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
Aleonysh [2.5K]
3 years ago
10

A scientist measures the height of 30 pine trees. When he finds the mean of these data, which phase of inferential statistics wi

ll it represent?
Mathematics
2 answers:
Andreyy893 years ago
8 0
Its data analysis, apex
grigory [225]3 years ago
7 0

Answer:

Data analysis

Step-by-step explanation:

You might be interested in
A machine fills containers with 35 ounces of raisins. After the containers are filled, another machine weighs them. If the conta
EleoNora [17]

Answer:

a think only thing thats close to my data

Step-by-step explanation:

7 0
2 years ago
Assume that a computer was used to generate the given confidence interval for the population mean. Find the sample mean or margi
stealth61 [152]

Answer:

The sample mean is

b.3.55

The margin of error is

0.32

Step-by-step explanation:

Deep explanation about a confidence interval

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645*215 = 353.675

The lower end of the interval is the mean subtracted by M. So it is 6.4 - 0.3944 = 6.01 hours.

The upper end of the interval is the mean added to M. So it is 6.4 + 0.3944 = 6.74 hours.

In this problem:

The deep explanation is not that important.

We just have to recognize that the interval has a lower end and an upper end. The distance from both the upper and the lower end to the mean is M. This means that the sample mean is the halfway point between the lower end and the upper end.

The margin of error is the distance of these two points(lower and upper end) to the mean.

In our interval

Lower end: 3.23

Upper end: 3.87

Sample mean

M = \frac{3.23 + 3.87}{2} = 3.55

So the correct answer is:

b.3.55

The margin of error is

3.87 - 3.55 = 3.55 - 3.23 = 0.32

4 0
3 years ago
Which of the following is the simplest form of this expression?
Softa [21]

Step-by-step explanation:

which expression there is no expression here

4 0
3 years ago
Which shape has no parallel sides?<br> rectangle<br> trapezoid<br> square<br> triangle
nadezda [96]

Answer:

Triangle

Step-by-step explanation:

all of them have parallel sides except triangle

5 0
2 years ago
Read 2 more answers
20 points
g100num [7]

Answer:

the answer is 7/12 hours

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Find the exact values of cos 3 pi/4 radians sin 3 pi/4 radians.
    5·1 answer
  • Is 45 minus equivant to 750 seconds
    10·1 answer
  • The arch of the Gateshead Millennium Bridge forms a parabola with equation:
    15·1 answer
  • Which value of x makes the equation true?<br> X + 7 = -9<br> A.-16<br> B.-2<br> C. 2<br> D.16
    7·1 answer
  • Which of the following values for x and y make the equation 4x + 2y + 3 = 19 true?
    12·2 answers
  • How many days are there in 4 weeks,3 days?
    13·2 answers
  • What is 0.313 as a fraction and a percent
    6·2 answers
  • Stephanie bought a pair of earrings for $3.25 and a necklace for 5.25. The tax rate is %8. What is the total cost including tax?
    15·2 answers
  • What is the volume of the figure composed of two congruent triangular prisms if a = 4 units, b = 2 units, and c = 6 units?
    14·1 answer
  • Find the minimum value of
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!