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For a sample of 11 independent observations from a normal distribution of unknown μ and unknown variance σ2, the sample mean is 74.6 and sample variance is 2.2. What is the lower point of the 90% confidence interval for μ?
(1) 73.1206
(2) 72.8469
(3) 73.7896
(4) 73.9863
(5) 73.1167
If the rods' lengths produced by your line are normally distributed, with a mean equal to the target of 0.2 meters, and a standard deviation of 0.015m, what percentage of rods will be scrapped?
The lifetime of a 2-volt non-rechargeable battery in constant use has a Normal distribution with a mean of 516 hours and a standard deviation of 20 hours. The proportion of batteries with lifetimes exceeding 520 hours is approximately.
If statistically significant, do you think the difference is large enough to be important?
Pattern that most accurately represents mean, median and mode is?
Evaluate your histograms for any outliers in your data. Based on your evaluation of outliers, you may trim no more than 1% of the data contained in the data set. This must be done symmetrically (i.e., trimming no more than 0.5% off the top and 0.5..
Use Excel and the data to test whether the mean alcohol expenditures for UCM students is equal to that of SBU students using a 1 % level of significance.
If code is 4 random letters, and letters can be utilized multiple times, how many different possible codes are there?
If alternate hypothesis mention that m doesn't equal 4,000, determine the rejection region for the hypothesis test?
Create a 99% confidence interval estimate of population mean amount of paint included in a 1 gallon can.
Multiple comparison procedures are going to be done using the Bonferroni method with = 0.05. The value of t** is 2.4667. Which of the following is the appropriate conclusion from carrying out these multiple comparisons?
Leggo's pesto is make from a recipe brought to America by an immigrant ancestor the present generation refers to as Bisnonna Maria.
what is the chance the average contents of the cans will be less than advertised and what will be the standard deviation of the number of men who help at home, based on the first survey
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