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One of the Behavioral Research Case Studies involved Agocha and Cooper's (1999) study of partner characteristics and intentions to practice safe sex. Below are the Pearson correlations between the likelihood that participants would discuss risks before having sex and several other variables.
a. In a stepwise regression analysis, which variable would enter the equation first? Why?
b. Can you tell which variable will enter the equation second? Why or why not?
c. Which variable is least likely to be included as a predictor in the final equation?
d. If a standard or simultaneous regression analysis was conducted on these data, what is the smallest that the multiple correlation between the five predictor variables and the criterion variable could possibly be? (This one will take some thought.)
A recent study of the laundry habits of Americans included the time in minutes of the wash cycle. A sample of 40 observations follows. Determine the mean and the median of a typical wash cycle.
blood type ab is found in only 3 of the populationdagger. if 275 people are chosen at random find the probability of
What is the expected number of crimes that will be solved? What is the standard deviation?
the number of deaths due to firearms in the united states between 1968 and 1993 are given belowyearfirearm deaths
Clyde's Chairs and Things sells custom made chairs. Yearly sales from 1983 to 2011 are provided below. After analyzing the information, answer the following questions as completely as possible:
a common test for extrasensory perception esp asks subjects to identify which of four shapes star circle wave or square
Suppose that 800 jawbreakers are selected at random from the production lines. Would it be unusual for this sample of 800 to contain 406 jawbreakers that weigh more than .4 ounces?
Consider the Basic Sample only. Create standardizations (z-scores) of for the variables: wages, age, education, and hours. Display the resulting histograms and statistics next to the unstandardized versions. Describe the main ways the pairs of gra..
1. what would be the appropriate statistical procedure to test the following hypothesis triglyceride values are a good
What is the expected number of people that leave the drive-thru with their orders filled in any given 4 minute interval?
A survey showed that 24% of college students read newspapers on a regular basis and that 81% of college students regularly watch the news on TV. The survey also showed that 21% of college students both follow TV news regularly and read newspapers ..
A film developer claims that the mean number of pictures developed for a camera with 24 exposer is less than 22. If the hypothesis test is preformed, how should you interpret a decision a)reject the null hypothesis and b) fail to reject the null h..
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