There is a very popular lottery in which a ticket is called a scratcher. In this lottery, 47% of the scratchers are winning ones. Suppose that we will take a random sample of 7 scratchers. Let p represent the proportion of winning scratchers from the sample. Consider the sampling distribution of the sample proportion p Complete the following. Carry your intermediate computations to four or more decimal places. Write your answers with two decimal places, rounding if needed. S (a) Find us (the mean of the sampling distribution of the sample proportion). HA = X ? (b) Find on (the standard deviation of the sampling distribution of the sample proportion). on = X