1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
likoan [24]
2 years ago
9

*PLEASE ANSWER TY* What is the volume of this prism?

Mathematics
1 answer:
Mice21 [21]2 years ago
6 0

Answer:

80 cube units

Step-by-step explanation:

You might be interested in
What’s the product of r and 9
Nina [5.8K]

Answer:

9r

Step-by-step explanation:

Multiply 9 and r together.

3 0
3 years ago
Read 2 more answers
A sanitation department is interested in estimating the mean amount of garbage per bin for all bins in the city. In a random sam
soldi70 [24.7K]

Answer:

a) 52.8-2.02\frac{3.9}{\sqrt{40}}=51.554    

b) 52.8+2.02\frac{3.9}{\sqrt{40}}=54.046    

c) 52.8-2.71\frac{3.9}{\sqrt{40}}=51.129  

d) 52.8+2.71\frac{3.9}{\sqrt{40}}=54.471  

e) Yes, depends of the confidence level.

At 95 % of confidence the value 54.1985 pounds is not included on the interval. At 5% of significance the statement is FALSE.

At 99 % of confidence the value 54.1985 pounds is included on the interval. So at 1% of significance the statement is TRUE.

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".

\bar X =52.8 represent the sample mean for the sample

\mu population mean (variable of interest)

s=3.9 represent the sample standard deviation

n=40 represent the sample size  

a) What is the lower limit of the 95% interval? Give your answer to three decimal places

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

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

In order to calculate the mean and the sample deviation we can use the following formulas:  

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n-1=40-1=39

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,39)".And we see that t_{\alpha/2}=2.02

Now we have everything in order to replace into formula (1):

52.8-2.02\frac{3.9}{\sqrt{40}}=51.554    

b) What is the upper limit of the 95% interval? Give your answer to three decimal places

52.8+2.02\frac{3.9}{\sqrt{40}}=54.046    

So on this case the 95% confidence interval would be given by (51.554;54.046)    

c) What is the lower limit of the 99% interval? Give your answer to three decimal places

Since the Confidence is 0.99 or 99%, the value of \alpha=0.01 and \alpha/2 =0.005, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,39)".And we see that t_{\alpha/2}=2.71

Now we have everything in order to replace into formula (1):

52.8-2.71\frac{3.9}{\sqrt{40}}=51.129  

d) What is the upper limit of the 99% interval? Give your answer to three decimal places

52.8+2.71\frac{3.9}{\sqrt{40}}=54.471  

So on this case the 99% confidence interval would be given by (51.129;54.471)    

e) Consider the claim that the mean amount of garbage per bin is 54.1985 pounds. Is the following statement true or false? The decision about the claim would depend on whether we use a 95% or 99% confidence interval: True/False

Yes, depends of the confidence level.

At 95 % of confidence the value 54.1985 pounds is not included on the interval. At 5% of significance the statement is FALSE.

At 99 % of confidence the value 54.1985 pounds is included on the interval. So at 1% of significance the statement is TRUE.

3 0
3 years ago
A positive number divided by a positive number is a positive quotient it's opposite is always what?
Arisa [49]

Answer:

When you multiply two negative numbers or two positive numbers then the product is always positive. 3 times 4 equals 12. ... When you divide a negative number by a positive number then the quotient is negative. When you divide a positive number by a negative number then the quotient is also negative.

Step-by-step explanation:

7 0
3 years ago
What is 5/7 of a 100 give your answer correct to the nearest whole number
Sati [7]

Answer:

71.4 I think this is it my dad helped

7 0
3 years ago
Read 2 more answers
How do you solve this ?
Anettt [7]

Answer:

Nice handwriting :)

look a the attached files for the answers, I coulnt type certain symbols here so i just attached images.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP I WILL MARK BRAINLEST PLEASE!!!!! 11 bounus points if u get it correct
    9·2 answers
  • Y=3/4x+8 what is the answer
    9·1 answer
  • 8(x-1) - 3x(4-x) + 6 (x+2) - 3. How can I simplify this?
    7·1 answer
  • Anyone know the answer to 2 and 3
    14·1 answer
  • Single adults: According to a Pew Research Center analysis of census data, in 2012, 20% of American adults ages 25 and older had
    11·1 answer
  • Need help fast Yesterday's afternoon temperature was 21°F. It plunged overnight to -3°F. How many degrees did the temperature dr
    7·1 answer
  • Without the aid of the Wronskian, determine whether the given set of functions is linearly independent or linearly dependent on
    9·1 answer
  • Can u help answer this
    7·2 answers
  • Find the measure of mLIK
    7·1 answer
  • Answer plz I will give correct answer as brainliest
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!