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Setler [38]
2 years ago
7

35. A carpenter is to build a concrete ramp with an 18°

Mathematics
1 answer:
ch4aika [34]2 years ago
4 0
I think no ! Hope this helps ..... what class is this for
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What is your favorite color? A large survey of countries, including the United States, China, Russia, France, Turkey, Kenya, and
Ipatiy [6.2K]

Answer:

Step-by-step explanation:

We would set up the hypothesis test.

For the null hypothesis,

p = 0.24

For the alternative hypothesis,

p ≠ 0.24

This is a two tailed test

Considering the population proportion, probability of success, p = 0.24

q = probability of failure = 1 - p

q = 1 - 0.24 = 0.76

Considering the sample,

Sample proportion, P = r/n

Where

r = 12

n = 52

P = 12/52 = 0.23

We would determine the test statistic which is the z score

z = (P - p)/√pq/n

z = (0.23 - 0.24)/√(0.24 × 0.76)/52 = - 0.17

Recall, population proportion, P = 0.24

The difference between sample proportion and population proportion(p - P) is 0.24 - 0.23 = 0.01

Since the curve is symmetrical and it is a two tailed test, the p for the left tail is 0.24 - 0.01 = 0.23

the p for the right tail is 0.24 + 0.01 = 0.25

These proportions are lower and higher than the null proportion. Thus, they are evidence in favour of the alternative hypothesis. We will look at the area in both tails. Since it is showing in one tail only, we would double the area

From the normal distribution table, the area below the test z score in the left tail 0.43

We would double this area to include the area in the right tail of z = 0.17 Thus

p = 0.43 × 2 = 0.86

The level of significance is 5%

Since alpha, 0.05 < than the p value, 0.86, then we would fail to reject the null hypothesis. Therefore, at 5% significance level, this information does not imply that the color preference of all college students is different (either way) from that of the general population.

7 0
3 years ago
If one gallon of paint covers 825 sq. ft., how much paint is needed to cover 2640 sq. ft.
Ray Of Light [21]
3.2 gallons of paint is needed since 2640 divided by 825 = 3.2 
6 0
3 years ago
Read 2 more answers
Provide an example of an operation that is commutative.Provide an example of an operation which is not commutative
kompoz [17]
Addition is commutative.
3 + 4 = 7. = 4 + 3

Division is not commutative.
3 / 4 is not = 4 / 3.
4 0
2 years ago
There were 36 cookies in a package. Chase invited 6 friends to his birthday party. How many cookies will each person get if all
podryga [215]
7 cookies each without surpassing 36.
4 0
3 years ago
What is the Root of quantitive
Tresset [83]

The root of an equation is the same as the solution to the equation.

:)
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3 years ago
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