Answer:
Step-by-step explanation:
Sara sold $3350 in ads,
Kenny sold $1368, and
Leila sold $456
(a)
total sale=3350+1368+456=$5174
Sara's fraction=3350/5174=0.6475
Kenny's fraction=1368/5174=0.2644
Leila's fraction=456/5174=0.0881
(b)
total bonus=$150
Sara's bonus=150*0.6475=$97.12
Kenny's bonus=150*0.2644=$39.66
Leila's bonus=150*0.0881=$13.22
<h2>
Answer with explanation:</h2>
Let p be the population proportion of parents who had children in grades K-12 were satisfied with the quality of education the students receive.
Given : Several years ago, 39% of parents who had children in grades K-12 were satisfied with the quality of education the students receive.
Set hypothesis to test :

Sample size : n= 1055
Sample proportion : 
Critical value for 95% confidence : 
Confidence interval : 

Since , Confidence interval does not contain 0.39.
It means we reject the null hypothesis.
We conclude that 95% confidence interval represents evidence that parents' attitudes toward the quality of education have changed.
Answer:
The answer is "96.864 ml".
Step-by-step explanation:
In this question, the formula of
.
( where X is the mean, t is the coefficient, and s is the mean difference error)
As a result, only 2.5% of containers might include less than 100 ml of volume, its trust coefficient could indeed be used in accordance with 95%, which is
.
And it can take
to have been the full value the standard infinite: 

Consequently, if the standard error is
, a similar amount should be used to fill

Answer:
Nopes 3²+4²≠12²
Step-by-step explanation:
12²=144
3²+4²=
9+16=25
25≠144
To make it easier to see exactly WHY 3²+4²≠12² you can spread out the numbers in the equation.
(3·3)+(4·4)≠(12·12)
When solving equations you use PEMDAS (Parenthesis Exponents Multiplication Division Addition Subtraction). You have to solve in THAT ORDER.