Math  /  Data & Statistics

QuestionA study 1{ }^{1} indicates that babies may choose not to learn from someone they don't trust. A group of 60 babies, aged 13 to 16 months, were randomly divided into two groups. Each baby watched an adult express great excitement while looking into a box. The babies were then shown the box and it either had a toy in it (the adult could be trusted) or it was empty (the adult was not reliable.) The same adult then turned on a push-on light with her forehead, and the number of babies who imitated the adult's behavior by doing the same thing was counted. The results are in Table 1. Test at a 5%5 \% level to see if there is evidence that babies are more likely to imitate those they consider reliable. \begin{tabular}{lcc} \hline & Imitated & Did not imitate \\ \hline Reliable & 18 & 12 \\ Unreliable & 10 & 20 \\ \hline \end{tabular}
Table 1 Babies imitate those they trust 1{ }^{1} Wood, J., "Babies Learn Early Who They Can Trust," Psych-Central, http://psychcentral.com/news/2011/12/07/babies-learn-early-who-they-can-trust/32278.html. (a) State the null and alternative hypotheses.

Studdy Solution
There is statistically significant evidence at the 5% level that babies are more likely to imitate those they consider reliable.

View Full Solution - Free
Was this helpful?

Studdy solves anything!

banner

Start learning now

Download Studdy AI Tutor now. Learn with ease and get all help you need to be successful at school.

ParentsInfluencer programContactPolicyTerms
TwitterInstagramFacebookTikTokDiscord