To find the impact of students working while enrolled in classes, a researcher carried out a survey to estimate students' mean working hours per day. This survey of 25 students provides a sample mean of 7.10 hours with a sample standard deviation of 5 hours. Assume all such students working hours follow a normal distribution.Suppose university claims in one of their newsletters that students work more than 6 hours per day on average. Suppose the researcher decided to test the university claim at a 5% significance level. Comparing test statistic with the critical value, what conclusions can you madeabout the universities claim about students' working hours?O Reject Ho. At 5% significance level, survey data does not provide enoughevidence to conclude that students work more than 6 hours per day.O Reject Ho. At 5% significance level, survey data provide enough evidence toconclude that students work more than 6 hours per day.to reject Ho. At 5% significance level, survey daevidence to conclude that students work more than 6 hours per day.pes not provide enoughO Fail to reject Họ. At 5% significance level, survey data provide enough evidenceto conclude that students work more than 6 hours per day.

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Description: To find the impact of students working while enrolled in classes, a researcher carried out a survey to estimate students' mean working hours per day. This survey of 25 students provides a sample mean of 7.10 hours with a sample standard deviation of

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Author:Amos Gilat

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To find the impact of students working while enrolled in classes, a researcher carried out a survey to estimate students' mean working hours per day. This survey of 25 students provides a sample mean of 7.10 hours with a sample standard deviation of 5 hours. Assume all such students working hours follow a normal distribution.

Suppose university claims in one of their newsletters that students work more than 6 hours per day on average. Suppose the researcher decided to test the university claim at a 5% significance level.

Comparing test statistic with the critical value, what conclusions can you made
about the universities claim about students' working hours?
O Reject Ho. At 5% significance level, survey data does not provide enough
evidence to conclude that students work more than 6 hours per day.
O Reject Ho. At 5% significance level, survey data provide enough evidence to
conclude that students work more than 6 hours per day.
to reject Ho. At 5% significance level, survey da
evidence to conclude that students work more than 6 hours per day.
pes not provide enough
O Fail to reject Họ. At 5% significance level, survey data provide enough evidence
to conclude that students work more than 6 hours per day.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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