What is the measure of
∠
D
E
G
∠DEGangle, D, E, G on circle
O
OO?

∘
∘
degrees

C
C
F
F
D
D
E
E
G
G
5
0
∘
50
∘

O
O

Arandom sample of 45 observations results in a sample mean of 68. the population standard deviation is known to be 23 a. compute the margin of error at a 959% confidence interval. b. compute the 95% confidence interval for the population mean c. compute the 90% confidence interval for the population mean. d. compute the 75% confidence interval for the population mean