Umm i dont get none of this to be honest

2 answers:

7 0

Are you talking about brainly? If so, Brainly is an app/website where you can ask questions about your homework/ school work. When you first start on brainly you get 20 points? And each question you ask costs points. To get more points, you have to answer other people’s questions. Hope this helped!

Ilia_Sergeevich [38]3 years ago

6 0

Wait can u show us the pic?

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3 years ago

What is a solution to 10 – x < 7? Group of answer choices 1 2 3 4

timama [110]

Answer:

Step-by-step explanation:

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3 years ago

In 2012, Gallup asked participants if they had exercised more than 30 minutes a day for three days out of the week. Suppose that

nirvana33 [79]

Answer:

There is 95% confidence that the population proportion of people from Vermont who exercised for at least 30 minutes a day 3 days a week is between 55.9% and 74.7%.

Step-by-step explanation:

We have to answer the population proportion for Vermont.

We can only do it by a confidence interval, as we only have information from a sample.

This sample, of size n=100, has a proportion p=0.653.

The degrees of freedom are:

$df=n-1=100-1=99$

We will calculate a 95% confidence interval, which for df=99 has a critical value of t of t=1.984.

The margin of error can be calculated as:

$E=t*\sigma_p=t\sqrt{\dfrac{p(1-p)}{n}}=1.984\sqrt{\dfrac{0.653*0.347}{100}}\\\\\\E=1.984*\sqrt{0.00226}=1.984*0.0476=0.094$

Then, the upper and lower bounds of the confidence interval are:

$LL=p-E=0.653-0.094=0.559\\\\UL=p+E=0.653+0.094=0.747$

Then, we can say that there is 95% confidence that the population proportion of people from Vermont who exercised for at least 30 minutes a day 3 days a week is between 55.9% and 74.7%.

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4 years ago

A line parallel to y=3/5x-3 and passing through the point (15,-2)

nlexa [21]

$\huge\boxed{y+2=\frac{3}{5}(x-15)}$