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3 years ago

Answer please.. I need help

Mathematics

1 answer:

allsm [11]3 years ago

6 0

9.) 1 / [3]
When you set the denominators of 2 / 5 and 1 / 3, equal to each other, you receive a denominator of 15, the only denominator the two have in common

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According to a study conducted by an organization, the proportion of americans who were afraid to fly in 2006 was 0. 10. A rand

algol13

According to the the concept of hypothesis testing, there is no evidence that the proportion of Americans who are afraid to fly has decreased.

Hypothesis testing:

Basically, in math hypothesis, it test the population on the basis of the sample data taken from the population using a simple random sampling.

Given,

According to a study conducted by an organization, the proportion of Americans who were afraid to fly in 2006 was 0. 10. A random sample of 1300 Americans results in 117 indicating that they are afraid to fly.

Now, we need to explain why this is not necessarily evidence that the proportion of Americans who are afraid to fly has.

While we looking into the given question,

Sample size, n = 1300

Number of Americans who were afraid to fly, x = 117

Now, we have to computing the sample proportion of Americans who afraid to fly,

Therefore, p = 117 / 1300 = 0.09

Then the Formulation of Hypotheses is written as,

Here the Null Hypothesis: H0: p≥0.10

And the alternative Hypothesis: Ha: p<0.10

Then the Left-tailed test of Test statistic is written as,

Here Let us assume that the level of significance, α = 0.05.

Then the Critical value, z≈−1.645

And the Decision rule is written as

If the value of |z|<|z0.05|≈1.645: Do not reject the null hypothesis.

Otherwise If value of |z|≥|z0.05|≈1.645: Reject the null hypothesis.

To know more about Hypothesis testing here.

brainly.com/question/28920252

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5 0

10 months ago

Please Please please help me with this answer asap

Ahat [919]

The answer is 19 packages of popsicles. You would multiply 19 and 3 and get 57. After you get 57 you subtract 3 and end up with 54

8 0

3 years ago

i need 8 and 9 to be done if this isnt cropped correctly, giving a pretty good amount of points for it

Akimi4 [234]

Answer:

question number 8 has a <u>positive slope</u> is the the answer for number 8 and the rate for number 8 is that counts by 2's on the X axis and on the Y axis it counts by 10's

and question number 9 has a <u>negative slope</u> is the answer for number 9 and the rate of the graph for number 9 is that it decreases by 3's on the X axis and on the Y axis it goes up by 6's

Step-by-step explanation:

8 0

3 years ago

What’s the reciprocal of 5 and 11/12

Stels [109]

Answer:

1/5 and 12/11

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

The height of a triangle is 4 sqrt 3 . What is the perimeter of the equatorial triangle?

Karo-lina-s [1.5K]

The perimeter of the equatorial triangle is 24 units

<h3><u>Solution:</u></h3>

Given that,

An equilateral triangle has an height equal to $4 \sqrt{3}$

The triangle is shown below

From Triangle ABC in the shown figure AD $=4 \sqrt{3}$

Let the sides of the equilateral triangle be ‘a’

AB = BC = a

Since, it is an equilateral triangle we get,

BD = DC = a ÷ 2

Now, using Pythagoras Theorem in Triangle ABD,

The Pythagorean theorem is this: In a right triangle, the sum of the squares of the lengths of the two legs is equal to the square of the length of the hypotenuse.

$\mathrm{AB}^{2}=\mathrm{BD}^{2}+\mathrm{AD}^{2}$