Marco predicted that he would sell 180 blankets. he actually sold 150 blankets. what are the values of a and b in the table below? round to the nearest tenth if necessary
to find the 80th percentile, you have to use one of the inverse cdf functions. norm.dist is not one of them; it returns a probability. the 80th percentile the value of the random variable for which 80% of the distributions falls below that value.
norm.inv(0.80, 475, 33) returns what you want.
norm.s.inv could also work, but not with the given arguments. norm.s.inv(0.80) alone will give you the 80th percentile for the standard normal distribution (mean 0, standard deviation 1), approximately 0.8416. from here, you would convert this value to the given distribution using
norm.inv gives this value directly.
step by step explanation
3/5 converts to the decimal .06 and if 2 cups = 1 pint then the answer is 2.03 pints.