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
Thepotemich [5.8K]
3 years ago
13

The following data represent the muzzle velocity​ (in feet per​second) of rounds fired from a​ 155-mm gun. For each​ round, two

measurements of the velocity were recorded using two different measuring​ devices, resulting in the following data. Complete parts​ (a) through​ (d) below.
Observation

1

2

3

4

5

6

A

790.2790.2

791.3791.3

791.4791.4

793.7793.7

793.4793.4

793.3793.3

B

800.1800.1

789.7789.7

799.8799.8

792.6792.6

802.1802.1

788.5788.5

​(a) Why are these​ matched-pairs data?

A.Two measurements​ (A and​ B) are taken on the same round.

B.All the measurements came from rounds fired from the same gun.

C.The same round was fired in every trial.

D.The measurements​ (A and​ B) are taken by the same instrument.

​(b) Is there a difference in the measurement of the muzzle velocity between device A and device B at the

alpha equals 0.01α=0.01

level of​ significance? ​Note: A normal probability plot and boxplot of the data indicate that the differences are approximately normally distributed with no outliers.Let

di=Ai−Bi.

Identify the null and alternative hypotheses.

Upper H 0H0​:

Upper H 1H1​:

Determine the test statistic for this hypothesis test.

t0=

​(Round to two decimal places as​ needed.)

Find the​ P-value.

​P-valuee=

​(Round to three decimal places as​ needed.)What is your conclusion regarding

Upper H 0=

α=0.01

level of significance to conclude that there is a difference in the measurements of velocity between device A and device B.

​(c) Construct a​ 99% confidence interval about the population mean difference. Compute the difference as device A minus device B. Interpret your results.

The confidence interval is left parenthesis nothing comma nothing right parenthesis .,.

​(Round to two decimal places as​ needed.)

Interpret the confidence interval. Choose the correct answer below.

A.One can be​ 1% confident that the mean difference in measurement lies in the interval found above.

B.One can be​ 99% confident that the mean difference in measurement is 0.01

C.One can be​ 99% confident that the mean difference in measurement lies in the interval found above.

D.One can be​ 99% confident that the mean difference in measurement is 0.

​

Does this visual evidence support the results obtained in part​(b)?

A.​Yes, because 0 is contained in the boxplot.

B.No, because the boxplot is too large.

C.No, because 0 is not containednot containedin the boxplot.

D.Yes, because the boxplot shows no outliers.
Mathematics
2 answers:
blondinia [14]3 years ago
6 0

Answer:

what are you suppose to be figuring out?

Step-by-step explanation:

Alla [95]3 years ago
5 0
I believe the first one is answer B I do not know the rest
You might be interested in
What is the solution of this proportion 4/9 = 6/d
Alchen [17]

Answer:

d = 2/27

Remember that when a variable is times with a number you <u>divide</u> the number on both sides.

When a variable is divided by a number, you <u>multiply</u> the number on both sides.

Hope this helps you and thank you !!

4 0
3 years ago
4 divided by 84<br><br> (2 digit dividends, remainders)
belka [17]

Answer:

0.0476

Step-by-step explanation:

4/84=0.0476

7 0
2 years ago
Swimming 1/4 of a mile uses about the same number of calories as running 1 mile. Glida ran a 26 mile marathon. about how far wou
natulia [17]

Answer:

6.5 miles

Step-by-step explanation:

26/4=6.5 miles

1/4 of a mile per every mile so just divide each mile by 4

7 0
3 years ago
HURRY PLS!!!!!!!!
Feliz [49]

Answer:

The answer is D on edgen.

Step-by-step explanation:

D. 80

(all you do is add 40, 14 and 26 from the graph)

7 0
3 years ago
Read 2 more answers
Find the area of the circle to the nearest whole number, if necessary.
creativ13 [48]

Answer:

Area of a Circle = πr²

R=Diameter/2

=21mm

=π(21)²

=1385.44mm²

To the nearest whole number

= 1385mm²

The answer is in mm². It may differ if the given answer is in m². You can get this by converting your radius to meters. This is done by dividing 21mm by 1000.

Bye!!!

8 0
2 years ago
Other questions:
  • An element with mass 970 grams decays by 27.7% per minute. How much of the element is remaining after 13 minutes, to the nearest
    15·2 answers
  • Just a little help please
    13·2 answers
  • Help picture 2 question math
    14·1 answer
  • Tyrone works at a diner as a cashier and a host he earns 7.95$ per hour no matter which job he dose Tyrone wants to buy a new gu
    5·2 answers
  • A car is driving at a rate of 61 miles per hour.
    8·2 answers
  • What does this equal​
    8·1 answer
  • The Thompson family and the Evans family each used their sprinklers last summer. The water output rate for the Thompson family's
    6·2 answers
  • How do you do this question?
    9·1 answer
  • Please help, will give brainliest! :)
    6·1 answer
  • Find the 16th term in the geometric series where the first term is 6 and the<br> common ratio is 2.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!