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Suppose you have two sets of normal data (symmetric, bell-shaped distributions), both with a mean of 15. The variance for sample A is 2.5, and the variance for sample B is 5.7. Sketch the general shape of each of these distributions on a single plot.
the following statistics were found using the 23 gas prices submitted for the project.n 23macrx 3.25s 0.11in this
what is a 99 confidence interval on our estimate of mean if our sample of 40 observations with a sample standard
find the value ofnbsptnbspfor the difference between two means based on an assumption of normality and this information
1. estimation of mean monthly rentalsa suppose we consider the following data on monthly rentals 980 1230 1320 1440
If sales follow a normal distribution with mean = 70,000 and st. deviation= 5,000 per day, how many loaves should Amazing bake daily?
What is the probability that none of the three parents condones spanking as a regular form of punishment for their children? Give the mean and standard deviation of x. Interpret the results.
appliance alley sells super clean washing machine. demand for super machine averages 65 units per month. super clean
Write the claim as a mathematical sentence. Stating the null and alternative hypotheses, and identify which represents the claim.
according to a recent survey high school girls average 100 text messages daily the boston globe april 21 2010. assume
The trial failed to show significance. How many subjects would be required to detect the difference in proportions observed in the trial with 80% power?
The following data represents 15 quarters of manufacturing capacity utilization (in percentages) Evaluate three and four quarter moving average for this time series. Which moving average provides the better forecast for the fourth quarter of 2003?
the umuc daily news reported that the color distribution for plain mampms was 40 brown 20 yellow 20 orange 10 green and
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