Question

state gasoline taxes a random sample of state gasoline taxes (in cents) is shown here for 9 states. round sample statistics and final answers to at least two decimal places.
48.9 42.1 64.2 43.6 43.5
42.1 55.5 47.2 39.2
send data to excel
part 1 of 2
use the data to estimate the true population mean gasoline tax with 90% confidence. assume the variable is norm y distributed.
42.45 < μ < 52.29
part: 1 / 2
part 2 of 2
does the interval contain the national average of 44.7 cents?
select, the national average of 44.7 cents select in the interval.

Explanation:

Step1: Analyze the confidence interval

The confidence interval is \(42.45<\mu <52.29\).

Step2: Check if the national average lies within the interval

The national average is \(44.7\). Since \(42.45 < 44.7<52.29\), the national average of \(44.7\) cents is in the interval.

Answer:

Yes, is