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. 2You 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. 3In 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. 4You 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?