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Alicia Alcaraz

Alicia A.

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INSTANT ANSWER

For α = .05 and 2 tails, and an Independent-Samples t-test with n1 = 25 and n2 = 35, lookup the tcritical (using your t-table). Group of answer choices A) -2.28 B) +3.23 C) ±2.021 D) ±2.704

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For the following expected and observed frequencies, find the Chi-Square obtained statistic (χ2obtained). 1st Category 2nd Category 3rd Category Observed (fO) 9 11 1 Expected (fe) 7 7 7 Group of answer choices A) 8.00 B) 4.00 C) 6.00 D) 10.00

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For the following Independent-Measures ANOVA, find the F-obtained. SOURCE SS df MS Fobt Between 32 2 Within 12 9 Total 44 11 Group of answer choices A) 18.00 B) 6.00 C) 24.00 D) 12.00

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For the following two samples of scores, calculate the pooled variance from an Independent-Samples t-test. Sample 1 Sample 2 n1 n2 11 11 M1 M2 50 55 SS1 SS2 86 92 Group of answer choices A) 4.90 B) 8.90 C) 2.90 D) 6.90

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For the following Before/After data, calculate the t-obtained for a Related-Samples t-test. Before After 10 15 12 15 14 15 12 14 11 19 Group of answer choices A) 3.58 B) 3.06 C) 4.72 D) 4.23

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You watch people exiting Dodgers stadium after a game and you write down two things about each person: (1) How many pieces of blue “Dodgers” clothing they are wearing, and how sad they look (on a scale of 1-10) that the Dodgers just lost. You are curious about whether there is a relationship between these two variables, and also whether you can use the number of pieces of “Dodgers” clothing that a person wears to a game to predict how sad they will be if the Dodgers lose. What kind of hypothesis test would allow you to do this? Group of answer choices A) Chi-Square Goodness of Fit B) Two-Factor ANOVA C) Correlation/Regression D) One-Factor, Independent-Measures ANOVA

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You want to study whether music affects people’s ability to learn. You have 10 college students study a list of words with soft classical music playing, then you test how many words they correctly remember. You happen to know that on this particular type of memory test, the population can correctly remember a mean of μ = 7.2 words with a standard deviation of σ = 2.2 words. What kind of hypothesis test should you do? Group of answer choices A) Independent-Samples t-test B) One-Sample t-test C) One-Sample z-test D) Related-Samples t-test

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You want to see if violent videos games have any effect on aggression for middle school boys. So, you get a sample of 50 middle school boys, you have them play a violent video game for one hour, then you measure their aggression as you watch them on the playground for one hour and record the number of pushes, shoves, kicks, or punches they do to other children. A week later, you repeat the entire procedure, but this time the video game they play is a nonviolent one. You want to compare their aggression scores from the day that they played the violent video game to their aggression scores from the day they played the nonviolent game. What kind of hypothesis test do you think would be appropriate for this study? Group of answer choices A) One-Sample t-test B) Independent-Samples t-test C) One-Sample z-test D) Related-Samples t-test

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INSTANT ANSWER

Which APA sentence below is formatted correctly with no mistakes? Group of answer choices A) t(10), tcrit > 5.3, p < α B) t(.8128) = 7.0, p = α, tobt = 4.25 C) t(30) = 2.56, p < .01, d = 1.23 D) t(25) 3.54 = p < .01, d > 0.84

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ANSWERED

Pritesh Ranjan verified

Numerade educator

For a normal distribution with a mean of µ = 10 and a standard deviation of σ = 2, what is p(X<15)? Group of answer choices A) p = About 87% B) p = About 99% C) p = About 49% D) p = About 68%

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