Question: The percentage of people to the nearest 10 responding to

The percentage of people (to the nearest 10) responding to an advertisement is a random variable with the following probability distribution:
x(%) ... P(x)
0 ...... 0.10
10 ...... 0.20
20 ...... 0.35
30 ...... 0.20
40 ...... 0.10
50 ...... 0.05
a. Show that P(x) is a probability distribution.
b. Find the cumulative distribution function.
c. Find the probability that more than 20% will respond to the ad.



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  • CreatedJune 03, 2015
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