9 of 11 (0 complete) s Question. pt This Test: 11 pts possib Question Hep Prelim

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9 of 11 (0 complete) s Question. pt This Test: 11 pts possib Question Hep Preliminary data analyses indicate that use of a paired t test is reasonable in the following exercise Perform the hypothesis test by using eiterpe criticalvalue approach or the P-value approach the 1% significance level, do the accompanying data provide sufficient evidence to conclude that, on average, drinkong fortfed orange juice increases the serum 250oH)o concentration in the blood? (Note: The mean and standard deviation of the paired differences are -58 23 nmo Land 2682 nmo/L, respectively) Click the icon to view the description of the test Click the icon to view the data table for serum 250oHD concentrations in the blood State the null and alternative hypotheses. Let the Betore values be populaton 1 and the Ater values be population 2 Choose the conrect answer below C. Ho W1 w2 Determine the test statistic, Cick to select your answers) O Type here to

Explanation / Answer

hypothesis: mean1=mean2

alternative hypothesis:mean1<mean2

test stat t=-8.1228

critical value t<-2.6503

conclusion: reject HO: data provide sufficient ....option A

before After difference(d) 15.3 40.2 -24.9 115.6 220.3 -104.7 21.9 72.3 -50.4 52.2 84.5 -32.3 20.6 91.7 -71.1 102.4 125.8 -23.4 86.9 157 -70.1 29.1 100.2 -71.1 36.9 123.6 -86.7 164.7 218.1 -53.4 156.1 200.2 -44.1 89.2 176.3 -87.1 155.1 174.9 -19.8 103.9 180 -76.1 mean -58.229 std deviaition 26.8221 sample size 14.0000 std error= std dev/(n)^(1/2) 7.1685 t stat= (d)/std error -8.1228 p value = 0.0000

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