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
fgiga [73]
3 years ago
6

The standard deviation for a set of data is 8.5. The mean is 215.

Mathematics
1 answer:
mixas84 [53]3 years ago
6 0
The answer to your question is 2.5 hope this helps
You might be interested in
Pls help asap math isn't my thing
stira [4]

Your answer is in the picture above

6 0
3 years ago
3/4 x 1/8 in simples form
Zielflug [23.3K]

Answer:

3/32

Step-by-step explanation:

To get this answer, multiply the numerators together and the denominators together

3x1=3

4x8=32

3/32

5 0
3 years ago
What is the conditional probability that exactly four heads appear when a fair coin is flipped five times
cestrela7 [59]

Answer:

5/32

Step-by-step explanation:

If a coin if flipped five times with four heads, then it has exactly one tail. The number of way to arrange four heads and one tail are as follows:

T H H H H

H T H H H

H H T H H

H H H T H

H H H H T

Essentially, there are five way because there are five "positions" where the tail could be.

Then, you need to find the total amount of possibilities for flipping a coin five times. Every time you flip it, there are two possibilities- heads and tails. Therefore, for five flips, the total amount of possibilities is

2x2x2x2x2 = 32

You know that

probability= # of desired outcome

                   ----------------------------------  

                      # of total outcomes

So the probablity is 5/32.

8 0
3 years ago
The volume of a rectangular prism is 57 cubic inches. What is the volume of a
BARSIC [14]

Answer:I'd sayb

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Suppose a local manufacturing company claims their production line has a variance of less than 9.0. A quality control engineer d
Alexxx [7]

Answer:

\chi^2 =\frac{35-1}{9} 2.12^2 =16.979

p_v =P(\chi^2

If we compare the p value and the significance level provided we see that p_v so on this case we have enough evidence in order to reject the null hypothesis at the significance level provided. And that means that the population variance is significantly lower than 9

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

n=35 represent the sample size

\alpha=0.01 represent the confidence level  

s =2.12 represent the sample deviation obtained

\sigma_0 =3 represent the value that we want to test

Null and alternative hypothesis

On this case we want to check if the population variance specification is lower than 9 and the deviation lower than 3, so the system of hypothesis would be:

Null Hypothesis: \sigma^2 \geq 9

Alternative hypothesis: \sigma^2

Calculate the statistic  

For this test we can use the following statistic:

\chi^2 =\frac{n-1}{\sigma^2_0} s^2

And this statistic is distributed chi square with n-1 degrees of freedom. We have eveything to replace.

\chi^2 =\frac{35-1}{9} 2.12^2 =16.979

Calculate the p value

In order to calculate the p value we need to have in count the degrees of freedom , on this case df= n-1= 35-1=34. And since is a left tailed test the p value would be given by:

p_v =P(\chi^2

In order to find the p value we can use the following code in excel:

"=CHISQ.DIST(16.979,34,TRUE)"

Conclusion

If we compare the p value and the significance level provided we see that p_v so on this case we have enough evidence in order to reject the null hypothesis at the significance level provided. And that means that the population variance is significantly lower than 9

6 0
3 years ago
Other questions:
  • Amy can ride her bike 4 miles in 30 minutes. Sebastian can ride his bike 3 miles in 24 minutes. How long, in miles, does it take
    12·2 answers
  • What is the slope-intercept equation of the line below?<br>plz help​
    10·2 answers
  • Mr Rodríguez drove 136 miles to main city .then he drove another 146 miles to rock town. How many miles did mr Rodríguez drive ?
    10·2 answers
  • I will give brainliest for correct answer !
    5·2 answers
  • What is the area of a triangle of the height is 5 and the width is 3 PLEASE HELP I HAVE TO SUBMIT SOON
    8·1 answer
  • an exterminator charge $80 to visit a home and $35 to spray each room. Of the total bill was $394, how many rooms were sprayed?
    11·1 answer
  • Analyze the function below and consider the given statement.
    9·1 answer
  • Graph the image of F(-8, 10) after a rotation 180° counterclockwise around the origin.
    12·1 answer
  • What is the product of 6 and 7 square root 128 in simplest radical form
    9·1 answer
  • According to the data in the figure, find the value of x and y.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!