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A soft drink dispenser is designed to dispense 330 ml of drink per cup. However, there have been recent reports to the management of a fast-food restaurant of both underfilled and overfilled cups. Seeking to investigate this matter, they fill up 50 cups using this machine. If the mean amount of drink in the 50 cups is 325 ml with standard deviation of 20 ml, is there cause for concern for the management? Use a level of significance of 0.01.
Show completely the steps in testing the hypothesis. ( p-value method)
Describe the duration gap for interest rate risk measurement? Why duration a good approximation for interest rate risk?
A researcher is deciding whether to use a sample size of 100 or whether to increase the sample size to 200. Explain how this choice will affect the power.
the gre combined scores for students applying to an engineering schools graduate program are normally distributed with
Calculate the allowable axial compressive load for a bar of rectangular cross section that measures 1 in. by 2 in. and is 20 in. long.
Suppose that highway gas mileage rates for both of these cares are uniformly distributed over a range of 20 to 30 mpg. What proportion of these cars would fall into the 22 to 27 mpg range? Compute the proportion of cars that get more than 28 m..
Complete the tree diagram by filling in the missing path probabilities.- What is the probability that the car is repaired under budget, on time, and with company D?
A doctor whats to exam prior medical records in an attempt to estimate the proportion of juvenile valley fever cases
Suppose that the number of customers who enter a supermarket each hour is normally distributed with a mean of 570 and a standard deviation of 170.
An airplane manufacturer currently produces six models of airplanes for commercial sale. the airline that lauren works for is rapidly expanding and would like to purchase three airplanes of different models to service various routes.
Let X equal the number of cells activating the alarm when the temperature reaches 100_Fahrenheit. Find the probability that the alarm will function when the temperature reaches 100_F.
to test an herbal treatment for depression 100 volunteers who suffered from mild depression were randomly divided into
Is there an increasing or decreasing pattern? Explain what that means in terms of height and shoe sizes. Calculate the correlation coefficient, r. (3 decimal places)
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