Answer:
The estimate is

Step-by-step explanation:
From the question we are told that
The sample mean is 
The sample size is n = 24
The standard deviation is 
Given that the confidence level is 90% the level of significance is mathematically represented as



Next we obtain the critical value of
from the normal distribution table.The value is

The reason we are obtaining critical value of
instead of
is because 
represents the area under the normal curve where the confidence level interval (
) did not cover which include both the left and right tail while
is just the area of one tail which what we required to calculate the margin of error
NOTE: We can also obtain the value using critical value calculator (math dot armstrong dot edu)
Generally the margin of error is mathematically represented as

substituting values


The estimate of how much the drug will lower a typical patient's systolic blood pressure(using a 90% confidence level) is mathematically represented as

substituting values


ANSWER:
n = 1.05n divided by 105 times 100
OR
n = (the number of students at the END of the school year) divided by 105 times 100
WORKING OUT:
1.05n = 651 students
1n = 651/105 times 100 = ANSWER
Answer:
I would help you
Step-by-step explanation:
But I'm really lazy and I really don't like math. I'm not good at it and I think I failed it last semester. true story bro.
we know that
<u>Unit Rate</u> is the ratio of two measurements in which the second term is one
so
to find the unit rate divide
by 

therefore
<u>the answer is</u>
The unit rate is 