y (Number of employees) 6 10 9 5 8 14 13 16 a.) Draw a scatter diagram for the data b.) Find the equation of the least-squares line. Plot the line on the scatter diagram for part (a). c.) Find the sample correlation coefficient r and the coefficient of determination ? ? .
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Each box of Healthy Crunch breakfast cereal contains a coupon entitling you to a
free package of garden seeds. At the Healthy Crunch home office, they use the weight
of incoming mail to determine how many of their employees are to be assigned to
collecting coupons and mailing out seed packages on a given day. (Healthy Crunch has
a policy of answering all its mail on the day it is received.)
Let x = weight of incoming mail and y = number of employees required to process the
mail in one working day. A random sample of 8 days gave the following data:
x (lb) 11 20 16 6 12 18 23 25
y (Number of employees) 6 10 9 5 8 14 13 16
a.) Draw a
b.) Find the equation of the least-squares line. Plot the line on the scatter diagram for
part (a).
c.) Find the sample
?
.
d.) If Healthy Crunch receives 15 pounds of mail, how many employees should be
assigned mail duty that day? Show work
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