An automobile manufacturer needs to estimate the average highway fuel economy (miles per gallon) for a new truck that will be sold starting next year. A random sample of 101 trucks were tested for highway fuel economy and the sample had a mean of 33.5 miles per gallon with a standard deviation of 2.2 miles per gallon. Using a 95% confidence level, determine the margin of error, E, and a confidence interval for the average highway fuel economy of this new truck. Report the confidence interval using interval notation. Round solutions to two decimal places, if necessary. The margin of error is given by E = A 95% confidence interval is given by Question Help: Video

Q: 2. Let A = 201-18 and /= 2 1 1 2 01 Find A(A+1).

A: A=[2 1      1 2]I=[1 0      0 1]

Q: 5 x − 2 ≤ 3 x + 4 A N D 3 x − 4 ≥ 2 x + 1

A:

Q: Find the mode for this list of numbers 33 28 27 30 63 89 52 36 27 9 92 56 42 67 88 Mode = Δ о ㅁ J

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Q: In (Z24, €) find the orders of the elements 3, 4, 6, 7, and 18.

A: Hey, since there are multiple questions posted, we will answer the first question. If you want any…

Q: 1 L [s² +2s+5)

A: Let's find.

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A:

Q: 7.) 10² - 15i*

A:

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A:

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A: Given: The matrix P=4611 and Q=22341-120 a) Find the size of the matrix QTP-1 b) Find the entry 2,1…

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A: The vectors:

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A:

Q: 1 Ita Į = ab

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Q: 1. (a) Prove that if alb and alc. then alb² + 10c + a.

A:

Q: Let a = (5, – 3, 6) and b = (5, 3, 4). (a – 6) × (ã + 6) -| X (a +

A: Given: a→=5,-3,6and b→=5,3,4

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Q: 12 + 22,., +n? =n(n+ 1)(2n + 1), Vn eN

A: We will prove this as following.

Q: Compute. 13 2) Σ k

A: Given, ∑k=113k2

Q: 3) Find integers x and y such that 13x + 15y = 1.

A: We see, 15 - 13 = 2              => k(15 - 13) = 2k for any integer k              => 15 k -…