An American roulette wheel has 38 slots and 18 of these are red. lithe wheel is fair, then the probability of it landing on red is 18/38. At a certain roulette table, after 190 spins it landed red on 78 of the spins. This is less than the expected value. Could chance explain the difference, or is this sufficient evidence otherwise? Use a hypothesis test as follows.

a) Compute the expected value of the number of "reds" after 190 spins, assuming the null hypothesis (that the wheel is fair).

b) Compute the SD of the number of "reds" after 190 spins, again assuming the null hypothesis. (You may round to two decimal places.)

c) Compute the z-statistic.

d) Is the result statistically significant, highly significant, or neither?

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a Calculate the expected value of the number of reds after ... View the full answer