. x - Ho n x - Ho 832- 0 √n 150 100
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