Q1 – What is the relative frequency of the 20-29 interval? (2 decimal places)

Q2 – What is the variance? (2 decimal places)

Q2 – What is the median? (2 decimal places)

Q1 – What is the frequency of the 40-49 interval?

Q1 – What is the -z1 value?

Q2 – What is the index number used to find the third quartile value?

Q5 – What is the mean?

Q2 – What is P(X≥13)?

Q1 – What is the cumulative relative frequency of the 50-59 interval? (2 decimal places)

Q5 – How many students should be able to complete the test between 48 and 58 minutes? (round to whole number)