A small stock brokerage firm wants to determine the average daily sales (in dollars) of stocks to their clients. A sample of the sales for 36 days revealed an average daily sales of $200,000 . Assume that the standard deviation of the population is known to be $18,000
a. Provide a 95% confidence interval estimate for the true average daily sales.
b. Provide a 97% confidence interval estimate for the true average daily sales.
a. $194,120 to $205,880
b. $193,490 to $206,510
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Indicate whether the statement is true or false
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