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Using SPSS, check the following data for homogeneity of variance:
Group 1 Group 2 Group 3
1 1 1
2 4 8
3 9 18
4 16 32
a Using an alpha of .05, what can you conclude about homogeneity of variance from the output? Word process your responses on the SPSS output pages.
A recent article in the Arizone Republic indicated that the mean sellingprice of the homes in the area is more than $220,000. Can we conclude that the mean selling price in the Goodyear, AZ area is more than $220,000.
A fair die is rolled nine times. What is the probability that an odd number (1,3 or 5) will occur less than 3 times?
Formulate the hypotheses that can be used to determine whether union membership increased in 2006.
Twenty three percent of automobiles are not covered by insurance. On a particular weekend, 35 automobiles are involved in accident.
A study is conducted to determine if the traffic light patterns at a busy intersection need to be adjusted to help the flow of traffic. Data on the volume of traffic and the traffic patterns during different times of day are recorded.
A normal population has a mean of 60 and a standard deviation of 3. You select a sample of 36. Compute the probability the sample mean is (Round z values to 2 decimal places and final answers to 4 decimal places):
Consider the following news headline, "Cigarette Smokers Make Lower College Grades than Nonsmokers" The news article goes on to say that researchers at a university collected information on rate of cigarette smoking (total number of cigarettes sm..
Then explain your answer to someone who has never had course in statistics (but who is familiar with mean, standard deviation, and Z scores.)
Drug manufacturer knows that for a certain antibiotics, the average number of doses ordered for a patient is 20. Steve Simmons, a salesman for the company
At the 0.05 level of significance, is there evidence of a significant relationship between the age groups and where people primarily get their news? If so explain the relationship.
List and describe the three assumptions of ANOVA. When should researchers use different hypothesis tests for independent and related samples? What is the difference between a one-way-ANOVA and a two-way-ANOVA?
we wish to estimate the mean using a sample size of n = 49. Find the probability that we could be correct within 1kg/m 2 .
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