Apollo medical supplies produces hypodermic needles. For a particular type of needle, the average length should be 70 mm, and it is estimated that the standard deviation of the system is 1.25 mm. Apollo conducts quality control by taking a sample of 16 random needles every hour. Below is the mean of 5 hours’ worth of samples. Sample Length (mm) 1 69 2 72 3 71 4 70 5 68 What would be the upper control level with a 99.7% level of confidence?

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If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

Select the correct answer from each drop-down menu. the table shows the annual sales revenue for different types of automobiles from three automobile manufacturers. sales revenue (millions of dollars) suv sedan truck marginal total b & b motors 22 15 9 46 pluto cars 25 27 10 62 panther motors 26 34 12 72 marginal total 73 76 31 180 the company with the highest percentage of sales revenue from sedans is . of the annual sales revenue from suvs, the relative frequency of pluto cars is .