A random sample of 100 automobile owners in the state of New Jersey shows that an automobile is driven on average 23,500 kilometers per year with a standard deviation of 3,900 kilometers. Assume the distribution of measurements to be approximately normal. (a) Construct a 99% two-sided confidence interval for the average number of kilometers an automobile is driven annually in New Jersey. (b) Construct a 90% two-sided confidence interval on σ, the standard deviation of kilometers an automobile is driven annually in New Jersey

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock

for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a