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An amateur researcher believes that the number of books owned is correlated with emotional intelligence (EQ). She randomly surveys 100 women and 100 men and finds r = .22. What does she conclude?
a manufacturer of cordless electric shavers sampled 13 from a days production and found the mean time of continuous
The probability a student is a sophomore and is not satisfied = round to three decimal places.
Discuss the characteristics of a good research hypothesis. What distinguishes a null hypothesis from a research hypothesis? How would you explain the difference between non-directional research and directional research hypothesis?
In a certain class, midterm score averages out 70 with an SD of 15, as do scores on the final. The correlation between midterm scores and final scores is about 0.40. The scatter diagram is football-shaped.
For n = 25, α = .01, σ = 5, and H0:µ ≥ 60, verify that power is .95 when µ = 56. - For n = 36, α = .025, σ = 8, and H0:µ ≤ 100, verify that power is .61 when µ = 103.
Summarize the data graphically and numerically. Give reasons for the methods you chose to use in your summaries.
If a null hypothesis is µ= 60, and alternative hypothesis is µ
If i have 8 hookers, and 2 are wearing blue, 2 are wearing red, 3 are wearing purple, and 1 is wearing pink, what is the chance i will consummate with one wearing orange?
Use the binomial distribution to determine the probability that in 650 games 0, 1, 2, or 3 no-hitters will be pitched.
When is a regression equation used? What terms describe the fit of a regression equation to the data? What is the importance of the coefficient of determination (r2)?
Cloud Seeding-Multiplicative vs. Additive Effects. On the computer, create a variable containing the rainfall amounts for only the unseeded days.
Write appropriate hypotheses.- Check the necessary assumptions.- Perform the mechanics of the test. What is the P-value?- Explain carefully what the P-value means in this context.
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