Here are summary statistics for randomly selected weights of newborn​ girls: n=185​, x bar = 31.4 ​hg, s=7.5 hg. Construct a confidence interval estimate of the mean. Use a 95​% confidence level.

What is the confidence interval for the population mean μ​?

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

cosine

step-by-step explanation:

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

333.74 ! should be your answer for this question