1.Let X have a normal distribution with mean = 30 and standard deviation = 10. Calculate P(X>40). Round to two decimal places. (4 pts)

2.For a standard normal variable Z, compute P(Z<1.5). Round your answer to two decimal places. (3 pts)

10. A larger standard deviation of a normal distribution indicates that the distribution becomes (2.5 pts)

a.narrower and more peaked

b.flatted and wider

c.more skewed to the right

d.more skewed to the left