Question

25% of Netflix customers watch movies online from Netflix catalog. Assuming a binomial distribution, if a sample of 10 customers is selected, what is the probability that 3 or more but not greater than 7 watch movies online.

a) .4740

b) 1.775

c) .2534

d) .2206

Answer 1

Hello Sir/ Mam

YOUR REQUIRED ANSWER IS OPTION A : 0.474

Given that:

p	25.00%
n	10

Now, we know that:

Using this, we can get

x	P(x)
0	0.0563135
1	0.1877117
2	0.2815676
3	0.2502823
4	0.1459980
5	0.0583992
6	0.0162220
7	0.0030899
8	0.0003862
9	0.0000286
10	0.0000010

Now,

using the above table:

P(X between 3 and 7) = 0.474

I hope this solves your doubt.

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