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Suppose the proportion of female shoppers in a certain mall is 0.67. On a specific day, a store in the mall took a random sample of 180 shoppers and recorded the proportion of females in the samples. What is the standard deviation of the sampling distribution? (Use 3 decimal digits)
it is known that 20 of the applications received for a particular credit card are rejected. what is the probability
a business student argues that an mba student is required to prepare more than five cases per week. a statistics
The mean starting salary for college graduates in the spring of 2000 was$31,280. Assume that the distribution of starting salaries follows the normal distribution with a standard deviation of 3,330.
ECE/ECM Lab Exam - Probability and Stochastic models. Twelve recruits were subjected to a selection test to ascertain their suitability for a certain course of training. At the end of training there were given a proficiency test. Calculate coeffici..
The following are a sample of Motorola's stock prices in March 2007.- Find the mean and the variance, plot the data, determine outliers, and construct a box plot.
Transcontinental Airlines maintains a computerized forecasting system to forecast the number of customers in each fare class who will fly on each flight in order to allocate the available reservations to fare classes properly.
A rare disease has just broken out. Doctor Johnson is trying to help, but while treating patients he might expose himself to the disease.
What are the degrees of freedom for a simple linear regression model? Explain the meaning of coefficient of determination.
the metal body for a spark plug is made by a combination of cold extrusion and machining. the occurrence of surface
a. State a null hypothesis about the proportion of even digits if the table is random. b. State an alternative hypothesis that would indicate a lack
The latter is a random variable (any function of a random variable is a random variable). So what"s the corresponding fact about conditional expectation?
Peter and Ray built a bike ramp from 20 sheets of 4ft. X 8ft. plywood and propped it up on one end with some bricks. The finished ramp is rectangular. Show 3 ways they might have arranged the wood and give the measurment for each side.
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