QuestionDetails: A psychologist wants to test whether very young children areesp
ID: 2915149 • Letter: Q
Question
QuestionDetails: A psychologist wants to test whether very young children areespecially attractedto bright ‘crayon box’ colors. Thus, she places heryoung subjects in a playroom with
three balls to choose from:
one is striped with black and white
one is made up of two assorted pastels shades
the last is striped with two bright primary colors.
The balls are identical in all other respects and their position isshuffled between trials so
that it will not influence the results. From her observations shefound that of the 60
toddlers she tested, 34 went for the brightly colored ball.
a) Formulate an appropriate null hypothesis as if you were theresearcher.
(Remember that in hypothesis testing, you must have a proportion(percent) to work with. Think carefully about this percentage.)
I thought the percent might be 33.4% because3 / 100 = 33 therefore it would have to be bigger than that.however, i'm 95% sure that is not the correct % needed. So then ithought maybe it's the % of colors but that would equal 33% as well(6 colors, 2 would be the correct colors = 2/6 = 33) so that'swrong as well. I honestly have no idea what it would be!
This is due on monday so i would really really appreciate anyhelp!!
Thank you soo much in advance! QuestionDetails:
Explanation / Answer
The null hypothesis is always theassumption that there is nothing special about the particular thingyou are investigating (in this case bright colors). Therefore thenull hypothesis should state that color has no effect on thetoddlers' choice of ball. So each ball should be select 1/3 or33.3% of the time. So you null hypothesis should be that theproportion of toddlers who select a brightly colored ball equals33.3%. in shorthand H0: p = .333
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