For each of the following eight exercises, identify: a. the population,
b. the sample,
c. the parameter,
d. the statistic,
e. the variable, and
f. the data.
Give examples where appropriate. 42.
A fitness center is interested in the mean amount of time a client exercises in the center each week. 43. Ski resorts are interested in the mean age that children take their first ski and snowboard lessons. They need this information to plan their ski classes optimally.

Answer and explanation:

42. Statistic :A fitness center is interested in the mean amount of time a client exercises in the center each week

Statistic:the mean amount of time is an example of a statistic

Population:

43. Parameter :Ski resorts are interested in the mean age that children take their first ski and snowboard lessons. They need this information to plan their ski classes optimally.

Parameter: this is a number or measurable quantity that sets a condition, boundary or limit or scope such as the age in which children start snowboarding

typically if you want , you would actually put questions here for us to you. but hey, that's just me. maybe someone will magically answer the questions for you without knowing what they are.

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9