Answer:
Question is not fully addressed
Step-by-step explanation:
Please put the full question otherwise, i cannot answer it
Answer:
x < 7
Step-by-step explanation:
0.5 + 2x < 14.5
2x < 14.5 - 0.5
2x < 14
x < 14 ÷ 2
x < 7
( To solve this is basically solving an equation. It's just that that instead of an equal sign, a greater than, less than, greater than or equal to or a less than or equal to sign is present. )
Answer:
All you have to do is multiply 45 by 0.70. You will get 31.5, then you subtract 31.5 and 45 to get the answer: $13.50
Step-by-step explanation:
Answer:
-28 for the first box and for the second box it is -4
Step-by-step explanation:
Answer:
We need a sample size of at least 383.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
The margin of error is:
85% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
How large a sample would be required in order to estimate the fraction of tenth graders reading at or below the eighth grade level at the 85% confidence level with an error of at most 0.03
We need a sample size of at least n.
n is found with 
Then
Rounding up
We need a sample size of at least 383.
