Answer:
12
Step-by-step explanation:
(3+x)+x=27
2x+3=27
2x=24
x=12
Answer:
Option E, two-proportion z test should be used to determine whether these data provide sufficient evidence to reject the hypothesis that the proportion of shoppers at the suburban mall who had been to a movie in the past month is the same as the proportion of shoppers in the large downtown shopping area who had been to a movie in the past month
Step-by-step explanation:
The complete question is
In a random sample of 60 shoppers chosen from the shoppers at a large suburban mall, 36 indicated that they had been to a movie in the past
month. In an independent random sample of 50 shoppers chosen from the shoppers in a large downtown shopping area, 31 indicated that
they had been to a movie in the past month. What significance test should be used to determine whether these data provide sufficient
evidence to reject the hypothesis that the proportion of shoppers at the suburban mall who had been to a movie in the past month is the same
as the proportion of shoppers in a large downtown shopping area who had been to a movie in the past month?
A one-proportion z interval B two-proportion z interval
B two-proportion z interval
C two-sample t test D one-proportion z test
D one-proportion z test
E two-proportion z test
Solution
Two proportion z test is used to compare two proportions. In this test the null hypothesis is that the two proportions are equal and the alternate hypothesis is that the proportions are not the same. The random sample of populations serve as two proportions.
Hence, option E is the best choice of answer
Step-by-step explanation:
Growth in population each year = 3%(1500)
= 3/100 × 1500
= 3 × 15
= 45
Therefore, the growth in population in 6 years
= 6 × 3%(1500)
= 6 × 45
= 270
Hence, the population after 6 years = 1500 + 270
= 1770
5 of the text is an article about
endangered species, what fraction of the cover page is the article about endangered species
Answer:
The answer is 0.15
Step-by-step explanation:
In this 2/5 of 3/8 is about endangered species
Therefore to obtain the answer we need to multiply the two fractions
2/5 × 3/8
Fraction of the cover page about endangered species is therefore = 2/5 × 3/8
= 0.15
Answer:
0; 2; 6; 0 or -1
Step-by-step explanation:
If the question says "f(a)=" they are asking for the y value with the given x such as the two first ones.
If it's "f(x)=a than x=" they are asking you what x is when the (bolded) x is a given value.
Answer:
-21
Step-by-step explanation:
if for s(n) = -3-3n
then s(6) = -3-3*6 = -3-18 = -21
Answer:
Step-by-step explanation:
The four sides of the quadrilateral touches the circle. This means that the opposite angles of the quadrilateral are supplementary.
It means that the sum of the angles is 180 degrees From the given diagram,
Angle B + angle R = 180
Angle B = 180 - 85
Angle B = 95 degrees
Angle D + angle I = 180
Angle D = 180 - 117
Angle D = 63 degrees
Answer
<B is 95, and <D is 63
Step-by-step explanation:
Opposite angles have sum 180, so angle of the B is 180-85=95, and angle of the D is 180-117=63