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A local newspaper wanted to gather information about house sales in the area. It distributed 25,000 electronic surveys to its readers asking questions about house sales in the past 6 months. Of the surveys sent out, 3.2% were returned. The results found that 92% of people did not sell their house in the past 6 months and 85% of people would expect a loss if they sold their house. The writer wants to use these results to conclude that the housing market is declining, and we are headed for a recession. a. Explain the bias and sampling error in this study. b. Should the writer conclude that the housing market is declining based upon this data? c. Why or why not?
Sample sizes and standard deviations from the PROC TTEST printout and calculate the pooled estimate of variance
A student surveyed 200 students about hours a night spent sleeping, the data showed a normal distribution with a mean of 6.8 hours and a standard deviation of 0.75 hours. what percentage of the students spent less than 4.55 hours sleeping per..
a) Conduct a crosstabs analysis to examine the proportion of female high school students who take advanced math courses is different for different levels of the parent variable.
The following examples are experiments and their associated random variables. In each case identify the values the random variable can assume and state whether the random variable is discrete or continuous:
Analyze whether gender differences exist in the size of pay-raise and whether or not these differences are attributable to the size of the university.
consider the file showing data for magazine titles the cost of a full-color page advertisement page audience
there is a statistical difference between the ages of the sexes in the group.
the business manager of a large corporation wanted to determine whether there was a difference between what salesmen
3. hypothesis testing 15 marks should the cbc hire celebrities for their movies? to answer this question run a
A crucial step is offering participants a food reward
What values can X take on? What values can Y take on?
Analysis of Variance SPSS instructions: Use the five steps of hypothesis testing to determine whether the observed differences in the number of activities in the following table performed by the three groups are statistically significant at the .05 l..
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