For the population of farm workers in New Zealand, suppose that weekly income has a distribution that is skewed right with a mean of p. = $500 (N. Z. dollars) and a standard deviation of o = $160. A survey of 100 farm workers is taken, including information on their weekly income. The probability that the mean weekly income of these 100 workers is between $480 and $520 is ＿ a...Normal cdf(480, 520, 0, 16)
b...normal cdf(480, 520, 500, 1)
c.normalcdf(520, 480, 50, 16)
d.normal cdf(480, 520, 500, 16)
e.1 - normalcdf(480, 520, 500, 16)

plz need help number 1 2 3 4 5 are pic