What is the interquartile range of this data? a. 6 b. 7 c. 8 c. 9 box-and whisker plot titled temperatures in celsius ranging from 12 to 48 with the five number summary from left to right 18, 25, 28, 33, and 42

What is the prime factorization of 23 ?me with this question

What is a correct first step in solving the inequality-4(3-5x)> -6x+9

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.