According to the International Atomic Energy Agency, per capita
electricity consumption in Canada was 16,939 kWh in 2002. A random
sample of 51 households was monitored for one year to determine
electricity usage. If the population standard deviation of annual
usage is 3,500 kWh, what is the probability that the sample mean
will be each of the following? a.More than 18,000 kWh b.More than
17,500 kWh c.Between 17,000 kWh and 18,000 kWh d.Less than 16,000
kWh e.Less than 15,000 kWh