The international air transport association surveys business travelers to develop quality ratings for transatlantic gateway airports. the maximum possible rating is 10. suppose a simple random sample of 50 business travelers is selected and each traveler is asked to provide a rating for the miami international airport. the ratings obtained from the sample of 50 business travelers follow. 6 4 6 8 7 7 6 3 3 8 10 4 8 7 8 7 5 9 5 8 4 3 8 5 5 4 4 4 8 4 5 6 2 5 9 9 8 4 8 9 9 5 9 7 8 3 10 8 9 6 develop a 95% confidence interval estimate of the population mean rating for miami. (round your answers to two decimal places.)

M = 6.34, 95% CI [5.7468, 6.9332].

You can be 95% confident that the population mean (μ) falls between 5.7468 and 6.9332.

Step-by-step explanation:

Calculation

M = 6.34

Z = 1.96

sM = √(2.142/50) = 0.3

μ = M ± Z(sM)

μ = 6.34 ± 1.96*0.3

μ = 6.34 ± 0.5932

Check the attached file for more explanation

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have