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
xenn [34]
2 years ago
12

Would anybody give the right answer

Mathematics
2 answers:
BARSIC [14]2 years ago
8 0

Answer:

i think so

Step-by-step explanation:

horrorfan [7]2 years ago
5 0

Answer:Same, people sometimes give the wrong answer on purpose I hate that!

Step-by-step explanation:

You might be interested in
We considered the differences between the temperature readings in January 1 of 1968 and 2008 at 51 locations in the continental
mr Goodwill [35]

Answer:

1.1-2.02\frac{4.9}{\sqrt{50}}=-0.30    

1.1+2.02\frac{4.9}{\sqrt{50}}=2.50    

So on this case the 90% confidence interval would be given by (-0.30;2.50)  

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=1.1 represent the sample mean for the sample  

\mu population mean (variable of interest)

s=4.9 represent the sample standard deviation

n=51 represent the sample size  

Solution to the problem

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

df=n-1=51-1=50

Since the Confidence is 0.90 or 90%, the value of \alpha=0.1 and \alpha/2 =0.05, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.05,50)".And we see that t_{\alpha/2}=2.02

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

1.1-2.02\frac{4.9}{\sqrt{50}}=-0.30    

1.1+2.02\frac{4.9}{\sqrt{50}}=2.50    

So on this case the 90% confidence interval would be given by (-0.30;2.50)    

8 0
3 years ago
-3 (2m+5)+8=5 (-2m+1)
Zanzabum
I just worked out the problem twice and got -4.5 both times.
3 0
3 years ago
Read 2 more answers
What is the value of the expression below when y=2 AND z=8?<br> 8y-z
Kisachek [45]

Answer:

Step-by-step explanation:

4 0
3 years ago
Suppose 72 gallons of water came out of a pipe in 8 minutes.
Masteriza [31]

Answer:

9 gallons of water per minute

Step-by-step explanation:

First identify what you know:

1) The pipe was flowing water for eight minutes.

2) In that eight minutes, 72 gallons of water came out.

So, if 72 gallons of water came out in eight minutes, how many gallons flowed out in a single minute? Well, assuming that the flow rate was consistent, then simply divide the total number of gallons that flowed out, by the number of minutes the pipe was open!

72/8 = 9

The pipe released 9 gallons of water per minute, thus resulting in 72 gallons of water in 8 minutes!

Hope this helps! :)

4 0
2 years ago
which descriptions from the list below accurately describe the relationship between angle QRS and angle TUV check all that apply
Alex777 [14]

yes ,you are correct

ans is

D. similar

5 0
3 years ago
Other questions:
  • In ΔABC, centroid D is on median AM. AD = x + 3 and DM = 2x - 1. Find AM.
    15·2 answers
  • Consider the function shown.
    13·1 answer
  • What does s equal <br>8s-(8+6s)=20
    6·1 answer
  • how much must you deposit in an account that pays 8% annual interest compounded monthly to have a balance of $1,000 after one ye
    8·1 answer
  • delia drove her car 179 miles. The car used 6.04 gallons of gasoline on the drive. Estimate the cars gasoline milage in miles pe
    5·1 answer
  • What is the scale factor in the dilation?<br>​
    12·1 answer
  • What is the name of an angle that is formed by one side of a triangle and the extension of an adjacent side?
    7·2 answers
  • Simplify
    14·1 answer
  • Solve for a. 15-a/12=22
    11·2 answers
  • PLEASE HELP ASAP<br><br> What is the missing statement for the sixth step in the proof below?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!