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3 years ago

Arrange these numbers in order, starting from the smallest. 3/4 , 0 , -1 , -17/20 , -4/5

Mathematics

2 answers:

Nitella [24]3 years ago

8 0

Answer:

-1, -17/20, -4/5, 0, 3/4

Nana76 [90]3 years ago

4 0

Answer:

-1, -17/20, -4/5, 0, 3/4

Step-by-step explanation:

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u suspect that the true proportion of teens who smoke is different than 15%. Conduct a hypothesis test to test your theory. Use

pentagon [3]

Answer:

There is enough statistical evidence that the proportion of teenagers that smoke is different from 15%.

Step-by-step explanation:

The question is incomplete:

<em>"Gallup survey interviewed a nationally representative sample of 785 teenagers aged 13 to 17. Seventy-one teenagers in the survey acknowledged having smoked at least once in the past week."</em>

We have this null and alternative hypothesis:

$H_0:p=0.15\\\\H_a: p\neq 0.15$

The significance level is

$\alpha=0.05$

The sample proportion is:

$\hat{p}=X/n=71/785=0.09$

The standard deviation is

$\sigma=\sqrt{\frac{p(1-p)}{n}} =\sqrt{\frac{0.15*0.85}{785}}=0.013$

The z-statistic can be calculated as:

$z=\frac{\hat{p}-p+0.5/n}{\sigma} =\frac{0.09-0.15+0.00}{0.013}=\frac{-0.06}{0.013}= -4.61$

The P-value of z=-4.61 for this test is P=0

$2P(|z|>-4.61)=0$

The P-value is smaller than the significance level, so the effect is significant.

Then, the null hypothesis is rejected.

There is enough statistical evidence that the proportion of teenagers that smoke is different from 15%.

8 0

4 years ago

Survey data involving two random samples of students at law school are shown. The surveys were taken comparing the age of studen

Crazy boy [7]

Answer:

A and C if you don't believe me look at this link down below

Step-by-step explanation:

https://fsassessments.org/assets/documents/answer-keys-paper/FSA_2018_7M_Practice-Test_Answer-Key_PBT_Final.pdf

8 0

3 years ago

Does anyone know the answer?

motikmotik

Answer:

We conclude that the area of the right triangle is:

$A\:=p^2-2p-3$

Hence, option A is correct.

Step-by-step explanation:

From the given right-angled triangle,

Base = p+1

Perpendicular = 2p-6

Using the formula to determine the area of the right-angled triangle

Area of the right triangle A = 1/2 × Base × Perpendicular

$=\frac{1}{2}\left(p+1\right)\left(2p-6\right)$

Factor 2p-6: 2(p-3)

$=\frac{\left(p+1\right)\times \:2\left(p-3\right)}{2}$

Divide the number: 2/2 = 1

$=\left(p+1\right)\left(p-3\right)$

$\mathrm{Apply\:FOIL\:method}:\quad \left(a+b\right)\left(c+d\right)=ac+ad+bc+bd$

$=pp+p\left(-3\right)+1\cdot \:p+1\cdot \left(-3\right)$

$=pp-3p+1\cdot \:p-1\cdot \:3$

$=p^2-2p-3$

Therefore, we conclude that the area of the right triangle is:

$A\:=p^2-2p-3$

Hence, option A is correct.

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3 years ago

What is the classification for this polynomial ? X^2y + 3x^3

svp [43]

I would say it is considered a binomial

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3 years ago

Pls help. Cindi wants to cover the top and sides of this box with glass tiles that

Marat540 [252]

Answer:

300 square centimeters

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3 years ago

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