An administrator in charge of undergraduate education on a large campus wanted to estimate the average number of books required by instructors. Using bookstore data, she drew a random sample of 15 courses for which she obtained a sample mean of 3.2 books and a sample standard deviation of 0.5. Construct a 99% confidence interval to estimate the mean number of books assigned by instructors on campus. Write a concluding statement.

Q: т 1 Let A = (6 "). m Find A4 1

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Q: 3/20 + 13/15 combine.

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Q: 3.5(0.3x-1.5y)-4(0.2x-1.2y)

A: According to question,Given expression,3.50.3x - 1.5y-40.2x-1.2y

Q: 3 3 x-5 1 322

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Q: C3x2 + – 4 kx - 5x- 6.

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Q: n is the same as 239 added to the product of 238 and z

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Q: -7 5 1 9 0 -2 -1 2 -1 4

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Q: 10 14 9.) Find O 18

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Q: 4. 3*+4 72x-1

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Q: 3. A box contains 60 yellow marbles, 110 blue marbles and 90 green marbles. If you pick one marble…

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Q: 6 2/5 + 1 3/10

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Q: Picking a blue marble three times in a row (replacing it in the bag each time) from a bag of 4…

A: Solution: Given data, Picking a blue marble three times in a row (replacing it in the bag each time)…

Q: 4 1 4. |x2ydxdy 2 0

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Q: +–3m+–9m+4+5+–10m

A: The expression is given as 1+–3m+–9m+4+5+–10m. Simplifying the given expression. 1+–3m+–9m+4+5+–10m…

Q: Let Mbe as in Equation (3.14) and let X = [1, 0, ½]¹. Show that the entries of Y=MX sum to 1.

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Q: A 2/15 B 30 V35 5 20

A: Given,  A circle with secant and tangent  We have to find the value of x

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Q: 1/4 +5/4

A: Solution: The objective is to find the value of the given expression

Q: 6 2/5 ÷ 4

A: Given query is to solve the expression.

Q: i 15Y4 + 32X+ 23x?+ 25X-3

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Q: 2. 9=x-2y 3x + 5 = 2y

A: The given equations are system of linear equations in variables x and y. We solve these by…

Q: Find A

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Q: 8. B (6,7) (13,7) |(0,2) 10 12 14 My friend had a nearly-empty tank of gas, only enough to travel 15…

A: We have to find that the gas is enough or not to reach at point C.

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A: ∠ABD=x°∠ACD=27°∠ABD and ∠ACD are in same segment.

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Q: 5 2/5+ n= 75/6

A: Given query is to find the value of n.

Q: x is a whole number = ¤ is a natural number. f humans have six eyes, then they can see in (10, V5, 2…

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Q: 2/5 +7/12

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Q: 13. Divide. (2? + 9x – 52) ÷ (x – 4) x + 13 0.-+ 1 – 4 + 4 O++13+ 4 2 x - 4

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Q: y - Sy = 0

A: The given differential equation is: y''-5y=0

Q: 35-40 Coterminal Angles? The measures of two angles in standard position are given. Determine…

A: NOTE: Refresh your page if you can't see any equations. . two angles are coterminal if the…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.