The following frequency histogram presents the weights in po

The following frequency histogram presents the weights in pounds (lbs) of 50 visitors to a health clinic. Answer the following questions based on this graph.

A) How many visitors weigh more than 160 pounds?                               ______________

B) What percent of visitors weigh less than 140 pounds?                        ______________

C) How many visitors weigh at most 170 pounds?                                     ______________

D) In what range of weights does the median of the distribution lie?   ______________

E) Describe the shape of this distribution. _____________________________________________

Solution

for the question we just need to see the graph that you have in the problem

1) more than 160 means 160 , 170 , 180 ,190 200

and the total of visitors for more than 160 pounds is 26

2) less than 140 is 140 , 130 , 120 , 110 ,100

and the total of visitors of less than 140 pounds is 11

but as the question is the percent we need to divided by the total of the visitors that is 50

so the percentage will be 11 / 50 *100% = 0.22 = 22%

c)

at most 170 that means less than 170

so the total of visitors weigh at most 170 pounds is 38

D)

the range of weights where the median of the distribution lie is 160 - 170 because is the column with more data

E)

the shape of this distribution is almost like a normal distribution because we have more data in the middle, and

in the extrems we hve a few data