Mathematics, 14.12.2020 21:30, valejuan
Select the correct answer.
The data manager for a state political party gathered data to determine how many citizens would support the party’s senate candidate. He polled citizens in 30 similarly sized senate districts and found a sample mean of 70,438 citizens. Statewide data shows that the population standard deviation is 645.3. What is the approximate 90% confidence interval for this situation?
A.
70,134 and 70,742
B.
70,244 and 70,632
C.
70,403 and 70,473
D.
70,207 and 70,669
Answers: 3
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