The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) 2.3 3.4 2.6 D below. 1.6 0.9 4.0 Assume the population is normally...


The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) 2.3<br>3.4<br>2.6 D<br>below.<br>1.6<br>0.9<br>4.0<br>Assume the population is normally distributed.<br>2.3<br>1.1<br>3.8<br>0.2<br>2.2<br>3.4<br>(a) Find the sample mean.<br>X =<br>(Round to two decimal places as needed.)<br>(b) Find the sample standard deviation.<br>S =<br>(Round to two decimal places as needed.)<br>(c) Construct a 99% confidence interval for the population mean u.<br>A 99% confidence interval for the population mean is<br>(Round to two decimal places as needed.)<br>

Extracted text: The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) 2.3 3.4 2.6 D below. 1.6 0.9 4.0 Assume the population is normally distributed. 2.3 1.1 3.8 0.2 2.2 3.4 (a) Find the sample mean. X = (Round to two decimal places as needed.) (b) Find the sample standard deviation. S = (Round to two decimal places as needed.) (c) Construct a 99% confidence interval for the population mean u. A 99% confidence interval for the population mean is (Round to two decimal places as needed.)

Jun 09, 2022
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