An article in Nuclear Engineering International (February 1988, p.33) describes several characteristics of fuel rods used in a reactor owned by an electric utility in Norway. Measurements on the percentage of enrichment of 12 rods were reported as follows: 2.94 3.00 2.90 2.75 3.00 2.95 2.90 2.75 2.95 2.82 2.81 3.05 Construct a 99% interval estimate for the mean percentage of enrichment. Are you comfortable with the statement that the mean percentage of enrichment is 2.95%? Explain fully. Show all work for this problem!

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

step-by-step explanation:

there are 36 inches in a yard

25 : 36 = 0.69 yards (you can round to 0.70)

answer: apothems is your answer

step-by-step explanation: hope u get it right