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A marketing firm wants to estimate the average amount spent by patients at the hospital pharmacy. For a sample of 70 randomly selected patients, the mean amount spent was $58.72 and the standard deviation $7.60.
(a) Find a 90% confidence interval for the mean amount spent by patients at the pharmacy. Show your calculations and/or explain the process used to obtain the interval.
(b) Interpret this confidence interval and write a sentence that explains it.
Use differential to approximate square root of 16.3
Suppose that you are purchasing cases of wine and that periodically you select a test case to determine the adequacy of the bottles' seals. To do this you randomly select and test 3 bottles int he case.
Point out your final decision concerning hypothesis test and compute p-value for test.
One particular morning, the length of time spent in the examination room is recorded for each patient seen by each physician at an orthopedic clinic. Does the data prove a significant diference in mean times, using a=.05 Minutes in Examination roo..
The branch manager of a pet supply store wants to study characteristics of customers of his store. In particular, he decides to focus on two variables
Write the regression. Interpret the regression constant and regression coefficient. Forecast a value for monthly salary.
In the past, Judy Holmes's tire dealership sold an average of 1,000 radials each year. In the past two years, 200 and 250, respectively, were sold in fall, 350 and 300 in winter, 150 and 165 in spring, and 300 and 285 in summer.
Suppose that the probability is 1 in 3,900,000 that a single auto trip in the U.S. would result in the death of the driver. Over a lifetime, an average U.S. driver takes 50,000 trips.
Please see the attached file for the fully formatted problems. Convert the following equations into logarithmic form:
Analyze a publicly traded company's financial statements for the prior five years. Include the following items as supplemental schedules to the analysis, prepared as individual worksheets
You can allow the cup to overfill 4% of the time. What amount should you set as the mean amount of coffee to be dispensed?
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience?
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