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The Crossett Trucking Company claims that the mean weight of their delivery trucks when they are fully loaded is 6,000 pounds and the standard deviation is 150 pounds. Suppose that the population follows the normal distribution. Forty trucks are randomly selected and weighed. Within what limits will 95 percent of the sample means occur?
Formulate the hypotheses to determine whether or not the lathe is in perfect adjustment.
Determine relative frequency of X=4? Generate the cumulative frequencies.
A month of sales data are collected on sales of different types of computer products Run the t-tests to determine:
The probability of drawing a 6 (to complete an inside straight) after discarding the ace.
Conduct an analysis of variance
The main part of the ACS contacts 250,000 addresses by mail each month, with follow-up by phone and in person if there is no response. Each household answers questions about their housing, economic, and social status. What is the Population.
The following is the number of minutes to commute from home to work for a group of automobile executives.
Data on distribution of cost for building effort, design work and testing effort.
Linear programming problems. Computethe following linear programming problem. Among which of the following points (X,Y) is feasible.
A random sample of 100 oranges is gathered and the mean diameter obtained was 5.12. If another sample of 100 is taken, what is the possibility that its sample mean will be greater than 5.12 inches.
He would like to determine whether there are more units produced on the afternoon shift than on the day shift.
Find out optimal assignment and calculate total minimum cost.
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