7 Select one a 237 b 9 c 262 d 1187SolutionCritical Value Z2

7)

Select one:

a. $237

b. $9

c. $262

d. $1187

Solution

Critical Value Z_/2 = 2.576

steps for calculating the margin of error for a sample mean:

using step2 , 874/sqrt[74] = 101.6

using step3 , Margin of error E= 101.600*2.576 = 261.7 = 262$ approximately

Answer is option C , $262