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Author Question: A result is called statistically significant whenever a. the null hypothesis is true. b. the ... (Read 890 times)

elizabeth18

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on: Jul 24, 2018
A result is called statistically significant whenever
 a. the null hypothesis is true.
  b. the alternative hypothesis is true.
  c. the p-value is less than or equal to the significance level.
  d. the p-value is larger than the significance level.

Question 2

Exam scores for a large introductory statistics class follow an approximate normal distribution with an average score of 56 and a standard deviation of 5 . The average exam score in your lab was 59.5 . The 20 students in your lab sections will be considered a random sample of all students who take this class. What is the probability that the average score of a random sample of 20 students exceeds 59.5?
 a. < 0.0001
  b. 0.0009
  c. 0.0026
  d. 0.2420


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livaneabi

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Reply #1 on: Jul 24, 2018
Answer to Question 1

C

Answer to Question 2

B


elizabeth18

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Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

helenmarkerine

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Reply 3 on: Yesterday
Excellent

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