A general statement is made that an error occurs in 10% of all retail transactions. We wish to evaluate the truthfulness of this figure for a particular retail store, say store A. Twenty transactions of this store are randomly obtained. Assuming that the 10% figure also applies to store A and let X be the number of retail transactions with errors in the sample a. The probability distribution function (pdf) of X is binomial. Identify the parameters n and p.
b. Calculate the expected value of X.
c. Calculate the variance of X.
d. Find the probability exactly 2 transactions sampled are in error.
e. Find the probability at least 2 transactions sampled are in error.
f. Find the probability that no more than one transaction is in error.
g. Would it be unusual if 5 or more transactions were in error?

step-by-step explanation:

in which figure is point g a centroid

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

6 and 24

step-by-step explanation:

6 x 4 = 24