a group of statistic students decided to conduct a survey at their university to estimate the average (mean) amount of time students spent studying per week. The sampled 554 students and found a mean of 22.3 hours per week. Assuming a population standard deviation of 6 hours, what is the 95% level of confidence
Added by Gonzalo K.
Step 1
The standard error of the mean is the standard deviation divided by the square root of the sample size. In this case, the standard error of the mean is 6 / sqrt(554) = 0.254 hours. Show more…
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