A bank is considering a marketing campaign that wouldurge parents of preschool children to start college savingsprogram, targeting families with annual incomes above$40,000. Bank officials will proceed with the campaignonly if it appears that at least 10% of such families mightbe interested. When a pilot test presented the campaign materials to a random sample of 200 parents, 26 ex-pressed some interest in the college savings plan. a) At the 5% level of significance, do these sampleresults provide evidence that the bank should pursuethe marketing campaign?b) Describe two ways that the bank could increase thepower of the test, and explain a disadvantage of each.

Q: Suppose a quarterback’s completion percentage for the season is 67.2%. Based on relative frequency,…

A: 67.2% time quarterback complete a pass.  So, the probability that quarterback will complete a pass =…

Q: A 2016 Pew Research poll found that 18% of cell phone owners use their phone for conducting…

A: It is given that the total number of cell phone uses are 18%, thus the population proportion is…

Q: An article in The Wall Street Journal implies that exactly half of all Americans would prefer being…

A: Answer:From the given data,Sample size (n) = 1040 respondentsSample proportion…

Q: 4. Failure to meet payments on student loans guaranteed by the United States (U.S.) government has…

A:

Q: The American Association of lIndividual Investors (AAII) On-Line Discount Broker Survey pols members…

A: (a) Procedure to obtain scatterplot using Excel: Enter the data in an excel sheet. Select the data…

Q: Ten years ago, 35% of a brokerage firm’s clients only had a single account, 25% had 2 accounts, and…

A: Solution: Given information:  n= 300 Sample size of clients k= 3 Categories  P1= 0.35 Probability of…

Q: An organization published an article stating that in any one-year period, approximately 7.5 percent…

A: It is given that n=100 and p=0.075.

Q: In a telephone survey of 1100 adults, 740 adults expressed concern about the future health of social…

A:

Q: . Failure to meet payments on student loans guaranteed by the United States (U.S.) government has…

A: The single proportion  binomial test is used to compare a proportion  of responses or values in a…

Q: Stock screeners are automated tools used by investment companies to help clients select a portfolio…

A: Given data: 9.0   -0.1   -1.6   14.6   16.0   7.7   19.9   9.8   3.2   24.8   17.6   10.7   9.1…

Q: 4) A survey investigates whether the proportion of 8% for employees who commute by car to 4). work…

A: Given population proportion = 8% n=1000 sample proportion = 12% To test appropriate hypothesis

Q: A local newspaper conducted a study of the welfare claims in the area. It reported that at least 25%…

A:

Q: In an October 2003 poll conducted by the Gallup organization, 684 of 1006 randomly selected adults…

A: Point estimate:The point estimate of population proportion is sample proportion.

Q: vouchers are improperly documented. In your job as an auditor, you conduct a random sample of 100 of…

A: Sample size n=100Sample proportion p^=0.3

Q: TransUnion is a leading global provider of business intelligence services. Transunion reported that…

A: Solution:Binomial distribution approximated to normal distribution or not is checked below:It is…

Q: Gallup surveyed adult Americans about their consumer debt. They Reported that 47% of millennials and…

A: Given information: Proportion of millennials who did not pay off their credit cards p1=0.47…

Q: 3. company claims that at least 60% are mailed within 48 hours. From time to time the quality…

A: Rules to construct hypothesis :- we know that null hypothesis always contain sign ≤, ≥,=and…

Q: According to the IRS, individuals filing federal income tax returns prior to March 31 received an…

A:

Q: Suppose a follow-up study consisting of personal interviews is to be conducted to deter- mine the…

A:

Q: In December 2001 the research firm GfK surveyed babyboomers (Americans born between 1946 and…

A: Here, n=1006, p=0.71, and margin of error is 0.03.

Q: 4. Women athletes at a university have a long term graduation rate of 67%. Over the past several…

A:

Q: Test whether a majority of Kansas residents planned to set off fireworks on July 4th. In other…

A: Testing of population proportion is used here which is a binomial test that compare a proportion of…

Q: Twittering away The Pew Internet and American Life Project asked a random sample of 2253 U.S.…

A: Given Information: Sample size n=2253 Sample proportion p^=0.19

Q: Government officials in a district that's been notorious for low voter turnout start up a program to…

A:

Q: A random sample of 150 mortgages was selected. From this sample, 17 were found to be delinquent on…

A: A confidence interval is a statistical concept that has to do with an interval that is used for…

Q: In 1995, it was determined that 78% of US citizens supported a ban on household aerosols.  Thinking…

A: Given,  p = 0.78 n = 400 x = 332 Asssume α = 0.05

Q: c). Construct a 95% confidence interval for the difference in the actual average number of days to…

A: The given data is based on the customer takes number of days to make payment of last bill under the…

Q: ailure to meet payments on student loans guaranteed by the United States (U.S.) government has been…

A: Given,  α = 0.01 x=147 n=350 p=0.5 Hypothesis: H0:p=0.5H1:p≠0.5 The test is two tailed. Sample…

Q: (a)  Do you think that the percentage of all American movie-goers who think the popcorn is…

A: Given that 12% of a random sample of 25 American movie-goers thought the popcorn sold at the movie…

Q: i). Write the null and alternative hypotheses. ii). Give the value of the F statistic and the…

A: The data is given on the average debt at graduation for various schools in four selected states. No.…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.