Weights of Minivans The average weight of 40 ran- domly selected minivans was 4150 pounds. The popula- tion standard deviation was 480 pounds. Find a point es- timate of the population mean. Find the 99% confidence interval of the true mean weight of the minivans.

99% confidence interval of the true mean weight of the minivans

(3954.192 ,4345.808)

Step-by-step explanation:

step(i):-

Given sample size 'n' = 40

mean of the sample  x⁻ = 4150 pounds

Standard deviation of the Population 'σ' = 480 pounds

Critical value:-

step(ii):-

99% confidence interval of the true mean weight of the minivans

(4150 - 195.808 , 4150 + 195.808)

(3954.192 ,4345.808)

Conclusion:-

99% confidence interval of the true mean weight of the minivans

(3954.192 ,4345.808)

answer is 67%

step-by-step explanation:

step-by-step explanation:

their are no angles. sorry cant .