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.
All you have to do is divide 150 by 18 and that will get you how many meters Pete drives per second
150 ÷ 18
8.3333333333333333333
so...
8.3 m/s (B)
Hope this helped!
~Just a girl in love with Shawn Mendes
It would 9x+20 because u have to distribute
Answer: C
Explanation: They are the same exact shapes, the one on the right is slightly rotated and scaled smaller but other than that they are the most similar
Answer:
there were 12 pencils in each packet
