Refer to the accompanying data display that results from a sample of airport data speeds in mbps. complete parts (a) through (c) below. tinterval (13.046,22.15) x overbarequals17.598 sxequals16.01712719 nequals50 a. express the confidence interval in the format that uses the "less than" symbol. given that the original listed data use one decimal place, round the confidence interval limits accordingly. 13.05 mbpsless thanmuless than 22.15 mbps (round to two decimal places as needed.) b. identify the best point estimate of mu and the margin of error.

a. -0.3 > -0.33

. + λrh() e 1 1 2 4 4 4 4 4 3 4 4 4 4 4 + th−1(− s(x)2 dx ω + λrh−1() e 2 1 2 4 4

step-by-step explanation:

b.my answer is b.

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d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.