Solve the Problem Suppose a Week's Groceries in 1975 Cost $85

question 126

Multiple Choice

Solve the problem.
-A part of the Consumer Price Index (CPI) is given below: $$\begin{array} { c | c | c | c | c | c } \text { Year } & 1975 & 1980 & 1985 & 1990 & 1995 \\\hline \text { CPI } & 53.8 & 82.4 & 107.6 & 130.7 & 152.4\end{array}$$ Suppose a week's groceries in 1975 cost $85. What would these groceries cost, to the nearest dollar, 20 years later?

• A)$33
• B)$184
• C)$237
• D)$241

---

Definitions:

Sample Mean

The average value of all the measurements in a sample, calculated by adding all the values and dividing by the number of observations.

Probability Density Function

A function used to compute probabilities for a continuous random variable. The area under the graph of a probability density function over an interval represents probability.

Sampling Distribution

A statistical distribution of all possible samples that can be taken from a given population.

Standard Deviation

A quantification of how much the numbers in a collection diverge from their average, reflecting the spread of data.