Question

7:50 Exit Researchers studied the effects of learning about the effectiveness of a new medication (Tal & Wansink, 2014). Some participants heard information about the medication; others heard the same information and saw a graph that depicted the data they had heard about. Thus, the two groups had identical information. Participants rated the effectiveness of the medication on a scale of 1-9, with 9 indicating a higher level of effectiveness. The researchers reported "Participants given graphs expressed greater belief in the claims, rating the medication as more effective (6.83 of 9) than did participants given verbal description only (6.12 of 9)." The results were statistically significant. The researchers titled their paper "Blinded with Science" because the mere presence of a scientific cue - a graph - altered perceptions of medication. Use this example to answer questions 22, 23 and 24 *Parts a, b, c

Answer 1

a. - Memory score 1.044 - 0.131* number of distractions + 0.515*Hours of sleep b. For one unit change in number of distractions the average change in Memory score is -0.131 keeping hours of sleep constant. C. p value = 0.001 alpha = 0.05 p value < Alpha Therefore, hours of sleep is significantly different from zero, because p value for hours of sleep is less than the significance level that is 0.05.

a.

Yhat = 1.044 - 0.131* number of distractions+ 0.515*Hours of sleep

b.

For one unit change in number of distractions the average change in Memory score is -0.131 keeping hours of sleep constant.

c.

P value = 0.001

Alpha = 0.05

Therefore,hours of sleep is significantly different from zero, because p value for hours of sleep is less than the significance level that is 0.05.