Question

QUESTION 11 Find P(1.21szs1.37) (Round your answer to four decimal places ) QUESTION 12 Find Pz-1.61) (Round your answer to four decimal places) QUESTION 13 Assume that x is a normally distributed random variable with a mean of 70 and a standard deviation of 10 Find (x70) Find P(70kxx82) Find P(67x<93) Find (x<48) A 0.0139 B.0.3849 C. 0.6072 D. 0.5000 QUESTION 14 Calculate the z-score of the sample mean x bar, given that 515; when ?: 38, 3.m# 60 and x bars 500 O 2.02 -3.03 ?-202 O 3.03

Answer 1

ieh sint z table 6.9112-0.8869 using ztab le О. 9462 standard deviation 6-10 6

6 Using z table O. 8849-0:5 oPtion B is cosrect I. O 6 I o Usntable 0. 9893-0.3821 ニ 6022

p(222) sing tob le otton A is comrect aiven that 6=38.3 38.3 1.160 44.914 oPhon is coszeetf