The mean number of flight hours for continental airline pilots is 49 hours per month. assume that this mean was based on a sample of 100 continental pilots and that the sample standard deviation was 11.5 hours. (a) calculate the margin of error for a 95% confidence interval. (b) calculate the upper bound for a 95% confidence interval.

Answer with explanation:

(a)

Mean number of flight hours for Continental Airline pilots = 49 hours per month

Total Sample Size =100

Standard Deviation =11.5 Hours

Margin of error for a 95% confidence interval

(b)

The Range of values for a 95% confidence interval

 ⇒     Mean number of flight  + Margin of Error  ≤  Confidence interval ≤    Mean number of flight  - Margin of Error      

⇒ 49+0.97  ≤  Confidence interval ≤ 49-0.97

⇒ 49.97  ≤  Confidence interval ≤48.03

Upper Bound = 49.97

15.5

step-by-step explanation:

5

∑

n = 1

substitute n = 1, 2, 3, 4, 5 and sum the terms

= + + + 2² + 2³

= 0.5 + 1 + 2 + 4 + 8

= 15.5

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.