Don't drink and drive: A highway safety council reported that there were 3942 fatalities among drivers in auto accidents in a particular year. Following is a frequency distribution of their ages. Approximate the mean age. Round your answer to one decimal place. Age 11-20 21-30 31-40 41-50 51-60 61-70 Number of Fatalities 319 1544 827 693 429 130 Send data to Excel The mean is approximately

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A: The given z scores are z=-1.54 and z=2.54.

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Q: For a standard normal distribution, find: P(Z > c) = 0.9894 Find c rounded to two decimal places.

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A: Hint: Find the value of top 5.13% and see its paired value in the graph.

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Q: 147    153    166    173    186    182    183    186    182    166    182    163    153    145 1.…

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Q: Complete the table: Has Diabetes Doesn't have Diabetes Total Positive 12 7 Negative Total 15 300

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Q: Suppose the lengths of human pregnancies are normally distributed with 266 days and o-16 days.…

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A: The total number of customers is n = 11074.

Q: (b) Construct a relative frequency distribution of the data. Potholes Relative Frequency 1 2 3 4 5 6…

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Q: Find the mean of the data summarized in the given frequency distribution. Compare the computed mean…

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A: Given information:   X Y   22 18   15 16   9 31   7 8   4 2   45 36   19 12   26…