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
kari74 [83]
3 years ago
15

By rounding each number to 2 significant figures find and approximate answer to 5998 divide 199

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
6 0

Answer:

I got 30.14

Step-by-step explanation:

You might be interested in
The base of a pyramid has n sides write an expression for the number of faces of the pyramid
kumpel [21]
A pyramid always have a number of slant triangles equal to the number of the sides of the base.

This means that a pyramid always have the number of face which is one more than the number of sides of the base.

Therefore, given that a pyramid has n number of sides of the base, the expression for the number of faces of the pyramid is given by

number of faces = n + 1.
6 0
3 years ago
An experiment to investigate the survival time in hours of an electronic component consists of placing the parts in a test cell
mixer [17]

Answer:

a) The sample mean is of 49 and the sample standard deviation is of 11.7.

b) The range of the true mean at 90% confidence level is of 9.62 hours.

c) The prediction interval, at a 90% confidence level, of it's failure time is between 39.38 hours and 58.62 hours.

Step-by-step explanation:

Question a:

Sample mean:

\overline{x} = \frac{34+40+46+49+61+64}{6} = 49

Sample standard deviation:

s = sqrt{\frac{(34-49)^2+(40-49)^2+(46-49)^2+(49-49)^2+(61-49)^2+(64-49)^2}{5}} = 11.7

The sample mean is of 49 and the sample standard deviation is of 11.7.

b)Determine the range of the true mean at 90% confidence level.

We have to find the margin of error of the confidence interval. Since we have the standard deviation for the sample, the t-distribution is used.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 6 - 1 = 5

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 5 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 2.0.150

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample. So

M = 2.0150\frac{11.7}{\sqrt{6}} = 9.62

The range of the true mean at 90% confidence level is of 9.62 hours.

(c)If a seventh sample is tested, what is the prediction interval (90% confidence level) of its failure time.

This is the confidence interval, so:

The lower end of the interval is the sample mean subtracted by M. So it is 49 - 9.62 = 39.38 hours.

The upper end of the interval is the sample mean added to M. So it is 49 + 9.62 = 58.62 hours.

The prediction interval, at a 90% confidence level, of it's failure time is between 39.38 hours and 58.62 hours.

4 0
2 years ago
Help explain an show work thank you so much!
Dominik [7]

5 is (D)...…………………okay

7 0
3 years ago
Which of the pairs (2, 3), (1, 2.5), (6, 1), or (−2, 2) is the solution to the equation 4y−x= 10?
horrorfan [7]

Answer:

(2,3)

Step-by-step explanation:

4(3)-(2)=10

12-2=10

The answer is (2,3)

6 0
2 years ago
16 - x = 2 ( 3 x + 1 )
suter [353]

Answer:

x = 2

Step-by-step explanation:

16 - x = 2(3x + 1)

16 - x = 6x + 2

-x - 6x = 2 - 16

-7x = -14

x = -14/-7

x = 2

hope this helps

4 0
2 years ago
Read 2 more answers
Other questions:
  • A survey revealed that 56% of the students at North Valley high school are involved with in a sports team. The survey also showe
    14·1 answer
  • 125 invitations to 75 Invitations ( Round To The Nearest Tenth Of A Percent If Necessary )
    12·1 answer
  • Working on an AP Calc redo! I know the correct answer but don't know how to get there. Definite Integrals!
    13·1 answer
  • Please what are plane shapes
    9·2 answers
  • A cylindrical grain silo is being built for Mr. Greenjeans. The silo is 13 meters tall with a diameter of 6 meters. If the entir
    9·1 answer
  • Find area of the circle
    8·2 answers
  • (4,8), m=5 need a step by step answer please
    6·1 answer
  • If two lines are perpendicular , what do we know about their slopes ?
    15·1 answer
  • Help on theese 2 for brainly tell me why we need to regroup
    12·1 answer
  • Redo !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! the problem is in the imaage
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!