Probability and Statistics
Lesson 3.2 Practice Exercises
1. Sampling Mall Shoppers - You have probably seen the mall interviewer, clipboard in hand,
approaching people passing by. Explain why even a large sample of mall shoppers would not
provide a trustworthy estimate of the current unemployment rate in the city where the mall is
located. Is the proportion of unemployed people in the sample likely greater than or less than the
proportion of all people who are unemployed?

heudhduxhdnshenebdutbbt

step-by-step explanation:

hrhhdhdbbrurb ees

the length of o'p' is .

step-by-step explanation:

it is given that the quadrilateral m'n'o'p' is the image of quadrilateral mnop after dilation.

the center of dilation is origin and the scale factor is 1.5.

in dilation the image and preimge are similar figures. it means the sides of image and preimage are proportional.

the scale factor is defined as

the scale factor is 1.5.

multiply both sides by op.

note: if the value of op is given, then multiply the value of op with 1.5 to get the length of side o'p'.

therefore length of o'p' is .

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: