Which is greater 4.027 or 4.0092

Find the circumference of a pizza with a diameter of 10 inches round to the nearest tenth

Grant simplified the expression 1.5(-3.2 + 2.5) his work is shown below explain the error in grants work

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.