Question: tHIS SUBJECT IS Engineering Data Analysis ..... PLEASE HELP... IT IS OKAY IF THERE IS NOSOLUTION MAAM OR SIR...... - IN RETURN I PROMISE TO

tHIS SUBJECT IS Engineering Data Analysis ..... PLEASE HELP... IT IS OKAY IF THERE IS NOSOLUTION MAAM OR SIR...... - IN RETURN I PROMISE TO GIVE HELPFUL RATING DIRECTLY..

5 students in a college were selected at random and their ages were found to be 18, 21. 19, 20 and 26. (a) Calculate the standard deviation of the ages in the sample. (b) Calculate the standard error. 0 5.114;4.393 0 4.1142393 O 5.114;3.393 O 3.114;1.393 A random sample of 25 students had a grade point average with a mean of 2.86. Past studies have shown that the standard deviation is 0.15 and the population is normally distributed. Construct a 90% confidence interval for the population mean grade point average. () 2J1

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