![robert7248](/avatars/47262.jpg)
robert7248
17.07.2019 •
Mathematics
Find the quotient of -85^2-27n+76 / -17n-19
Solved
Show answers
More tips
- H Health and Medicine Everything You Wanted to Know About Male Circumcision: Its Goals and Effects...
- L Leisure and Entertainment Couchsurfing: A New Way to Travel...
- G Goods and services Which TV is better - LCD or Plasma?...
- S Sport How to Learn to Pull Up on Monkey Bars?...
- L Leisure and Entertainment Scrapbooking: What is it and Why is it Becoming More Popular?...
- C Computers and Internet Where did torrents.ru move to?...
- B Business and Finance Understanding Cash Flow: What It Is and How It Works...
- C Computers and Internet What Are Peers and Seeds in Torrenting?...
- H Health and Medicine 10 Simple Techniques on How to Boost Your Mood...
- G Goods and services How to Choose the Right High Chair for Your Baby?...
Answers on questions: Mathematics
- M Mathematics A gardener made a scale drawing of a lawn with a scale a factor of 1:15. The dimensions of his drawing are 6 inches long by 3 inches wide. His partner plans to make...
- M Mathematics Which of the following circles has an area greater than 400 square meters and less than 600 square meters? Use 3.14 for π. Select all that apply. A.Radius: 8 meters...
- M Mathematics 6. Jake treaded water for 279 seconds. Colin traded water for five minutes and eight seconds. How many more seconds did Colin tread for?...
- M Mathematics Select all that apply.Which of the following shows that 5/6 = 15/18 is a proportion?...
- M Mathematics A certain open tube has a fundamental frequency of 410 Hz. What is the frequency of the third harmonic of this open tube? 1. 771 Hz 2. 410 Hz 3. 137 Hz 4. 1230 Hz...
- M Mathematics What is the equation of the line passing through points (1,1) and (3,-5)...
- M Mathematics Do the points (2, 5), (4, 3.5), and (7, 1.5) lie on the same line? How do you know? Prove your answer....
- M Mathematics In the diagram below, three lines intersect at N. The measure of ∠GNF is 60º, and the measure of ∠MNL is 47º. What is the measure, in degrees, of ∠HNK? A.47 B.60...
- M Mathematics Can someone do this for me...
- M Mathematics What is the measure of each angle...
Ответ:
5n-4
Explanation:
The given expression is:
1- Take the negative as a common factor from both the numerator and the denominator. This will give us:
2- Cancel out the negative sign (common factor) from the numerator and denominator. This will give us:
3- Factor the numerator. This wil give:
4- Finally, cancel out the (17n+19) which common in both numerator and denominator. This will give us the final expression:
5n-4
Hope this helps :)
Ответ:
The 99% confidence interval is be given by (4.872;8.628)
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".
The dataset is:
6, 9, 3, 9, 6, 6, 7, 7, 8, 9, 3, 8
2) Compute the sample mean and sample standard deviation.
In order to calculate the mean and the sample deviation we need to have on mind the following formulas:
The value obtained is![\bar X=6.75](/tpl/images/0395/7571/3131e.png)
The sample deviation obtained is![s=2.094](/tpl/images/0395/7571/249e4.png)
3) Find the critical value t* Use the formula for a CI to find upper and lower endpoints
In order to find the critical value we need to take in count that our sample size n =12 <30 and on this case we don't know about the population standard deviation, so on this case we need to use the t distribution. Since our interval is at 99% of confidence, our significance level would be given by
and
. The degrees of freedom are given by:
We can find the critical values in excel using the following formulas:
"=T.INV(0.005,11)" for![t_{\alpha/2}=-3.106](/tpl/images/0395/7571/14d79.png)
"=T.INV(1-0.005,11)" for![t_{1-\alpha/2}=3.106](/tpl/images/0395/7571/42a32.png)
The confidence interval for the mean is given by the following formula:
The next step would be calculate the limits for the interval
Lower interval :
Upper interval :
So the 99% confidence interval would be given by (4.872;8.628)
99% of the time, when we calculate a confidence interval with a sample of n=12, the true mean of rate of attractiveness of their female dates will be between the 4.872 and 8.628.