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3 years ago

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Mathematics

2 answers:

Alla [95]3 years ago

7 0

Each result is equally likely to occur!!

miv72 [106K]3 years ago

6 0

C. theres both a 50/50 chance that you will flip either heads or rails

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HELP ASAP PLEASE<br> List the numbers from LEAST to GREATEST <br>22/25, 8/9, and 0.8888

Digiron [165]

Answer:

I think its 22/25 , 0.8888, and then 8/9

Step-by-step explanation:

first convert them to decimals

can i get brainliest

5 0

3 years ago

3. Using the sample size of 800 and the proportion 0.47, calculate the margin of error associated with the estimate of the propo

salantis [7]

Answer:

$ME=1.96\sqrt{\frac{0.47 (1-0.47)}{800}}=0.0346$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Solution to the problem

We assume for this case a confidence level of 95%. In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The confidence interval for the mean is given by the following formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

And if we replace the values obtained we got this:

$ME=1.96\sqrt{\frac{0.47 (1-0.47)}{800}}=0.0346$

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2 years ago

If a ray divides an angle into two complementary angles, then the original angle is a right angle

lilavasa [31]

No as complementary angles add up to whisk 180 degrees, however supplementary angle would be true for this question

5 0

2 years ago

Read 2 more answers

What is 3^ 81^5=3^ please

Korvikt [17]

Answer:

Step-by-step explanation:

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2 years ago

For each function, do the following: a) state the name of the function, b) identify the independent and dependent variable, c) i

Lostsunrise [7]

Answer:

Given the function in the question

f(x) = |x-3| + 2

a) state the name of the function

Absolute value function

since it is similar to f(x) = |x|

b) identify the independent and dependent variable

x = independent variable (input variable)

f(x) or y = dependent variable (output variable)

The variable which we assign the value we call the independent variable, and the other variable is the dependent variable, since it value depends on the independent variable.

c) identify the rule

A function is an equation that has only one answer for y for every x.

d) evaluate the function

given x = -5

f(-5) = |-5 - 3| + 2

= |-8| + 2

= 8 +2

= 10

8 0

2 years ago