h3 A recent stuy o tood portion sizes reported that over a 17-year period, the a
ID: 3357617 • Letter: H
Question
h3
A recent stuy o tood portion sizes reported that over a 17-year period, the average size ot a sott drink consumed by Americans aged 2 years and oder increased trom 13.1 ounces (0z) to 19.9 0z. The authors state that the ditterence is statistically signiticant with 0 01.t Explain hat dd ional nformation you uid need to compute a confidence interval ro nd outline the procedure that use ror the computations Select all that apply. r the increase, a you would Stan ard vlations and degres of treatam could hF lisAd to tind tre cnntidAnca interval. In thls caGA Me Muld now tind the D-value, which could b ""d to rind 5 :D. Dagraes af fraedom and a mora accurate pvalua could be used to find the canfidanca Intarval. In this case wa could determina t, then caleulate SE and r" Gample szes and a more acourate P value ould be used to find the confidence interval. In this case we could determine standard deviations and the confidence interval in the usual way Sample sizes end standard deviations could be used to find the confidenve interval. In this case we could find the intervel in the usual way. tand degrecs of freedom could be used to find the confidence interval. In thie case we could compute SE and uss degrees of freadom to find * Do you think that confidencc interval would provid useful additional information? Explain why or why not. Yes, the confidence interval could give u O No, the cnntid na interval could give us n mora u"tul Intormation hecaiise it cannat tall us theampa size in the study. O No, the confidenoe interval could give us no more useul information because the P value already tel s us that the interval dees not contain O Yes, the cuifidence interval could qive us uselul infurmetion dbu the averaue size of sul drinks O Yes, the confidence interval could give us useful information about the variability between sample partioipants in the study useful infurmetion db the maunitude o he diTeceExplanation / Answer
1) Option-D
2) Option-D
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