Answer:
A
Step-by-step explanation:
because it is probability
103 would be the correct answer
The slope of the graph is 1/2
Answer:
651 is the minimum number of people over age 30 they must include in their sample.
Step-by-step explanation:
We are given the following information:
Confidence level = 90%
Significance level = 10%
Maximum error = 0.09
Variance = 1.96

Formula:

Putting all the values,


651 is the minimum number of people over age 30 they must include in their sample.