A sunflower is 3 inches tall and grows 1 inch per week. A rose bush is 4.5 inches tall and grows 0.75 inches pe week. Choose an inequality to show how many weeks, w, it will take for the sunflower to be taller than the ro
bush

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.