# Question: a Draw a normal curve with 20 and

(a) Draw a normal curve with µ = 20 and σ = 3.

(b) Shade the region that represents P(22 ≤ X ≤ 27) and ﬁnd the probability.

(b) Shade the region that represents P(22 ≤ X ≤ 27) and ﬁnd the probability.

**View Solution:**## Answer to relevant Questions

Suppose that the talk time on the Apple iPhone is approximately normally distributed with mean 7 hours and standard deviation 0.8 hour. (a) What proportion of the time will a fully charged iPhone last at least 6 hours? (b) ...Imagine that a friend of yours is always late. Let the random variable X represent the time from when you are supposed to meet your friend until he shows up. Suppose your friend could be on time (x = 0) or up to 30 minutes ...One graph in the ﬁgure at the top of the next column represents a normal distribution with mean µ = 8 and standard deviation σ = 2. The other graph represents a normal distribution with mean µ = 14 and standard ...Elena conducts an experiment in which she ﬁlls up the gas tank on her Toyota Camry 40 times and records the miles per gallon for each ﬁll- up. A histogram of the miles per gallon indicates that a normal distribution with ...Determine the total area under the standard normal curve (a) to the left of z = -2 or to the right of z = 2 (b) to the left of z = -1.56 or to the right of z = 2.56 (c) to the left of z = -0.24 or to the right of z = ...Post your question