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Question 11 - A professor wants to estimate how long students stay connected during twoehour online lectures. From a random sample of 16 students, the mean stay time was 93 minutes with a standard deviation of 10 minutes. Assuming the population has a normal distribution, develop a 90% confidence interval estimate for the population mean by determining the following values: 1. a) Point Estimate 2| l b) df :| | Significance level (or) :| l c} Determine the critical value rounded to 3 decimal places. Enter a positive value. [3 decimal places] Critical value 2' | d) [3 decimal places] Standard Error 2' | e) [1 decimal place] Margin of Error 2| | f) [1 decimal place] Lower Confidence Limit 2' | g) [1 decimal place] Upper Confidence Limit = 2. Should we reject a claim that the population mean, M = 86 minutes? Why? Select an answer 3. If the sample size increases, what will be the effect on the margin of error? Select an answer Question Help: Video Message instructor Submit QuestionUsing two different confidence levels, a researcher constructs two confidence intervals for a population mean based on one sample taken from a normal population with known population variance 0'2 : 676. The standard error of the mean is 4.459. The confidence intervals are: Interval 1: 87.57