Suppose the company decided to allow the sales representatives to choose whether to participate in the field-training program or to opt out. There are 400 who have chosen to participate in the
field-training program and 600 who have opted out of the program. How might the self-selection
process affect the statistical validity of the comparison of the change in the proportion of sales
orders from new stores? Support your answer with a specific example

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this

answer: .75 km

step-by-step explanation: