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. State the null and alternative hypotheses. O Ho: Hd = = 0 vs HA: Hd #0 O Ho: Pa = O Ho: Hd = O Ho: P = 0 vs HA Hd < 0 O Ho: Hd = = 0 vs HA: Hd > 0 27.79 vs HA: Hd > 27.79 27.79 vs HA: Hd # 27.79 eTextbook and Media
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. State the null and alternative hypotheses. O Ho: Hd = = 0 vs HA: Hd #0 O Ho: Pa = O Ho: Hd = O Ho: P = 0 vs HA Hd < 0 O Ho: Hd = = 0 vs HA: Hd > 0 27.79 vs HA: Hd > 27.79 27.79 vs HA: Hd # 27.79 eTextbook and Media
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Read the passage on Babies prefer speech first and then answer the questions carefully to get the correct answers please.
Transcribed Image Text: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.
State the null and alternative hypotheses.
O Ho: Hd =
= 0 vs HA: Hd #0
O Ho: Pa =
O Ho: Hd =
O Ho: P = 0 vs HA Hd < 0
O Ho: Hd =
= 0 vs HA: Hd > 0
27.79 vs HA: Hd > 27.79
27.79 vs HA: Hd # 27.79
eTextbook and Media
Calculate the relevant test statistic.
Round your answer to three decimal places.
t-statistic = i
Transcribed Image Text:Find the p-value.
Round your answer to four decimal places.
p-value = i
eTextbook and Media
What is the conclusion?
Reject Ho.
O Do not reject Ho.
e Textbook and Media
Do we have evidence to conclude that babies prefer speaking to humming?
Yes
O No
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