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3 years ago

Somebody help me plz

Mathematics

1 answer:

natima [27]3 years ago

5 0

Answer:

1/3

Step-by-step explanation:

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HELP PLEASE ASAP! BRAINLIESTTTTTT

cricket20 [7]

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4 years ago

Which relation is a function? (10 points and Brainliest for a correct answer)

Volgvan

B I’m pretty sure okay bye

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3 years ago

What is the sum? Complete the equation.<br> -1 5/6+(-1/3)=

Sergeu [11.5K]

Answer:

-2 1/6

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

I'm struggling on questions 7,8 and 10 please help and show work, thank you!

dusya [7]

Question 7

(37,065 - 26, 102)/(37, 065) = P/100

(10, 963)/(37, 065) = P/100

37, 065P = (10, 963)(100)

37,065P = 109, 630

P = 109, 630 ÷ 37, 065

P = 2.9577768785

P = 295.78%

Do likewise for the rest of the questions.

To change from decimal to percent, move the decimal point two places to the right and then add the percent symbol (%).

6 0

4 years ago

Find the critical value needed to construct a 95% CI of a population mean with an unknown standard deviation and a sample size o

kaheart [24]

Answer:

$t_{\alpha/2}=-2.02, t_{1-\alpha/2}=2.02$

Step-by-step explanation:

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".

In order to find the critical value we need to take in count that we are finding the critical value for the population mean and without the standard deviation, so on this case we need to use the t distribution. Since our interval is at 95% of confidence, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . We need to calculate the degrees of freedom are given by:

$df=n-1=39-1=38$

We can find the critical value using the following excel codes:

"=T.INV(0.025;38)" or "T.INV(1-0.025;38)"

And the critical values would be given by:

$t_{\alpha/2}=-2.02, t_{1-\alpha/2}=2.02$

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3 years ago