this month, the tinsville petting zoo is trying to determine how long guests stay when they visit the zoo…

this month, the tinsville petting zoo is trying to determine how long guests stay when they visit the zoo. employees randomly survey 12 guests each day as they exit about how many hours they spent at the zoo that day. here are the data for one day: 2 1.5 3.5 2 1.5 2.5 4 3 3.5 2 1 3.5 what is the mean number of hours guests in this survey spent at the petting zoo? hours

this month, the tinsville petting zoo is trying to determine how long guests stay when they visit the zoo. employees randomly survey 12 guests each day as they exit about how many hours they spent at the zoo that day. here are the data for one day: 2 1.5 3.5 2 1.5 2.5 4 3 3.5 2 1 3.5 what is the mean number of hours guests in this survey spent at the petting zoo? hours

Answer

Explanation:

Step1: Recall mean formula

The mean $\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}$, where $x_{i}$ are data - points and $n$ is the number of data - points. Here $n = 12$.

Step2: Calculate the sum of data

$\sum_{i=1}^{12}x_{i}=2 + 1.5+3.5 + 2+1.5+2.5+4+3+3.5+2+1+3.5$ $=(2 + 2+2+2)+(1.5+1.5)+(3.5+3.5+3.5+3.5)+2.5 + 4+1$ $=8 + 3+14+2.5 + 4+1$ $=32.5$.

Step3: Calculate the mean

$\bar{x}=\frac{32.5}{12}\approx2.71$

Answer:

$2.71$