All categories

3 years ago

What would be the be the answer to 3+11t

Mathematics

1 answer:

mash [69]3 years ago

5 0

Your teacher asked you to represent 3 more than 8 multiplied by a number T as an expression

(3+8)t = 11t

You might be interested in

Match the confidence level with the confidence interval for the population mean. type the correct letter in each box. equation e

Ainat [17]

Answer:

$\bar X \pm 1.96 \frac{\sigma}{\sqrt{n}}$

"=1-2*(1-NORM.DIST(1.96,0,1,TRUE))"

And we got 95%

$\bar X \pm 1.645 \frac{\sigma}{\sqrt{n}}$

"=1-2*(1-NORM.DIST(1.645,0,1,TRUE))"

And we got 90%

$\bar X \pm 2.575 \frac{\sigma}{\sqrt{n}}$

"=1-2*(1-NORM.DIST(2.575,0,1,TRUE))"

And we got 99%

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".

Solution to the problem

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

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

For this case we have the following cases:

$\bar X \pm 1.96 \frac{\sigma}{\sqrt{n}}$

And for this case we can find the % of confidence with the following excel code:

"=1-2*(1-NORM.DIST(1.96,0,1,TRUE))"

And we got 95%

For the other case:

$\bar X \pm 1.645 \frac{\sigma}{\sqrt{n}}$

And for this case we can find the % of confidence with the following excel code:

"=1-2*(1-NORM.DIST(1.645,0,1,TRUE))"

And we got 90%

For the other case:

$\bar X \pm 2.575 \frac{\sigma}{\sqrt{n}}$

And for this case we can find the % of confidence with the following excel code:

"=1-2*(1-NORM.DIST(2.575,0,1,TRUE))"

And we got 99%

8 0

3 years ago

Hector is deciding how much he should invest each year. The Automatic Method multiplies the average income by 10%, where the

Hunter-Best [27]

Answer:

Automatic Method: 6000

Exact Method: 5625

Step-by-step explanation:

I dont have one, sorry.

6 0

2 years ago

Question 20

mamaluj [8]

The main advantage of the metric system and it's use is that it Does not require knowledge of math to use it. A person having non or low level of knowledge can use it.

5 0

3 years ago

What is the gcf for 18m 45mn?

Mice21 [21]

The answer is 9

9 times 2 = 18

9 times 5 = 45

8 0

3 years ago

Read 2 more answers

Suppose that for a certain company C(x)=35x+300,000 represents the total cost function, and R(x)=75x represents the total rev

enyata [817]

Answer:

40x - 300,000

7,500

Step-by-step explanation:

profit = revenue - cost

p(x) = 75x - (35x + 300,000)

p(x) = 40x - 300,000

Break even is when profit is zero

40x - 300,000 = 0

40x = 300,000

x = 7,500

4 0

3 years ago