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A bank holds the mortgage on a motel which the motel owner says has an average daily revenue of at least $2,038. In the event the average is not at least $2,038, the bank will ask the motel owner for additional collateral for the loan as protection against loan default. A loan officer is aware that the daily average revenue is normally distributed and randomly selects 20 days during the last six months. The sample has a mean of $2,001 and standard deviation of $150.00. At the 0.01 level, is the bank loan financially sound (should the bank ask for additional collateral)? What is the decision rule?
Do these results suggest that the racial makeup of the faculty members is different from that of the students? (Use the .05 significance level.)
High School GPA is normally distributed with a mean of 3.06 and a standard deviation of 0.40. The probability of a randomly chosen student having a HS GPA between 3.54 and 3.80 is
A statistically significant result occurs when the value of the test statistic falls in the rejection region. A result has practical significance when it is statistically significant
Exponential distribution with a mean of 4 minutes. What is the probability that a person is served in less than 3 minutes on at least 4 of the next 6 days.
Given the following data, calculate the EMV for each investment alternative. Which is best based on the EMVs you calculated?
In some places in the US, people are aware of the need for more care for older citizens, like Dr. Hope. In the election in one area, they put forward a referendum that would increase the county sales tax by one cent to pay for increased services f..
Calculate the limits within which the weight of the packets should lie assuming that the machine is not been classified as faulty.
What is wrong with only inspecting the peaches on the top of the barrel? How could you improve your inspection process?
A currency trader observes that in the spot exchange market, 1 U.S. dollar can be exchanged for 9 Mexican pesos or for 111.23 Japanese yen. What is the cross-exchange rate between the yen and the peso
Assume that the duration of human pregnancies can be described by a normal model with mean 268 days and standard deviation 17 days. What percentage of pregnancies should last between 260 and 270 days?
A random sample of 72 statistics students was taken to estimate the proportion of students who are also in the Math Club. The 90% confidence interval was 0.438 to 0.642. Using this information, what sample size would be necessary to estimate the t..
Solve the following system of linear inequalities by graphing.
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