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The weights of a fish in a certain pond that is regularly stocked are considered to be normally distributed with a mean of 3.1 pounds and a standard deviation of 1.1 pounds. A random sample of size 30 is selected from the pond and the sample mean is found to be 2.4 pounds. Is there sufficient evidence to indicate that the mean weight of the fish differs from 3.1 pounds? Use a 10% level of significance.
Calculate an 85% confidence interval for the population mean number of wolf pups per den at southwestern United States (US).
Describe a research problem that would benefit from Factor Analysis. What are the variables and what would you hope to achieve?
mtv some students do homework with the tv on. anyone come to mind? some researchers want to see if people can work as
An olympic archer is able to hit the bull's-eye 70% of the time. Assume each shot is independent of the others. If she shoots 6 arrows, what is the probablitly that she never misses?
How large a sample is required if the 97 percent level of confidence is used and the estimate is to be within $2,500? The standard deviation is $16,000.
What minimum sample size will be required if they want to be 99% confident that the sample proportion will not differ from the true population proportion by more than 5%?
A recent national survey found that high school students watched an average (mean) of 6.8 videos per month. A random sample of 36 college students revealed that the mean number of videos watched last month was 6.2
If an analysis of variance is used for the following data, what would be the effect of changing the value of M1 to 20?
A jeweler at Tiffany & Company computes the value of the linear correlation coefficient for pairs of sample data consisting of Tiffany prices for gold wedding rings and the corresponding prices at a discount store.
At the .05 significance level, can we conclude that the guideline is still reasonable?
suppose three fair dice are rolled at the same time.a what is the probability that at least one number will be less
The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did..
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