This is a quadratic in the form of ax squared +bx +c
So
a = 3
b = -5
c = 2
Hope this helps!
Answer:
WELL I DONT SEE THE PICTUE BUT WHATS THE PROBLEM?
Step-by-step explanation:
Answer:
7.16
Step-by-step explanation:
Step-by-step explanation:
o - odd number
e - even number
n + e =o, if n is odd...rule 1
n + e = e, if n is even...rule 2
n × o = o, if n is odd...rule 3
n × o = e, if n is even...rule 4
thus if 3n +6 = o,
then 3n must be odd, following rule 1
=> 3n = o, then n is an odd number, following rule 3
Answer:
We need a sample of at least 752 students.
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 of the interval is:

90% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
How large of a sample must she have to get a margin of error less than 0.03
We need a sample of at least n students.
n is found when M = 0.03.
We have no information about the true proportion, so we use
.






Rounding up
We need a sample of at least 752 students.