6-5 #13 Do Babies Prefer Speech? Psychologists in Montreal and Toronto conducted a study to determine if babies show any preference for speech over general noise. 1 Fifty infants between the ages...

6-5 #13

Do Babies Prefer Speech?



Psychologists in Montreal and Toronto conducted a study to determine if babies show any preference for speech over general noise.¹ Fifty infants between the ages of 4-13 months were exposed to both happy-sounding infant speech and a hummed lullaby by the same woman. Interest in each sound was measured by the amount of time the baby looked at the woman while she made noise. The mean difference in looking time was 27.79 more seconds when she was speaking, with a standard deviation of 63.18 seconds. Perform the appropriate test to determine if this is sufficient evidence to conclude that babies prefer actual speaking to humming.



¹Corbeil, M., Trehub, S.E., Peretz, I., “Speech vs. singing; infants choose happier sounds,”Frontiers in Psychology, 25 June, 2013.

Find the p-value.


Round your answer to four decimal places.


p-value =

I have already sent in the question and it was wrong please try again