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Although the rules of probability are just basic facts about percents or proportions, we need to be able to use the language of events and their probabilities.
Choose an American at random. Define two events:
A) = the person chosen is obese
B) the person chosen is overweight, but not obese
According to the National Center for Health Statistics, P (A) = 0.32 and P (B) = 0.34
1) Explain why events A and B are disjoint
2) say in plain language what the event "A or B" is. What is P (A or B)?
3) If C is the event that the person chosen has normal weight or less, what is P ( C )?
2 to every even-numbered card, with aces being 1s. Determine the frequencies of 0, 1, and 2. Use SPSS to get the value of test statistic and p-value.
Find the mean, median, mode, and midrange for these data.
Pretests, posttests and threats to internal validity and please discuss all threats to internal validity.
Determine the minimum required sample size if you want to be 99% confident that the sample mean is within 2 units of the population mean given sigma = 7.8. Assume the population is normally distributed.
Organize data into a frequency distribution. How many classes would you propose? What value would you propose for class interval?
A bank official reported the results of a regression analysis designed to predict the bank's charges (y), measured in dollars per month, for services rendered to local companies.
The credit score of a 35 year old applying for a mortgage at Ulysses Mortgage Associates is normally distributed with a mean of 600 and a standard deviation of 100.
In a study about postage tariffs and revenue, the European Economic Community wanted to look at the relationship between the number of postal employees in a country and the amount of domestic mail that was processed. They collected data for six di..
What are the advantages of ANOVA over the mean test and what are the disadvantages? Where would I use this in my everyday life?
Suppose that 1% of all people have a particular disease. A test for the disease is 99% accurate. This means that a person who test positive for the disease has a 99% chance of actually having the disease
A researcher is interested in whether social assertiveness might be influenced by training procedures. Two groups of college sophomores are randomly selected. Group A subjects are assigned to the "training sessions" and Group B subjects do not rec..
A noted psychic was tested for ESP. The psychic was presented with 400 cards face down and asked to determine if each card was marked with one of four symbols: a star, cross, circle, or square. The psychic was correct in 120 cases. Let p represent..
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