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Pollution in West Tn. is thought to be producing a variety of health problems. You have been hired to test this hypothesis. Design an experiment to study the effects of 4 pollutants in 6 counties randomly selected from all counties in West Tn. Within each county, streams were randomly selected and 1 of 4 pollutants was placed in each stream. Twenty four hours later and 3 miles downstream from the point of injection, 4 containers of water are taken out for analysis. Either summarize your design or give an appropriate layout with table.
Sample data recently collected indicate that Dough Boy's crusts average 30 centimeter in diameter, with a standard deviation of 1.1 centimeters.
At.01 significance level, is there difference in mean number of times men and women order take-out dinners in month? Determine the p -value?
Results were analyzed using one -way ANOVA and included SSTR =7 , 102 and SSE = 10 ,511. Are all 8 tapes equally appealing on average? Determine p value?
Below is a normal plot of residuals from a regression. Does the plot indicate any problems with the assumption that the residuals are Normally distributed
Calculate the suitable mean response time from both proposed locations and find out which proposed site must be selected for the new emergency facility.
The significance level of a statistical test is equal to the probability that the null hypothesis is true.
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
The probability that the daily demand at this store is at least one and at most three is:
Make a scatter plot, illustrate the regression lines. Determine the correlation coefficient between husband’s and wife’s education for couples in which wife is employed full time?
Consider the following stemplot. The mean of the data represented in this stemplot ?
Create a set of n observations from the binomial distribution with 1 trial and the event probability of 0.007, where n is your answer.
Iindicate all samples are approximately Normal with no outliers. Is the ANOVA appropriate?
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