Question #9
The population proportion is .70. What is the probability that a sample proportion will be within =or- 0.01 of the population proportion for each of the following sample size? Round to 4 decimals (use-z table)
What is the advantage of a larger sample size?
A simple random sample of 1,000 elements generates a sample proportion of p = 0.60
Provide the 90% confidence interval for the population proportion (to 4 decimals)
Provide the 95% confidence interval for the population proportion (to 4 decimals)
Compute f(0) (to 4 decimals)
Compute f(1) (to 4 decimals)
Compute P(x =< 2) (to 4 decimals) Compute P(x => 4) (to 4 decimals)
Compute E(x) (to 1 decimal)
Var (x) = 1.28
Compute Var(x) and alpha
Consider the following hypothesis test:
H 0: u = 16
H a: u (not equal) 16
A sample of 40 provided a sample mean of 14.14. The population standard deviation is 3.
What is the p-value (to 4 decimals)?