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# A Bank charges an overdraft fee if a customer does not have enough

Question A Bank charges an overdraft fee if a customer does not have enough money in a checking account to cover a check or a debit card withdrawal. A random sample of 12 banks resulted in the following data regarding overdraft fees.\$25.00 \$36.00 \$30.00 \$20. \$15.00 \$20.00 \$30.00 \$35.00 \$10.00 \$36.00 \$25.00 \$20.00.So basically I need an answer to these three questions:Construct a 90% confidence interval for the population mean overdraft fee at banks and provide an interpretation of your interval.Construct a 95% confidence interval for the population mean overdraft fee at banks and provide an interpretation of your interval.Construct a 99% confidence interval for the population mean overdraft fee at banks and provide an interpretation of your interval

## Forty adult males volunteered to participate in an experiment. Half

Question Forty adult males volunteered to participate in an experiment. Half of them are randomly assigned to take a caffeine supplement before working out, and the other half are assigned to take a placebo before completing the same workout. During the workout, heart rate monitors will be used to measure each participant’s heart rate. The study found that those who took a caffeine supplement had significantly higher average pulse rates during the workout. What conclusion can be drawn from the study?

## Diverticulitis is a common intestinal ailment. To test a new medication,

Question Diverticulitis is a common intestinal ailment. To test a new medication, a hospital takes 50 volunteers who have a moderate case of the disease. The volunteers are randomly assigned to two treatment groups, one receiving the old medication and one receiving the new medication. The pills are distributed in unmarked pill form so that the patients and medical professionals do not know which medication the patient is taking. Which of the following statements is/are true?I. If the results show that the new medication is significantly more effective than the old medication, we can conclude that the new medication will be more effective for all people that have a moderate case of the disease.II. The group receiving the old medication serves as a control group. III. This is an example of a double-blind experiment.

## The table below lists the number of games played in a yearly​ best-of-seven

Question The table below lists the number of games played in a yearly​ best-of-seven baseball championship​ series, along with the expected proportions for the number of games played with teams of equal abilities. Use a 0.05 significance level to test the claim that the actual numbers of games fit the distribution indicated by the expected proportions.Games Played4567 Actual contests1919222223233737Expected proportiontwo sixteenths216four sixteenths416five sixteenths516five sixteenthsCalculate the test​ statistic, chi squared(Round to three decimal places as​ needed.)=Calculate the​ P-value. ​(Round to four decimal places as​ needed.)=What is the conclusion for this hypothesis​ test?A.RejectReject Upper H 0H0. There is insufficientinsufficient evidence to warrant rejection of the claim that the actual numbers of games fit the distribution indicated by the expected proportions.B.Fail to rejectFail to reject Upper H 0H0. There is sufficientsufficient evidence to warrant rejection of the claim that the actual numbers of games fit the distribution indicated by the expected proportions..C.RejectReject Upper H 0H0. There is sufficientsufficient evidence to warrant rejection of the claim that the actual numbers of games fit the distribution indicated by the expected proportions.D.Fail to rejectFail to reject Upper H 0H0. There is insufficientinsufficient evidence to warrant rejection of the claim that the actual numbers of games fit the distribution indicated by the expected proportions.

## A.Which of the following is NOT a part of creating a sampling distribution? Chose one

Question A.Which of the following is NOT a part of creating a sampling distribution? Chose one of the numbers 1.Conducting a hypothesis test to see if the sample means are different from one another2.Creating a histogram using the sample statistics from the different samples3.Collecting many samples from the same population4.Calculating a sample statistic for each sampleB. Suppose scores on a measure of ‘risk taking behavior’ are normally distributed with a mean of 41. Which of the following would be true for the sampling distribution of the mean for this variable?1.It would be normally distributed but it would not have a mean of 41 exactly2.It would not be normally distributed and it would not have a mean of 41 exactly3.It would not be normally distributed, but it would have a mean of 41 exactly4.It would be normally distributed with a mean of 41 exactlyI need help with both please

## -Suppose you take many samples of 81 people each from a population

Question
-Suppose you take many samples of 81 people each from a population with a mean of 100 and a standard deviation of 18. The standard error would be equal to ______.A.18B.5c.14d.2 2.A researcher is worried about “burnout” and is studying the length of time people work in a particular social worker position before changing careers. She finds that, in the whole population, people work an average of 6.2 years at this position, with a standard deviation of 3 years. Suppose she takes samples of 4 people per sample, and creates a sampling distribution. 68% of all samples will have means between _______ and _______.A.5.5 and 6.9 yearsB.4.7 and 7.7 yearsC.There is not enough information given in this exercise to answer the question.D.3.2 and 9.2 yearsPlease can you help me with both

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