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People who wrote about a time when their lives were unfair did report being more angry after writing the essay (M = 2.05, SD = 1.18) than did people who wrote about a time when they were bored (M = 1.34, SD = .77), t(103) = 3.64, p < .001
1. Bold descriptive statistics and underline or highlight inferential statistics.
2. List test statistic _____ ____, p value ______
3. What decision should the author make about the null hypothesis (i.e., retain or reject)?
4. What are two possible interpretations?
The table below gives the distribution of blood types by sex in a group of 1,200 individuals.
The application envelopes at random looking for 10 applicants with GRE scores over 600. How many envelopes do you think the staff will need to open?
For a large group of overseas passengers, the mean is 78 pounds and the standard deviation is 15 pounds. compute the relative dispersion of each group.
Suppose we flip a fair coin repeatedly. Let Xi equal 1 if flip i was heads (H) and 0 otherwise. Let N denote the number of flips needed until H has occurred 100 times.
a survey of women students at a college showed that 15 smoke cigarettes 40 drink coffee and 5 both smoke cigarettes and
Translate the following arguments into symbolic form.- If jails are overcrowded, then dangerous suspects will be released on their own recognizance.
Mental health among search and rescue workers. van der Velden, van Loon, Benight, and Eckhardt (2012) investigated whether search and rescue workers.
say a random variable x is drawn uniformly from between 0 and 1. say that y sin2pix. what is the covariance between x
List all possible combinations of opinions that can be held by students A, B, and C. (Hint: There are eight possibilities.) Then give the probability of each of these outcomes. Note that they are not equally likely.
Perform the test as it should have been done and find if you come to a different conclusion. Explain why the results were different and why your test was a stronger and more reliable test.
Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
A stock price is currently $100. Over each of the next two three-month periods, it is expected to increase by 10% or fall by 10%. Consider a six-month European call option with a strike price of $105.
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