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For the preceding problem you should find that there are significant differences among the three treatments. One reason for the significance is that the sample variances are small. To create the following data, we started with the values from problem 9 and increased the varibility (the Ssvalue) within each sample.
1 2 3
n=5 n=5 n=5
M=2 M=5 M=8 N=15
T=10 T=25 T=40 G=75
SS=64 SS= 80 SS= 96 EX 2 = 705
E stands for summation
2 stands for the second power
What is the level of measurement for the variable, "political ideology" measured as "Very Conservative", "Conservative","Moderate", "Liberal" and "Very Liberal".
The time (in hours) until failure of a transistor is a random variable X which is exponentially distributed with mean = 50. It is observed that after 40 hours the transistor is still working. Find the conditional probability that X > 65.
She then uses the mean and standard deviation of these values to estimate the mean value for all parts the operator is making. Construct a 95% confidence interval for the mean value assuming a normal distribution.
Computing the probability value using normal distribution - find the normal distribution
If she has chosen the first weeks rides, how many ways can she choose four more different rides for the second week? Assume that order does not matter.
Determine the probability that the project will be completed in 80 days or less.
a bank has the following data on the gender and marital status of 200 customers: single 20 male 30 female, married male 100 female 50,
A recent article in Business Week listed the "Best Small Companies." We are interested in the current results of the companies' sales and earnings.
A state meat inspector in lowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled " 3 pounds." Of course, he realizes that the weights cannot be precisely 3 pounds.
The records show that 8% of the items produced by a machine do not meet the specifications. Use the normal approximation to the binomial distribution to answer the following questions.
The estimated salary range is $4,500, the margin of error should be $100 and the desired level of confidence is 95%.
What would be the correct null and alternative hypothesis for the following situation: The sample has a mean of 72.3 mph and a standard deviation of 7.4 mph. Use a 0.05 significance level to test the claim that the mean speed of all cars is greate..
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