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Author Question: In the construction of confidence intervals, if all other quantities are unchanged, an increase in ... (Read 54 times)

Arii_bell

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on: Jun 24, 2018
In the construction of confidence intervals, if all other quantities are unchanged, an increase in the sample size will lead to a ________ interval.
 
  A) less significant B) wider C) narrower D) biased

Question 2

You were told that the mean score on a statistics exam is 75 with the scores normally distributed. In addition, you know the probability of a score between 55 and 60 is 4.41 and that the probability of a score greater than 90 is 6.68. What is the probability of a score lower than 55?
 
  What will be an ideal response?


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karlss

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

C

Answer to Question 2

2.27 or 0.0227


Arii_bell

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

diana chang

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Reply 3 on: Yesterday
Excellent

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