B8. A small pilot study is conducted to investigate the effect of a nutritional

Question

B8. A small pilot study is conducted to investigate the effect of a nutritional supplement on totalbody weight. Six participants agree to take the-nutritional supplement. To assess its effect on body weight, weights are measured before starting the supplementation and then after 6 weeks. The data are shown below. Is there a significant increase in body weight following supplementation? Run the test at a 5% level of significance. (enter 1 for "yes", and 0 for "no")T Subjectit Initial Weight Weight after 6 Weeks# 21t 31t 4 53t 63t 155H 142H 176H 180x 21011 125 157H 145t 1802 175 209x 126r 39. A small pilot study is run to compare a new drug for chronic pain to one that is currently available Participants are randomly assigned to receive either the new drug or the currently available drug and to dinal scale. 1 = Pain is much worse, 2 = Pain is slightly worse, e test to assess

Explanation / Answer

we will use t-paired test as 6 participant remain same before and after

this is one-sided test

TS = -0.5

t-critical = -2.015

since |TS| < |t-crtical|

we fail to reject the null hypothesis

0- No

Please rate

t-Test: Paired Two Sample for Means initial after Mean 164.6666667 165.3333333 Variance 919.8666667 849.0666667 Observations 6 6 Pearson Correlation 0.994767094 Hypothesized Mean Difference 0 df 5 t Stat -0.5 P(T<=t) one-tail 0.319149436 t Critical one-tail 2.015048373 P(T<=t) two-tail 0.638298872 t Critical two-tail 2.570581836

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