A casino manager is concerned that the latest batch of “two-up”…
Question Answered step-by-step A casino manager is concerned that the latest batch of “two-up”… A casino manager is concerned that the latest batch of “two-up” coins received from their supplier may be biased to land “heads” more often than 50% of the time. To test whether this is the case, the manager took the first 20 coins from the latest batch and randomly selected a group of 50 employees to flip coins for him. The manager noted down how many of the 20 coins landed “heads” for each of the 50 employees. If the coins are unbiased, then the number of times that “heads” is observed should not differ from a mean of 10 (out of 20 coin flips). You use the data that the manager collected to determine whether the batch of coins is biased towards “heads” or “tails”. IDSexAgeNum_HeadsIDSexAgeNum_Heads1M40926M55112F201127M56123M431428F34114F601129F55115F181230M32116M191031F18137F341232F20118F221033M30109F441334F55910M331335F431211F251036F22912M631337M191013F221238M221314M191539F241315M251040M271016F27941F371217M331142F661118M22043M431019F271244F551120F281145F661121M211246M321222M441447F181323F231048F23924F321049F27025M42850F289 (1) Write results section . 2 marks for this “working out” (2) What is the name of the statistical analysis you used? 1 mark (3) What is the mean age of male and female participants respectively? 1 mark Female = Male = (4) What is the standard deviation of the number of heads for male and female participants respectively? 1 mark Female = Male = (5) Which participants were outliers? (Provide their ID number, or write “no outlier” if you didn’t identify anyone. Do this for the entire sample – do not split by Sex from this question onwards). 1 mark (6) If there was an outlier, what number did you change their score to? Write “Not applicable” if there was no outlier. 1 mark (7) Was the assumption of normality met? (Yes/No). 2 marks (8) What were the degrees of freedom for the test statistic? (if applicable). 1 mark (9) What was the value of the test statistic? 2 marks (10) What was the probability value associated with the test statistic? 2 marks (11) What was the value of the Cohen’s d effect size? Write “Not applicable” if effect size is not relevant to the Scenario 1 analysis. 1 mark Math Statistics and Probability PSYCHOLOGY 1711 Share QuestionEmailCopy link Comments (0)
