The standard error of the mean is 12.
The standard error of the mean points to the standard deviation of the distribution of a sample mean obtained from a population.
The standard error S.E of the mean can be calculated by using the formula:
where;
- standard deviation
= 24 - sample size n = 4
S.E = 12
Learn more about the Standard error of the mean here:
brainly.com/question/5327639?referrer=searchResults
The number of hours spent lifeguarding and clearing tables is 5.4 hours and 8.6 hours respectively
<h3>Solving inequality equation</h3>
- x = number of hours lifeguarding
- y = number of hours clearing tables
x + y ≤ 14 (1)
19x + 9y ≤ 180 (2)
From (1)
x = 14 - y
substitute into (2)
19x + 9y ≤ 180
19(14 - y) + 9y ≤ 180
266 - 19y + 9y ≤ 180
- 19y + 9y ≤ 180 - 266
- 10y ≤ -86
y ≤ -86 / -10
y ≤ 8.6 hours
x + y ≤ 14
x + 8.6 ≤ 14
x ≤ 14 - 8.6
x ≤ 5.4 hours
Learn more about inequality equation:
brainly.com/question/11234618
ANSWER:
0
EXPLANATION:
3/7=0.4
if the number to the right of decimal point is 0.5 and higher,then add 1 to the left of the decimal point.
if the number to the right is less than 0.5,leave the number to the left and remove the digit to the right decimal point.
The simplified form of the given expression is 
.
Given expression,
.
We have to simplify the above expression.
So, 
First solve for the square root,
Hence the simplified form of the given expression is .
For more details follow the link:
brainly.com/question/2719671
Answer: use Socratic the app and It’ll answer all that for you
Step-by-step explanation:
You’re welcome
