A researcher hypothesizes that babies will fall to sleep more ...

[burton19126]

A researcher hypothesizes that babies will fall to sleep more quickly if they can hear the sound of a recorded heartbeat. The null hypothesis for this study is that
 
  a. babies who hear a heartbeat will fall asleep more quickly than those who don't hear a heartbeat
  b. babies who hear a heartbeat will fall asleep more slowly than those who don't hear a heartbeat
   c. babies who hear a heartbeat will fall asleep just as quickly as those who don't hear a
  heartbeat
  d. babies who hear a heartbeat will not fall asleep
  e. these are all null hypotheses

Question 2

A frequency polygon is a
 
  a. bar graph
  b. table
   c. line graph
  d. class interval
  e. histogram

[mariahkathleeen]

Answer to Question 1

Awesome help, super fast

Answer to Question 2

C

[burton19126]

Excellent

[cam1229]

Gracias!