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When an ANOVA comparing the means of 3 groups indicates that at least one group is different from the others, a common follow-up analysis to
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a survey of stock market investors revealed 30 % of individual investors have used a discount broker. i a random sample of nine individual investors....
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18 Items were randomly selected from a large inventory. If 40% of the items in the inventory are made in Asia 1. What is the probability that exactly...
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http://www.google.com/url?
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Lifespan for male grizzly bears is estimated at 22 years.
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Shown below is a portion of an Excel output for regression analysis relating Y (dependent variable) and X (independent variable). ANOVA / df / SS...
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A poll was taken every month on how voters will vote on the next federal election Sample Size Number of Voters Voting Liberal This month 750 300 Last...
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A crossover trial is planned to evaluate the impact of an educational intervention program to reduce alcohol consumption in patients determined to...
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In a completely randomized experimental design, 6 experimental units were used for each of the 4 levels of the factor (i., 4 treatments):
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Find the equation if the regression line for the given data.
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Let p_1 be the proportion of successes in the first population and let p_2 be the proportion of successes in the second population. Suppose that you...
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A real estate research firm has developed a regression model relating list price (Y in $1,000) with two independent variables.
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Assume the resting heart rates for a sample of individuals are normally distributed with a mean of 85 and a standard deviation of 5 . Use the...
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Excel Objective Build an Excel model. If possible, automate an existing work pro. Take and improve an existing collection of work spreadsheets.
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heights of men on a baseball team have a bell shaped distribution with a mean of 176cm and a standard deviation of 7cm.
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Recall that " very satisfied" customers give the XYZ- Box video game system a rating that is at least 42.
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The average length of time customers spent on waiting at ABC Store's check-out counter before a new P. system was installed was 5.1 minutes.
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How should the value of m be chosen so that the probability that at least one defective item turns up is .90?
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Studentized Residuals When we compute the studentized residuals, Ti 32 V (I _ PX)i,iSSres/(n _ p _1)1 as long as n p 1 is large, then we claim that...
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Question 1. Sunfresh Markets made a $13,000.
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A survey showed that 23% of college students read newspapers on a regular basis and that 82% of college students regularly watch the news on TV.
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In an extensive study involving thousands of British children, Arden and Plomin (2006) found significantly higher variance in the intelligence...
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A statistician is investigating the charge that a minority group of workers is paid less-than-average wages.
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A machine to detect improper welds in a fabricating shop detects 80 percent of all improper welds, but it also incorrectly indicates an improper weld...
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69 A random sample of 70 houses revela the following: heated area of the houses in sg feet (mean) 1759 (std dev) 380 42 houses have central air.
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To determine the efficiency of a batch of electric motors, 10 motors are tested. The average efficiency of the sample is calculated to be 91.0% and...
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If a=0.19, and B=0.12, complete the following questions by inserting the appropriate probability of each.
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You want to rent an unfurnished one-bedroom apartment in Boston next year. The mean monthly rent for a random sample of 12 apartments advertised in...
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Determine the expected count for each outcome. Data: i pi 1 0.13 2 0.36 30.24 4 0.
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Suppose a multiple regression model is given by y = 1.12 x1 6.14 x2 25.54. What would an interpretation of the coefficient of x1 be?
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As concrete cures, it gains strength. The following data represent the 7-day and 28-day strength in pounds per square inch (psi) of a certain type of...
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The Dean's Office at Hendrix College gave the following information about numbers of majors in different academic areas:
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The Eiffel Tower in Paris opened a gift shop, the manager of the gift shop wants to manage the inventories of the gift shop because he is having...
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A candidate receives 60% of the N votes in an election, where N is very large, like a million. Compute the probability that he leads after a count of...
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chapter 12 what are the main drivers of uk banks' profitability? what are the implications of increased concentration in the uk banking market?
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Let A be an m n real matrix. Show there exist orthonormal bases for Rn and Rm with respect towhich the linear transformation T :
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Bobby Mae Hasbrook Huffelpuffer is one top sales people at "You Want It We Got It, Inc . " Ms . Hufflepufer intends to visit three prospects today .
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A Statistics Department is contacting alumni by telephone asking for donations to help fund a new computer laboratory. Past history shows that 80% of...
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-fit test? What are the differences/similarities between this test and an independent t-test? How do you know when to use one analysis over the other?...
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The LR Law Firm has 400 client accounts. An auditor plans to randomly sample 36 of these accounts to determined the proportion of accounts that are...
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A manufacturer of flashlight batteries took a sample of 13 batteries from a day's production and used them continuously until they failed to work.
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A close friend of mine became very ill and couldn't work for several months. Naturally, this put a big strain on his family financially.
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A mayor claims that the unemployment rate in his city is 4 %. Many people think that the unemployment rate is higher.
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Let the random variable Z have a standard normal distribution. Fill in the blanks. (Give your answers to four decimal places. P(Z1.42) is . P(Z2.35)...
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Independent samples taken from two malls provided the following information regarding purchases of their patrons:
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A bank analyst is studying the bank's loan portfolio to estimate the number of loans currently in default.
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A company with a large fleet of cars hopes to keep gasoline costs down and sets a goal of attaining a fleet average of at least 25 miles per gallon.
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Conduct a hypothesis test (using either the p-value approach or the critical value approach) to determine if the proportion of all business students
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Course: Res 342 Prof. Ren Quiones Date: 20110505_______ E-Test 1 (Hypothesis Test) Maximum Value (10 pts) I Solve showing the procedure in red.
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A telemarketer is trying two different sales pitches to sell a carpet cleaning service. For Sales Pitch I, he contacted 175 people and 62 of these...
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