Question

Weekly wages (in rupees) of workers in a factory are as follow: weekly wages 1750-1775 no.of workers 10 weekly wages 1775- 1800 no.of worker 45 weekly wages 1800- 1825 no. Of workers 75 weekly wages 1825-1850 no. Of workers 60 weekly wages 1850-1875 no. Of workers 40 find the probability that the worker chosen at random earns: (a) Rs.1800 or more but less than Rs. 1850 (b) below Rs.1825 (c) at least Rs.1775 .

Answer 1

Answer:

Step-by-step explanation:

Given Weekly wages (in rupees) of workers in a factory are as follow: weekly wages 1750-1775 no.of workers 10 weekly wages 1775- 1800 no.of worker 45...

wages                     workers

1770-1775                  10

1775-1800                  45

1800-1825                 75

1825-1850                  60

1850-1875                  40

Now total number of workers is 230

Let W1 be the worker whose wages is 1800 or more but less than 1850

 so 75 + 60 = 135

So P(W1) = 135 / 230 = 27/46

Let W2 be the worker whose wages is below 1825

 10 + 45 + 75 = 130

So P(W2) = 130/230 = 13/23

Let W3 be the worker whose wages is at least 1775

45 + 75 + 60 + 40 = 220

So P(W3) = 220/230 = 22/23

Answer 2

Answer:

b

Step-by-step explanation:

just trust me