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Question: For each of the following hypotheses, identify the likely dependent variable and a likely way of operationalizing that dependent variable. Be specific.
a. Teenagers are better at video games, on average, than are adults in their 30s.
b. Spanking children tends to lead them to be more violent.
c. Weight Watchers leads to more weight loss, on average, if you go to meetings than if you participate online.
d. Students do better in statistics, on average, if they study with other people than if they study alone.
e. Drinking caffeinated beverages with dinner tends to make it harder to get to sleep at night.
What is the probability that this marble is red (round to two decimal places)? What is the probability that this marble is green?
Determine whether or not the mean waiting time of all customers is significantly more than 3 minutes.
Critically evaluate the article by examining the worthiness of the survey. In your discussion, cover the following items: purpose of survey, why was it conducted, for who was it conducted, and was it based on a probability or nonprobability sample..
What is the approximate margin of error that accompanies this result?- What is the interval that is 95% certain to contain the actual proportion of people in this age group who have seen a ghost?
The total duration of baseball games in the major league in the 2011 season is uniformly distributed between 447 hours and 521 hours inclusive.
the number of customers at quiet morning bakery is believed to follow a poisson distribution with a mean of 2 customers
In a few sentences, describe two designs that can address your research question. The designs must involve two different statistical analyses.
a seven-year medical research study reported that women whose mothers took the drug des during pregnancy were twice as
A method of determining if relationships exist between two variables is:
A fair coin is tossed n times, and the number of heads, N, is counted. The coin is then tossed N more times. Find the expected total number of heads generated.
When 40 people used the Weight Watchers diet for one year, their weight losses had a standard deviation of 4.9 lb (based on data from "Comparision of the Atkins, Ornish, Weight Watchers, abd Zone Diets for Weight Loss and Heart Disease Reduction, ..
Everhart, Inc., is a U.S. firm with no international business. It issues debt in the United States at an interest rate of 10 percent per year. The risk-free rate in the United States is 8 percent. The stock market return in the United States is ex..
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