6. The standard deviation for the data in the table is 4.79. For a confidence level of 95%, what is the margin of error? _

What is the interval estimate? ( _, _) (Round all answers to the nearest hundredth.)

Answer is + or - 9.58 and (40.30, 58.46) but please do the work for it!

What value of x is in the solution set of 4x – 12 s 16 + 8x?

The answer is 7.2 how would you put this as money

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.