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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.
To find out whether the course is effective in increasing sales, the appropriate set of hypothesis for testing is:
An experiment was conducted to determine the effects of three different pesticides (P1,P2,P3) on the yield of three different varieties of citrus tree (V1,V2,V3).
Determine for each variable if it is the explanatory variable, the response variable, or whether it could be both.
Describe and analyze your quantitative data and Briefly address the data analysis process.
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.
The Wilcoxon signed rank test is computed for the data and gives a value W + = 161.5. Using the Normal approximation (without the continuity correction) the P-value.
If the mean times for both George and Julia are actually the same, what is the probability that George will be let go?
Find out optimal decision
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
What is the probability the average of the sample is more than $38000 and What is the standard deviation of the sample mean
Construct a grouped frequency distribution using six classes.
Mean and standard deviation are 584.6 and 34.28
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