Question

7 of 13 is complete HW Score: 21.67%, 21.67 of 6.4.15-E Question Suppose that an wirineuses a seat with of 16.1 inAsume men have hp breaths that are nomally distributed with a mean of 142 in and a standard deviation of 1.1 in Complete the (a) Find the probability that an individual manis randomly selected his breadth will be greater than 18.1 The probability is 00421 Round to four decimal places as needed) (h) If a plane is filed with 122 randomly selected men, find the probability that these have a mente de than 18.16 The probability to (Round to four decimal places as needed)

Answer 1

a)

probability =P(X>16.1)=P(Z>(16.1-14.2)/1.1)=P(Z>1.73)=1-P(Z<1.73)=1-0.9582=0.0418

b)

std error=σx̅=σ/√n=

0.0996

probability =P(X>16.1)=P(Z>(16.1-14.2)/0.1)=P(Z>19.08)=1-P(Z<19.08)=1-1=0.0000