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Q1) point averages(GPA) for 12 randomly chosen college students are shown on right. Suppose population is normally distributed.
2.4
3.5
2.9
1.9
0.8
4.0
2.3
1.5
3.7
0.2
2.2
3.2
i) Determine the sample mean.
ii) Determine the sample standard deviation
ii) Create a 95% confidence interval for population mean µ.
95% confidence interval for population mean is
Q2) Using data table given below, find out the range and median?
$110
$200
$190
$175
$120
$100
$180
$170
$145
$95
$185
$210
$135
$195
$240
a) $95 to $210
b) $145
c) $95
d) $115
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