Flight times, in minutes, were measured for a sample of drones delivering packages. The following display from
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Flight times, in minutes, were measured for a sample of drones delivering packages. The following display from a TI-84 Plus calculator presents a 99%
confidence interval for the population mean flight time.
a. Fill in the blanks: We are _______________ confident that the population mean flight time is between _____________ and _______________ .
b. Assume the population is not normally distributed. Is the confidence interval still valid? Explain.
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