Chapter 13.5, Problem 3CYU

(a)

To determine

To Find:Percent of U.S cities had recorded high temperature of ${109}^{°}F$ or less

Answer to Problem 3CYU

  $23.5\%$

Explanation of Solution

Given:The histogram shown below shows the record high temperatures for several U.S cities.

  

ValumeAbout what percent of U.S cities had recorded high temperature of ${109}^{°}F$ or less.

Total number of cities

  $\begin{array}{l}3+9+17+12+7+2+1\\ =51\text{ cities }\end{array}$

= Number of cities which has a range of ${\text{(100-104)}}^{°}F$ and ${\text{(105-109)}}^{°}F$

  $\begin{array}{l}=\left[\frac{3}{51}+\frac{9}{51}\right]\times 100\%\\ =23.5\%\end{array}$

Hence, $23.5\%$ of U.S cities had recorded high temperature of ${109}^{°}F$ or less

(b)

To determine

To Find:How likely is it that a record high temperature is ${125}^{°}F$ or higher?

Answer to Problem 3CYU

  $5.88\%$

Explanation of Solution

Given:The histogram shown below shows the record high temperatures for several U.S cities.

  

Total number of cities

  $\begin{array}{l}3+9+17+12+7+2+1\\ =51\text{ cities }\end{array}$

= Number of cities which has a range of ${\text{(125-129)}}^{°}F$ and ${\text{(130-134)}}^{°}F$

  $\begin{array}{l}=\left[\frac{2}{51}+\frac{1}{51}\right]\times 100\%\\ =5.88\%\end{array}$

Hence, $5.88\%$

(c)

To determine

To Find:The greatest temperature.

Answer to Problem 3CYU

  ${134}^{°}F$

Explanation of Solution

Given:The histogram shown below shows the record high temperatures for several U.S cities.

  

What is the greatest temperature?

From the data

The greatest possible temperature is ${134}^{°}F$