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A test performed in 2005 determined that the mean triglyceride level for 71 retirees ages 60 thru 70 was 168 mg/dl with a standard deviation of 27 mg/dl. A second study came up in 2008 with mean measurement of173.7 mg/dl with the same standard deviation. Create a hypothesis and perform a series of tests to determine if there is any fundamental difference in the findings.
Using the probabilities above what is the expected size of family you draw?
LSAT scores are normally distributed, with a mean of 150 and s = 10.
Why is it misleading to draw the conclusion from the test above that long-time exposure to cadmium reduces the vital capacity?
For the data shown below, prepare a x-bar chart. Note that the sample size is three. Record the values for the UCL, center line, and LCL. In addition, note any points that are out of control.
Find at least what percentage of all homeowners in this city pay a monthly mortgage of 865 to 1,675.00.
When using past data, I have found that the proportion of items rejected by quality control personnel is about 3%. We normally make 5000 items per day. For a p chart, what are the upper and lower control limits?
Which statement is true for a statistical study?
Morality Study for a group of four men, the probability distribution for the number x who live through the next year is as given in the accompanying table.
A game involving a pair of dice pays you 3 with probability 17/36, costs you 2 with probability 14/36, and costs you 4 with probability 5/36. What is your probability of losing money in one play of the game?
Internal study by Technology Services department at Lahey Electronics disclosed company employees get the average of 2 emails per hour. Suppose arrival of these emails is approximated by Poisson distribution.
Data on distribution of cost for building effort, design work and testing effort.
Solve different inventory control problems using an appropriate OR method.
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