The number of hours per week that high school students spend on computers is normally distributed,with a mean of 5 hours and a standard deviation of 2 hours.70 students are chosen at random.Let $\overline{ y}$ represent the mean number of hours spent on the computer for this group.Find the probability that $\overline{ y}$ is between 5.1 and 5.7.
A)0.672
B)0.660
C)0.115
D)0.336
E)2.510

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The Answer of The number of hours per week that high school students spend on computers is normally distributed,with a mean of 5 hours and a standard deviation of 2 hours.70 students are chosen at random.Let $\overline{ y}$ represent the mean number of hours spent on the computer for this group.Find the probability that $\overline{ y}$ is between 5.1 and 5.7.
A)0.672
B)0.660
C)0.115
D)0.336
E)2.510

The Number of Hours Per Week That High School Students y‾\overline{ y}y​

The Number of Hours Per Week That High School Students $\overline{ y}$