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3 years ago

HOW U GIVE BRAINLEST

Mathematics

2 answers:

satela [25.4K]3 years ago

7 0

Answer:

On the question their is a yellow crown you just tap on it

Step-by-step explanation:

Ierofanga [76]3 years ago

7 0

There should just be a yellow crown u can tap on.

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The bike you have been saving for is discounted 15%. You have $600 saved to purchase it. The original, non-discounted price of t

Viefleur [7K]

Answer:

16.67 or 17 when rounded to nearest dollar

Step-by-step explanation:

$650 x .85 (100%-15% discount) = 552.50 cost of bike on sale

552.50 x 1.0558 (100% + 5.58% tax) = 583.33 cost with tax added.

$600 - 583.33 = $16.67 money left over

7 0

3 years ago

A cyclist rode the first 30-mile portion of his workout at a constant speed. For the 24-mile cooldown portion of his workout, he

LuckyWell [14K]

what math is this could you tell me what math this is plz

3 0

3 years ago

Which statements accurately describe the function f(x) = 2(727)" ? Select three options.

MAVERICK [17]

Answer:

i cant see it its blorry

Step-by-step explanation:

4 0

3 years ago

Assume that population mean is to be estimated from the sample described. Use the sample results to approximate the margin of er

Vikentia [17]

Answer:

$ME=1.998 \frac{4}{\sqrt{64}}=0.999 \approx 1$

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".

$\bar X =69$ represent the sample mean for the sample

$\mu$ population mean

s=4.0 represent the sample standard deviation

n=64 represent the sample size

Assuming the X follows a normal distribution

$X \sim N(\mu, \sigma)$

The sample mean $\bar X$ have the following distribution:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

The margin of error for the sample mean is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

Since we have the sample standard deviation we can estimate the margin of error like this:

$ME=t_{\alpha/2}\frac{s}{\sqrt{n}}$

The next step would be find the value of $\z_{\alpha/2}$ , $\alpha=1-0.95=0.05$ and $\alpha/2=0.025$

We can find the degrees of freedom like this:

$df=n-1=64-1=63$

And we can find the critical value with the following code in excel for example: "=T.INV(0.025,63)" and we got:

$t_{\alpha/2}=\pm 1.998$

And the margin of error would be :

$ME=1.998 \frac{4}{\sqrt{64}}=0.999 \approx 1$

3 0

3 years ago

Part D:

Arisa [49]

Answer:

<h2>Adults and Seniors tendo to by more Unlimited Meals tickets</h2>

Step-by-step explanation:

The relation between the park guest and the type to ticket is that Adults and Seniors tendo to by more Unlimited Meals tickets, because they don't play that much in the park, children do.

Therefore, there's a relation that aroun Unlimited Meals tickets and Adults-Seniors costumers: they tend to get these tickest more than children.

7 0

4 years ago