3. In a group of 59 traders, 26 sell gari 8 sell only rice and 15 sell only maize. 10 sell gari and rice, 16 sell rice and maize and 42 sell maize.
Each trader sells at least one of the three items. Find the number of
traders who sell
a.
gari or maize
b.
gari and maize
C.
only two items​

(co 3) the soup produced by a company has a salt level that is normally distributed with a mean of 5.4 grams and a standard deviation of 0.3 grams. the company takes readings of every 10th bar off the production line. the reading points are 5.8, 5.9, 4.9, 6.5, 5.0, 4.9, 6.2, 5.1, 5.7, 6.1. is the process in control or out of control and why? it is out of control as two of these data points are more than 2 standard deviations from the mean it is in control as the data points more than 2 standard deviations from the mean are far apart it is out of control as one of these data points is more than 3 standard deviations from the mean it is in control as the values jump above and below the mean