Question

c. Let us assume that x has a distribution that is approximately normal. What is the probability that x is between $12 and $18

Answer 1

0.0066

Explanation:

The x has a distribution that is approximately normal. For normal distribution the probability of x will be,

u = 12 and 18

P (12
`\leq`
`x`
`\leq` 18)

P (- 2.3
`\leq`
`x`
`\leq` 2.85 )

P (0.9912 - 0.9978)

= 0.0066