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Random samples of five were selected from each of three populations. The sum of squares total was 100. The sum of squares due to the treatments was 40.
a. Set up the null hypothesis and the alternate hypothesis.
b. What is the decision rule? Use the .05 significance level.
c. Complete the ANOVA table. What is the value of F?
d. What is your decision regarding the null hypothesis?
Height of men have a mean of 69.6 inches and standard Dev of 2.8 inches. If 64 men are randomly seleted, find the probabilty that they have a mean greater than 70.6 inches.
Assuming that = 119.5 ng.ml, test the claim that the mean cotinine level of all smokers is equal to 200.0 ng/ml. Use a 0.05 significance level.
Let X1 and X2 denote the proportion of two different chemicals found in a sample mixture of chemicals and used as an insecticide. Suppose X1 and X2 have the joint probability density function given by:
Provide a discussion that supports the assumption that the variance of savings increases with family income.
If a worker is known to strongly agree with the statementMy current job brings out the most creative ideas" what is the probability that the worker is engaged?
A unit for a telecommmunication system is to be designed so that the probability that it fails during a period of five years does not exceed 0.4. the unit is to be made up of (n) effectively identical componants each with an exponential failure di..
A sample of 60 students from a large university is taken. The average age in the sample was 22 years with a standard deviation of 6 years.
A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.7 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the store's claim.
The historical reports from two major networks showed that the mean number of commercials aired during prime time was equal for both networks last year.
Confidence Intervals around a Population Parameter Never preferred but is accepted as a Trade off for cost and/or time. Dataset Accuracy Confidence Example Preference?
Given the following raw scores, calculate the following values: Range, Variance and Standard Deviation, show your calculations: Scores: 9, 7, 8, 4, 8, 8,7, 8, 9, 6, 3
Define correlation. Then give an example of a misleading correlation and an example of a meaningful correlation. With this describe the relationship between correlation and causation.
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