Kalea's weekly study hours over seven weeks are \(7,6t,28,25,13,8t^2,12\), with mean 16 hours.
Show that \(t=1.5\).[3]
Kalea has standard deviation 7.41. Her brother has mean 13 hours and standard deviation 5.23 over the same weeks. Compare their distributions by commenting on both means and standard deviations.[2]
Solution:
Solution locked
Sign in to view the step-by-step solution
Similar questions are unavailable for this question.
Answer:(a) \(t=1.5\) (b) Kalea has the higher mean and greater spread.