The number of Reese's Pieces (X) contained in a 4-ounce box is approximated by the following probability distribution. X Px 150 5.4% 151 21.6% 152 34.0% 153 26.7% 154 10.5% 155 1.8% For a random sample of six 4-ounce boxes of Reese's Pieces, find the narrowest interval that would accurately predict the mean number of Reese's Pieces per box 95% of the time