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3 years ago

Wat iz 1+1 pleas ined hewp

Mathematics

2 answers:

Rainbow [258]3 years ago

5 0

Answer:

Step-by-step explanation:

Aleks04 [339]3 years ago

3 0

I cant be sure, but I think it's 2.

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A graph of what has space between possible data values

MakcuM [25]

Answer:

A discrete graph is a graph that is composed of distinct isolated points. A discrete graph has space between possible data values

Step-by-step explanation:

i hope this helps :)

6 0

4 years ago

Read 2 more answers

A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the

Lubov Fominskaja [6]

Answer:

The required sample size for the new study is 801.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

25% of all adults had used the Internet for such a purpose

This means that $\pi = 0.25$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

What is the required sample size for the new study?

This is n for which M = 0.03. So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.03 = 1.96\sqrt{\frac{0.25*0.75)}{n}}$

$0.03\sqrt{n} = 1.96\sqrt{0.25*0.75}$

$\sqrt{n} = \frac{1.96\sqrt{0.25*0.75}}{0.03}$

$(\sqrt{n})^2 = (\frac{1.96\sqrt{0.25*0.75}}{0.03})^2$

$n = 800.3$

Rounding up:

The required sample size for the new study is 801.

4 0

3 years ago

A sample of restaurants in a city shows that the average cost of an appetizer is $6.32 with a standard deviation of

iren2701 [21]

The answer would be b

6 0

3 years ago

Write the value of the expression 4^5/4^5

Allushta [10]

<span>4^5/4^5
= 4^(5-5)
= 4^0
= 1

Any number to the 0 power is equal 1, except 0.</span>

6 0

3 years ago

Consider the equation below.

MissTica

Answer:

A) (x - 5)² = 36

Step-by-step explanation:

x² - 10x - 11 = 0

A) CORRECT

(x - 5)² = 36

x² - 10x + 25 = 36

x² - 10x + 25 - 36 = 0

x² - 10x - 11 = 0

8 0

3 years ago