topic badge
Standard Level

10.02 Calculations with standard and normal distributions

Interactive practice questions

If Dave scores $96$96 in a test that has a mean score of $128$128 and a standard deviation of $16$16, what is his $z$z-score?

Easy
< 1min

Frank finishes a fun run in $156$156 minutes. If the mean time taken to finish the race is $120$120 minutes and the standard deviation is $12$12 minutes, what is his $z$z-score?

Easy
< 1min

If Iain's $z$z-score in a test is $1$1, the mean mark is $62%$62% and standard deviation is $3%$3%, what is $X$X, his test score?

Easy
< 1min

If Rochelle's $z$z-score in a test is $-3$3, the mean mark is $75%$75% and standard deviation is $3%$3%, find her test score, $X$X.

Easy
< 1min
Sign up to access Practice Questions
Get full access to our content with a Mathspace account

What is Mathspace

About Mathspace