M is approximately normal with mean 12 and SD 4 Which of the following has the same value as P(8 < M <20)? a. P( 4< Y < 8) when Y - N(5,1) O b. P( 3< Y < 7) when Y - N(5,1) O c. P(3 < Y < 6) when Y - N(5,1) d. P( 2< Y < 7) when Y - N(5,1)

The results section of an article reports the following “IQ scores of the sample differ from the population mean of 100, single sample t (19) = 2.80, p < .05, two tail”. Based on this result, how many people were included in the sample? Select one: 20 21 19 38

From this geometruc distrubtion. (0.45)8(0.55). What does the 8 represent?  1. Probability of failure 2. Probability of success  3. The number of failurees 4. Number of sucesses

49 of 2. CO 60 8 7. Fill in the table below: FiLl in the differences of each data value from the mean, then the squared lifferences. 2. I'– 1) 5. 3. -5 9. 14 7. 6. -1 25 8. 1. 49. 3) Calculate the sample standard deviation (s). 12 a) ENG 2/1 dy ins prt sc f12 delete home + backspace unu lock

A sample of n = 7 scores has a mean ofM 5. After one new score is added to the sample, the new mean is found to be M 6. What is the value of the new score? (Hint: Compare the values for EX before and after the score was added.)

1. You are interested in the effect of a new learning technique. The performance score on the test before applying the new learning technique is 50 (u=50), the standard deviation is 4 (o=4).  You obtained a sample of 64 subjects and applied the new learning technique. After that, their performance score on the test increased by 2 (x=52). Did the new learning technique improve/had any effect on the performance? The answer, using 4 steps of hypothesis testing.  Please use APA style to report your result.  Assume that a-level=.05 2. You are interested in the effect of a new learning technique. The performance score on the test before applying the new learning technique is 50 (u=50), the standard deviation is 24 (o=24).  You obtained a sample of 64 subjects and applied the new learning technique. After that, their performance score on the test increased by 2 (x=52). Did the new learning technique improve/had any effect on the performance? The answer, using 4 steps of hypothesis testing.…

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