The monthly salaries (in thousands of dollars) of a sample of 6 sales representatives are as follows. 13, 12, 8, 11, 10, 12
Find the standard deviation of this sample of monthly salaries. Round your answer to two decimal places.
(If necessary, consult a list of formulas.)
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Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults. how many students and adults went if the ticket charge was $42.75

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

What is the circumference of the pie