Question

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 - 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 more seconds when she was speaking, with a standard deviation of 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. State the null and alternative hypotheses. Use for in the response area.

Answer 1

see explaination

Step-by-step explanation:

The statistical software output for this problem is:

One sample T summary hypothesis test:

μ : Mean of population

H0 : μ1 = 0

HA : μ1 > 0

With reference to the hypothesis test result in attachment.

Hence,

H0: μ1 = 0 vs HA : μ1 > 0

Test statistic = 3.110

p - Value = 0.0016

Reject H0

Yes

See attachment for Hypothesis test result