Kizspy | Question: 20
(Choose 1 answer)
Let Z0.05 1.65, Z0.025 = 1.96,to.05,91.83, to.025,9 = 2.26.
A random sample of 10 parking meters in a beach community showed the following incomes for a day.
3.60 4.50 2.80 6.30 2.60 5.20 6.75 4.25 8.00 3.00
A simple computation yields a sample mean of 4.7 and standard deviation of 1.8. Assume the incomes are normally distributed.
Find the 95% confidence interval for the true mean.
Α. (4.81, 6.31)
Β. (3.41, 5.99)
C. (1.35, 2.85)
D. (2.11, 5.34)
E. None of the other choices is correct
