8-23. Air Transport World recently named the Dutch airline KLM "Airline of the Year." One measure of the airline's excellent management is its research effort in devel- oping new routes and improving service on existing routes. The airline wanted to test the profitability of a certain transatlantic flight route and offered daily flights from Europe to the United States over a period of 6 weeks on the new proposed route. Then, over a period of 9 weeks, daily flights were offered from Europe to an alternative airport in the United States. Weekly profitability data for the two samples were col- lected, under the assumption that these may be viewed as independent random samples of weekly profits from the two populations (one population is flights to the proposed airport, and the other population is flights to an alternative airport). Data are as follows. For the proposed route, x $96,540 per week and s $12,522. For the alternative route, $85,991 and s $19,548. Test the hypothesis that the pro- posed route is more profitable than the alternative route. Use a significance level of

Q: 1. 2+(9-4) 2. 2 (13+5-14+(3+4)) 3. 7+(12-3) 4.7+(12-3)-

A: 1. 2+(92 - 1) = 2+ (81 - 1) = 2 + 80 = 82     2. 2.(13+5-14÷(3+4)) =2.(18 -14÷7) = 2.(18-2) = 2.16 =…

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A: From the given figure, we have to find the angles of the triangles and height of the triangle.

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A: Given,

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A: We have to solve for z 8(5-z)/7=-z Now solve the equalities 8(5-z)/7=-z 8(5-z)=-7z 40-8z=-7z…

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A: Simply do the algebraically calculation and determine x.

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A: Given :   The graph of the function.   To find : The domain of the given graph.

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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.