Answer to Question #331166 in Statistics and Probability for Strawberry

Question

1 A random sample of size 70 was used with a population standard deviation. of 15. Assuming that there is a 92% confidence level, what is the margin of error?

n =

σ=

Za/2 =

formula to be used:

solution:

2. Compute for the appropriate sample size needed if the margin of error is 15, with a population standard deviation of 43 and a 98% level of confidence.

E =

σ =

Za/2 =

formula to be used:

solution: