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Assume the population is normally distributed (a) Find the sample mean i: 234 (Round to two decimal places as needed ) (1)) Find the sample standard deviation 5: 117' (Round to [we decimal places as needed) (c) Construct a 99% condence Interval for the population mean 54 A9934: condence Interval for the population mean is 01D) (Round to two decimal places as needed ) Tutoring Help me solve this Get more help A The grade point averages (GPA) for 12 randomly selected college students are shown on the right Complete parts (a) through (c) below