PLEASE HELP ME!!!
Jenifer conducted a survey to find out what percentage of households across the city has a home theater system.
She randomly
called 200 households and found that 140 households have a home theater system.
Based on the results, Jenifer concluded that 70% of households in the city have a home theater system.
Select the statement that is true about Jenifer's conclusion.
A. Jenifer's conclusion is valid because the sample was biased.
в.
Jenifer's conclusion is not valid because she only considered the households in one city.
C.
Jenifer's conclusion is not valid because her sample size of 200 households is too small.
D.
Jenifer's conclusion is valid because the sample was random.