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a. Find the mean and standard deviation for number of checks among 784 that have a leading digit of 1.b. Use your results from part (a), and the range rule of thumb to identify the values that are significantly low and high. c. Determine the probability that none of the checks had a leading digit of 1. State your values of n, p, and x. d. Given that the 784 checks amounts had no leading digits of 1, what can we conclude?
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