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-false&cld-4855489;&centerwin;=yes Secure https://ww w.mathxl.com/Student/PlayerHomework.aspx?homeworkld-466191 548&questionld--5;&flushed.; Math 2283-012 Spring 2018 Homework: HW 14: Section 5.1 Score: 0 of 1 pt X)5.1.5 The number of arrivals per minute at a bank located in the central business district of a large city was recorded over a 4 of 8 (8 complete) a. Compute the mean number of arrivals per minute dof 200 minutes with the results shown in the table below. Complete parts a and b to the right Frequency 30 54 39 31 19 (Type an integer or a decimal.) Enter your answer in the answer box and then click Check Answer. Clear All F6 2 3 4 5 6

Explanation / Answer

from above mean =2.275

( please revert if there are other parts)

relative frequency frequency lottery profit(y) p(y) yP(y) y2P(y) (y-)2 (y-)2P(y) 30 0 0.150 0.000 0.000 5.176 0.776 54 1 0.270 0.270 0.270 1.626 0.439 39 2 0.195 0.390 0.780 0.076 0.015 31 3 0.155 0.465 1.395 0.526 0.081 19 4 0.095 0.380 1.520 2.976 0.283 14 5 0.070 0.350 1.750 7.426 0.520 8 6 0.040 0.240 1.440 13.876 0.555 4 7 0.020 0.140 0.980 22.326 0.447 1 8 0.005 0.040 0.320 32.776 0.164 total 1 = 2.2750 8.455 86.781 2= 3.2794 std deviation=     =    2 = 1.8109

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