Is 1.75 a reasonable estimate of the value of the square root of 8

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

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.