Answer:
Step-by-step explanation:
Since the population standard deviation 
, is known, we use the z confidence interval for the mean.
This is given by:
For a 95% confidence interval we use 
.
It was also given that: 
, 
and 
Let us substitute the values to get:
<u>Interpretation:</u>
We can say with 95% confidence that the interval between 1463.3 and 1580.7 SAT scores contains the population mean based on the sample 125 SAT scores.
Answer: They read for a equal amount of time.
Step-by-step explanation:
10/12 simplifies to 5/6, making these equal.
Proof:
10 divided by 2 equals 5, and 12 divided by 2 equals 6. This means that they are equal.
Answer:
Root( c square -9)
Step-by-step explanation:
The answer u have is the answer for a^2
Answer:
Caras hourly wage is $10.08 after 3 years
Step-by-step explanation:
4% of 9
0.04 x 9 = 0.36
then you multiply 0.36 by 3 because you are solving for 3 years.
0.36 x 3 = 1.08
then you add 1.08 to 9 because Cara's wage goes up $1.08 in 3 years
1.08 + 9 = 10.08
answer:
Cara's hourly wage is $10.08 after 3 years of working
Area is 9 and the and the circumstances and 19
