7.) Assume the annual salaries of police officers are normally distributed with a mean of $50,000 una deviation of $7000. a.) Determine the percent of police officers with an annual salary of at least $50,000. b.) Determine the percent of police officers with an annual salary between $43,000 and $64,000. c.) Determine the percent of police officers with an annual salary of at least $58,750.

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A: