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A researcher finds a correlation between self esteem and shyness is -0.50, which is significant for his sample. Interpret this correlation.
What does a correlation coefficient tell us? Why are correlation coefficients useful when assessing reliability?
What are the 2 ways in which researchers assess the reliability of their measures? Be sure you understand the difference among these 2 approaches to reliability.
What is validity with respect to a research project? Discuss the different types.
What is validity with respect to the measurement of a psychological construct?
is the nutritional information listed on food items accurate? researchers randomly sampled 12 frozen inners of a
In a goodness-of-fit test where the sample size is 200, there are 5 categories, and the significant level in .05. The critical value of X2 is.
Normal Approximation to the Binomial
If one person is selected at random, what is the probability that person is Female?
1. when an engineer wants to send a binary signal a 0 or 1 signal through a communication channel assume that there is
Do the data from this sample provide evidence for a significant increase in REM activity during exams? Use a one-tailed test with _ = .01. B.) Compute Cohen's d to estimate the size of the effect.
A population that starts at 100 and doubles in growth every eight years: The expression would give the population t years after the growth starts.
a purse contains 101 in anthony dollars and 1 in pennies. smith is allowed to draw and keep coins one at a time until
One advantage of the repeated measures ANOVA is that it eliminates "individual differences" as a source of variability. Explain why there are no individual differences in the numerator and in the denominator of the F ratio.
optimism and longevitya cancer specialist from the los angeles county general hospital lacgh rated patient optimism in
the average gasoline price of one of the major oil companies has been 3.00 per gallon. because of shortages in
data are gathered regarding the length of tenure top executives have at a major corporation and whether those
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