33. A researcher hypothesizes that babies will fall to sleep more quickly if the

Question

33. 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   

34. If statistical analyses show that the difference between condition means is larger than would be expected on the basis of error variance alone, a researcher will   

a. accept the null hypothesis

b. reject the null hypothesis   

c. fail to reject the null hypothesis  

d. reject the experimental hypothesis  

35. If statistical analyses show that the difference between condition means is no larger than would be expected on the basis of error variance alone, a researcher will   

a. accept the null hypothesis   

b. reject the null hypothesis

c. fail to reject the null hypothesis   

d. reject the experimental hypothesis

Explanation / Answer

33. Null hypothesis assumes that there is no significant difference between specified populations. Therefore, the answer is C

c. babies who hear a heartbeat will fall asleep just as quickly as those who don’t hear a heartbeat

34. When variance is large we can accept the null hypothesis

a. accept the null hypothesis

35. When the variance is low then we can reject the null hypothesis

b. reject the null hypothesis

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