Ask question

Ask question

All categories

mrs_skeptik [129]

3 years ago

15

HELP............................................................................................................................

......................................................................!?

1 answer:

weqwewe [10]3 years ago

7 0

Answer:

More than half I think its based off of a 1-10% scale

Step-by-step explanation:

it's greater than 5%

You might be interested in

Suppose the true proportion of students at a college who study abroad is 0.25. I select a random sample of 40 students from the

Julli [10]

Answer:

$\mu_{\hat p} = 0.25$

$\sigma_{\hat p}= \sqrt{\frac{0.25*(1-0.25)}{40}}= 0.0685$

$z = \frac{0.2-0.25}{0.0685}= -0.730$

And we can use the normal standard distribution or excel to find this probability and we got:

$P(\hat p$

Step-by-step explanation:

We define the parameter as the proportion of students at a college who study abroad and this value is known $p =0.25$ , we select a sample size of n =40 and we are interested in the probability associated to the sample proportion, but we know that the distirbution for the sample proportion is given by:

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

And the paramters for this case are:

$\mu_{\hat p} = 0.25$

$\sigma_{\hat p}= \sqrt{\frac{0.25*(1-0.25)}{40}}= 0.0685$

We want to find the following probability:

$P(\hat p< 0.2)$

For this case since we know the distribution for the sample proportion we can use the z score formula given by:

$z = \frac{\hat p -\mu_{\hat p}}{\sigma_{\hat p}}$

Replacing the info given we got:

$z = \frac{0.2-0.25}{0.0685}= -0.730$

And we can use the normal standard distribution or excel to find this probability and we got:

$P(\hat p$

8 0

3 years ago

Use percents to compare attendance at two concerts: 299 people attended the first concert, while 949 attended the second. pls he

Lisa [10]

At the second concert, there were 217% more people than in the first concert.

<h3>What are percentages?</h3>

Percentage can be described as a fraction out of an amount that is usually expressed as a number out of hundred. The sign used to represent percentages is %.

<h3>What is the comparison between the two concerts?</h3>

Number of people who attended the second concert compared to the first concert = (949/299) - 1 x 100 = 217%

To learn more about percentages, please check: brainly.com/question/25764815

8 0

2 years ago

To the Nearest ten-thousand, I round to 80,000. I round to 81,000 when rounded to the nearest thousand, and to 81, 220. I am a p

Amiraneli [1.4K]

Either 2,666 or 2,722
Hope this helped :)

3 0

3 years ago

Read 2 more answers

Joe's pizza shack sell $5 pizza. If Joe raises the price by 20% , what is the amount of the mark-up?

skelet666 [1.2K]

Answer:6 dollars

Step-by-step explanation:5 +20% gives you 6 which would be the ending price

4 0

2 years ago

Read 2 more answers

Which is the best estimate for the length of a car

scZoUnD [109]

The best estimate for the length of a car is about 13-15 feet wide.

3 0

3 years ago