The mean number of hours teenagers are supposed to sleep is 7.5 hours per night. A high school administrator believes one of the reasons students at the school are struggling is because they do not get enough sleep. To test this, the administrator selected a random sample of 40 students from all of the students at school and asked how many hours of sleep they got last night. The sample mean was 6.75 hours and the sample standard deviation was 1.75 hours. What is the standardized test statistic for the significance test the school administrator wants to perform? options t = – 2.7105 t = – 0.4286 t = 0.4286 t = 2.7105
The mean number of hours teenagers are supposed to sleep is 7.5 hours per night. A high school administrator believes one of the reasons students at the school are struggling is because they do not get enough sleep. To test this, the administrator selected a random sample of 40 students from all of the students at school and asked how many hours of sleep they got last night. The sample mean was 6.75 hours and the sample standard deviation was 1.75 hours. What is the standardized test statistic for the significance test the school administrator wants to perform? options t = – 2.7105 t = – 0.4286 t = 0.4286 t = 2.7105
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 7PPS
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The mean number of hours teenagers are supposed to sleep is 7.5 hours per night. A high school administrator believes one of the reasons students at the school are struggling is because they do not get enough sleep. To test this, the administrator selected a random sample of 40 students from all of the students at school and asked how many hours of sleep they got last night. The sample mean was 6.75 hours and the sample standard deviation was 1.75 hours. What is the standardized test statistic for the significance test the school administrator wants to perform?
options
t = – 2.7105
t = – 0.4286
t = 0.4286
t = 2.7105
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