Answer:

Step-by-step explanation:
We translate the phrase into an equation:

Then we simplify:

Answer:
32468.41 yards
Step-by-step explanation:
11,405.59 + 12,048.82 + 9,014 = 32468.41
32468.41 yards
Answer:
Standard deviation gets smaller
Step-by-step explanation:
No. of students = 45
The class had an average of 56 words per minute (WPM) with a standard deviation of 7 WPM.

The teacher realized that the data from one student who typed 55 WPM was not entered.
So, new sum = 2520+55
New sum =2575
So, new mean =
New mean =57.22
Standard deviation is the measure of distance between observation and mean
So, if number gets closer to mean , Standard deviation gets smaller . if the numbers get bigger , Standard deviation gets bigger.
Since 55 is closer to 57.22
So, Standard deviation gets smaller
Answer:
182
Step-by-step explanation:
850-125=725
725/4=181.25
So you need at least 182 tickets sold.