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Q1) Normal distribution has mean of 80 and standard deviation of 14. Find out the value above which 80 percent of values will occur.
Q2) Monthly sales of mufflers in Richmond, Virginia, area follow normal distribution with a mean of 1,200 and standard deviation of 225. Manufacturer would like to create inventory levels such that there is only a 5% chance of running out of stock. Where the manufacturer must set inventory levels?
Of the nine members of the board of trustees of a college, five agree with president on a certain issue. The president selects three trustees at random and asks for their opinions. What is the probability that at least two of them would agree with..
Concept of statistical signi cance
Robinson & Associates performs employment screening for large companies in southern California. It usually follows two-step process. First potential applicants are given a test that covers basic knowledge and intelligence. If applicants score b..
What is the 95% confidence interval for the proportion of all delinquent customer accounts at this manufacturing company?
Statistics is science of conducting studies to: Solve a system of equations.
Draw a simulation experiment for car agency and simulate using fleet of four rental cars for 10 days.
An advantage of the permutation test over the t test for a difference in means is that - distribution interval or a bootstrap percentile interval
To test whether there is a significant mean difference among the three.
A random sample of 48 managers of large hotels has mean X‾= 5.91. The null hypothesis for the researcher's test is?
What is the probability that the drug will be effective for 3 hours or more?
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, & 10.
To determine the efficiency of the current ticket operation, Mike wishes to examine several queue operating characteristics.
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