Computing probability of package delivery service

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Reference no: EM1320310

Q1) A sales rep for national clothing company makes 4 calls per day.  Based on historical records, given probability distribution explains number of successful calls each day:

Successful Calls

Probability

0

0.10

1

0.30

2

0.30

3

0.20

4

0.10

Expected number of successful sales calls per day is: 

i) 2.00

ii) 1.15.

iii) 1.90.

iv) 2.50

Q2) Package delivery service claims that no more than 5% of all packages arrive at address late.  Supposing that conditions for binomial hold, if sample of size 10 packages is randomly chosen, and 5 percent rate holds, determine the probability that exactly 2 packages in the sample arrive late? 

i) 0.0746

ii) 0.9884

iii) 0.2347

iv) 0.0439

Reference no: EM1320310

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