AT 132-40 Elementary Statistics (Online Fal 2017) Homework: HW 8.2 Score: 0 of 1

Question

AT 132-40 Elementary Statistics (Online Fal 2017) Homework: HW 8.2 Score: 0 of 1 pt 8.2.36 HW Score: 59 09%,65 of | 8ofI1 (7 complete) Question Hep n a poli f 1500 aults in dy 2010, 780 of hose pollod said hat schools should ban sugary snacks and solt drinks Complete parts a and b below aDoamagrity of adults (more than 50%) support a sugary snacks State the nul and ahemative hypotheses Note that p is defined as the population proportion ban on sugary snacks and soft drinks? Perfom a hypothesis test using a significance level of 0.05 of people who believe that schools should ban sugary foods H p>052 p>0 50 OC. Hb p

Explanation / Answer

a) here std error =(p(!-p)/n)1/2 =0.0129

sample proportion phat =780/1500=0.52

hence test stat z =(phat-p)/std error =1.55

p value =0.061

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