## Related questions with answers

Researchers have determined that teenagers' memories are negatively affected by getting less than 10 hours of sleep. Being good scientists, the math students at North Middle School were skeptical, so they did their own study. They asked 300 students to memorize 10 objects. The next day, each student was asked how much sleep he or she got and then was asked to list the ten items. The results are below.

$\begin{matrix} \text{ } & \text{Remembered all 10 items?} & \text{ } & \text{ }\\ \text{ } & \text{Yes} & \text{No} & \text{TOTAL}\\ \text{Less than 7 hours sleep} & \text{6} & \text{149} & \text{155}\\ \text{7-9 hours sleep} & \text{11} & \text{109} & \text{120}\\ \text{At least 10 hours sleep} & \text{5} & \text{20} & \text{25}\\ \text{TOTAL} & \text{22} & \text{278} & \text{300}\\ \end{matrix}$

Make a relative frequency table to determine if there is an association between hours of sleep and memory.

Solution

Verified## Create a free account to view solutions

## Create a free account to view solutions

## Recommended textbook solutions

#### Core Connections Course 3

ISBN: 9781603280914 (1 more)Brian Hoey, Judy Kysh, Leslie Dietiker, Tom Sallee## More related questions

1/4

1/7