According to the normal model with mean age of 60.0503 and standard deviation of 11.7869, it is predicted that 95% of Congress members are between 36.9 and 83.2 years old.
On the Dataset page, click on the filter icon for Age in 2020 in the Variables section of the left panel.
A menu labeled "Variables" is shown. A checkbox labeled "Age in 2020" is selected. An icon consisting of three horizontal bars is identified on the right hand side of the image.
A small window will open. Select "Between X and Y", enter the boundary ages for the middle 95%, and click "Add Filter."
A menu labeled "Filter for 'Age in 2020'" is shown. The drop down menu labeled "Filter Type" is selected. The menu option labeled "Between X and Y" is identified by an arrow.
SALT will filter out ages that are outside of this region and recompute the summary statistics. Return to the Descriptive Statistics page and find the number of Congress members who have an age in this region.
There are Incorrect: Your answer is incorrect. members of Congress in our sample who are between the ages of 36.9 and 83.2 years old.
Return to the Dataset page and remove the filter by clicking the X in the grey information bar in the Variable section of the left panel.
A menu labeled "Variables" containing a list of variables in the data set is shown. There is a check mark next to each variable name. There is an option below the variable labeled "Age in 2020 (in y..." which reads "Between 36.9 and 83.2." An arrow points to an "X" next to this option.
SALT will display the full dataset and original summary statistics. Back on the Descriptive Statistics page, locate the number of Congress members in our sample.
There are Incorrect: Your answer is incorrect. members of Congress in our sample.
What proportion of Congress members in our sample have an age within this region where the normal model predicted 95% should be? (Round your answer to three decimal places.)
P(36.9 ≤ X ≤ 83.2) =
Number of Congress members with an age in this range
Number of Congress members in sample
=
