1. The random variable X has the discrete probability distribution shown below: X −2 −1 0

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answerhappygod
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1. The random variable X has the discrete probability distribution shown below: X −2 −1 0

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1. The random variable X has the discrete probabilitydistribution shown below:
X −2 −1 0 1 2
p(X) 0.10 0.15 0.40 0.30 0.05
Find p(−1≤ X < 2).
2. Current estimates suggest that only 20% of home-basedcomputers have access to on-line services. Suppose 25 people withhome-based computers were randomly and independently sampled.Suppose X is the number of people with home-based computers thathave on-line services in the above sample of 25people. Find the probability that four or fewer thanfour have access to on-line services.
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