Direction: on a short bond paper, solve the following problems. Show your complete solution.I. INDEPENDENT SAMPLE T-TESTProblem 1: A pilot study was conducted to examine this hypothesis. Ten older adults (over the ageof 70) and ten younger adults (between 20 and 30) were given a life satisfaction test (known to havehigh reliability and validity). Scores on the measuring range from 0 to 60 with high scores indicativeof high life satisfaction; low scores indicative of low life satisfaction. Calculate if there is asignificant difference between older and younger adults on perceived life satisfaction. Use alpha at0.05.(Data as follows)(X2)?Younger Adults(Х)34NoOlder Adults(X1)?(X1)45120251156238221444484521527042254482723047295253762513696.3941152116817512426015768.461921163619.5526302567610463621161296Total445281204818553Mean44.528.1

Two sample t test : he 2-sample t-test (also called the freelance samples t-test) could be a applied…

Answered: on: on a short bond paper, solve the…

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter11: Data Analysis And Displays

Section: Chapter Questions

Problem 1CA

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The trend in home building in recent years has been to emphasize open spaces and great rooms, rather than smaller living rooms and family rooms. A builder of speculative homes in the college community of Oxford, Ohio, had been building such homes, but his homes had been taking many months to sell and had been selling for substantially less than the asking price. In order to determine what types of homes would attract residents of the community, the builder contacted a statistician at a local college. The statistician went to a local real estate agency and obtained the data contained in file OxHome. This data includes the sales price (measured in thousand dollars), square footage, number of rooms, number of bedrooms, and age for each of 60 single-family residences recently sold in the community. Using this data, a regression model was built to predict the sales price of houses in this community. The regression equation from the model is: sales price (thousand dollars) = 19.5 + 0.1079…
The trend in home building in recent years has been to emphasize open spaces and great rooms, rather than smaller living rooms and family rooms. A builder of speculative homes in the college community of Oxford, Ohio, had been building such homes, but his homes had been taking many months to sell and had been selling for substantially less than the asking price. In order to determine what types of homes would attract residents of the community, the builder contacted a statistician at a local college. The statistician went to a local real estate agency and obtained the data contained in file OxHome. This data includes the sales price (measured in thousand dollars), square footage, number of rooms, number of bedrooms, and age for each of 60 single-family residences recently sold in the community. Using this data, a regression model was built to predict the sales price of houses in this community. The regression equation from the model is: sales price (thousand dollars) = 19.5 + 0.1079…
The trend in home building in recent years has been to emphasize open spaces and great rooms, rather than smaller living rooms and family rooms. A builder of speculative homes in the college community of Oxford, Ohio, had been building such homes, but his homes had been taking many months to sell and had been selling for substantially less than the asking price. In order to determine what types of homes would attract residents of the community, the builder contacted a statistician at a local college. The statistician went to a local real estate agency and obtained the data contained in file OxHome. This data includes the sales price (measured in thousand dollars), square footage, number of rooms, number of bedrooms, and age for each of 60 single-family residences recently sold in the community. Using this data, a regression model was built to predict the sales price of houses in this community. The regression equation from the model is: sales price (thousand dollars) = 19.5 + 0.1079…
Find the quantity (deviance) for testing the hypothesis H0 and the pvalue used
Maria has two routes, E and W, she can take when commuting to work. Both routes go through a railroad crossing, and sometimes she needs to stop at the crossing to allow trains to pass. She claims that the proportion of times she needs to stop when taking route E is different from the proportion of times she needs to stop when taking route W. She conducted the following hypothesis test at the significance level of α=0.10. H0:pE=pWHa:pE≠pW In the hypotheses, pE represents the proportion of times she needs to stop at the crossing when using route E, and pWrepresents the proportion of times she needs to stop at the crossing when using route W. All conditions for inference were met, and the resulting p-value was 0.37. Which of the following is the correct decision for the test? The p-value is less than α, and the null hypothesis is rejected. There is convincing evidence to support the claim that the proportion of times she needs to stop at the crossing is different for the…
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Buford has generously offered to assist the Fireside Girls troop 46231 in their annual cheese sale. Last year, there was a significant amount of cheese left over due to patrons not picking up (and paying for) their orders. Buford feels that it's hard not to place an order when the Fireside girls come knocking on your door, but then there is less motivation to actually follow through with the purchase absent the sales pressure. Requiring a deposit at the time of order may help with this issue. The town of Danville has about 3000 potentially interested customers. The probability that a customer will place an order will decline as the required deposit increases, however, as the deposit amount increases, there is a higher probability that a customer who placed an order will actually pick up the cheese and pay the balance. The table in the spreadsheet shows that relationship. Note that these probabilities apply independently to all customers, and are not a blanket percentage of all…
Buford has generously offered to assist the Fireside Girls troop 46231 in their annual cheese sale. Last year, there was a significant amount of cheese left over due to patrons not picking up (and paying for) their orders. Buford feels that it's hard not to place an order when the Fireside girls come knocking on your door, but then there is less motivation to actually follow through with the purchase absent the sales pressure. Requiring a deposit at the time of order may help with this issue. The town of Danville has about 3000 potentially interested customers. The probability that a customer will place an order will decline as the required deposit increases, however, as the deposit amount increases, there is a higher probability that a customer who placed an order will actually pick up the cheese and pay the balance. The table in the spreadsheet shows that relationship. Note that these probabilities apply independently to all customers, and are not a blanket percentage of…

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