43,...,279 n in the histogram above complete the table and answer the questions

Question

43,...,279 n in the histogram above complete the table and answer the questions below. Round numbers to the nearest hun Relative FrequencyiP(x) Reduced Fraction decimal Number of Tickets (Class) Midpoint Frequency 49.5 40-59 60-79 80-99 Rs 0.18 4 0.27 0.22 0.12 16 69.5 24 15 100-119 109.5 120-139 140-159 160-179 129.5 149.5 2 0.04 169.5 189.5 209.5 229.5 180-199 0.02 0.03 200-219 220-239 240-259 260-279 249.5 0.01 269.5 0.02 umber of tickets that Jeremy won over 90 days the mean or the expected value? n/expected value find the sum of the midpoint multiplied by the relative frequency The mean/expected val earest hundredth )

Explanation / Answer

From the given data

The number of tickets that Jerny won over 90 days the mean or the expected value = 20 +11+5+4+2+2+3+0+1+2 = 50

Class Midpoint frequency Relative frquency 40-59 49.5 16 0.18 60-70 69.5 24 0.27 80-99 89.5 20 0.22 100-119 109.5 11 0.12 120-139 129.5 5 0.06 140-159 149.5 4 0.04 160-179 169.5 2 0.02 180-199 189.5 2 0.02 200-219 209.5 3 0.03 220-239 229.5 0 0 240-259 249.5 1 0.01 260-279 269.5 2 0.02 Total: 90

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