The z value associated with a two?sided 80% confidence interval is _______.
A)1.645
B)1.28
C)0.84
D)0.29
E)2.00

Multiple Choice

Related questions

Q 24

The z value associated with a two?sided 95% confidence interval is _______.
A)1.28
B)1.645
C)1.96
D)2.575
E)2.33

Q 26

The z value associated with a two?sided 88% confidence interval is _______.
A)1.28
B)1.55
C)1.17
D)0.88
E)1.90

Q 27

Suppose a researcher is interested in understanding the variation in the price of store brand milk.A random sample of 36 grocery stores is selected from a population and the mean price of store brand milk is calculated.The sample mean is $3.13 with a standard deviation of $0.23.Construct a 99% confidence interval to estimate the population mean.
A)$3.03 to $3.23
B)$3.12 to $3.14
C)$3.05 to $3.21
D)$2.90 to $3.36
E)$3.06 to $3.20