A bowling alley has 10 lanes. During rush hour, the average inter-arrival time between groups of customers is 2 minutes, with a standard deviation of 1 minute. Each lane can handle one group at a time. The average time taken by a group at a lane is 18 minutes, with a standard deviation of 9 minutes. What is the average time a group of customers wait for a lane to free up, after arriving at the alley

the correct answer is b) histograms can be used to exhibit the shape of distributions. this is because histograms count the frequency of each possible answer, so one is able to see which results are more common and which are less common.

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm