d-181055974 Statistics 115-04 Summer 2018 Blair Slankard | 7/5/18 7:10 PM Test:

Question

d-181055974 Statistics 115-04 Summer 2018 Blair Slankard | 7/5/18 7:10 PM Test: Test 3 Submit Tes This Question: 1 pt 20r 20 1°complete) ? This Test: 20 pts ps The following data represent the number of games playod in each series of an annual tournament from 1926 to 2007 Complete parts (o) through (d) below 15 1 (a) Construct a discrete probabdlity distribution for the random variable x Round to four decmal places as needed ) (b) Graph the discrete probability distribution. Choose the correct gr OA. B. O C. D. Pix) fill (c) Compute and interpret the mean of the random variable . Round to four decimal places as needed Click to select your answers)

Explanation / Answer

Solution:-
(a) x frequency P(x)

4 15 15/81 = 0.1852

5 17 17/81 = 0.2099

6 18 18/81 = 0.2222

7 31 31/81 = 0.3827

Total 81 1

(b) option C.

(c) ? = ?x*p(x)
= (4*0.1852)+(5*0.2099)+(6*0.2222)+(7*0.3827)
= 5.8024

=> option B.

(d)

  ? = 1.1

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