Question: Need help asap Please !!! The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through

Need help asap Please !!!

The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) 1420 1226 990 below. 696 730 833 Assume the population is normally distributed. 722 740 550 625 1450 940 (a) Find the sample mean. K x= (Round to one decimal place as needed.) (b) Find the sample standard deviation. s= (Round to one decimal place as needed.) (c) Construct a 95% confidence interval for the population mean u. A 95% confidence interval for the population mean is (). (Round to one decimal place as needed.)

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