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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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courseherod courseherod
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6 years ago
Other things being equal, as the confidence level for a confidence interval increases, the width of the interval increases.
 
  Indicate whether the statement is true or false

Q. 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 between 75 and 90?
 
  What will be an ideal response?

Q. 3

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

Q. 4

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?
Textbook 
Statistics

Statistics


Edition: 12th
Authors:
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ignvntignvnt
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6 years ago
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courseherod Author
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6 years ago
Ready for finals now Monkey
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6 years ago
Good luck my friend!
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