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In an experiment to compare the tensile strengths of I = 5 different types of copper wire, J = 4 samples of each type were used. The between samples and within samples estimates of sigma2 were computed as MSTr = 2673.3 and MSE = 1094.2, respectively.
a) Use the F test at level 0.05 to test H0 : mu1 = mu2 = mu3 = mu4 = mu5 versus Ha : at least two mui 's are unequal.
b) What can be said about the P-value for the test?
Review the Christian year pie chart and write a summary in which you (a) describe the significance of the holy days on the chart.
a production process that fills 12-ounce cereal boxes is known to have a population standard deviation of 0.009 ounce.
The rate of service calls per month was researched yielding the following results (no of service calls divided by the number of equipment): Do these data indicate that the program is effective?
Part A: Russia is well known to be amongst the most adroit nations at manipulating public opinion in other countries via its foreign influence operations. A Russian SVR agent has 45 million dollars
The length of country and western songs is normally distributed and has a mean of of 170 seconds with a standard deviation of 49 seconds.
The number of column inches of classified advertisements appearing on Mondays in a certain daily newspaper is normally distributed with a population mean of 320 and a population standard deviation of 20 inches.
Give the expected value and standard deviation of defective shoes in the ShoeFit store order.
A sample of 25 students enrolled in the university indicates that X (bar) = $285.4 and s = $42.20. Using the 0.05 level of significance, is there evidence that the population mean is above $300?
If one employee is randomly selected, find the decimal probability (four decimal places) that his/her commute takes the following amount of time.
The college theater department recently staged a production of a modern musical. A researcher recorded the gender of each student entering the theater and found a total of 385 females and 215 males.
Use a 0.01 significance level to test the claim that flights scheduled one day in advance cost more than flights scheduled 30 days in advance.
Aggregate the opinions of the experts by computing the minimum, maximum, 25 th percentile, 50 th percentile, and 75 th percentile values.
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