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
NikAS [45]
3 years ago
6

Which of the following statements best explains the data collected by the student shown in the above table?

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
5 0

Answer:

i think its j

Step-by-step explanation:

You might be interested in
A simple random sample of size nequals10 is obtained from a population with muequals68 and sigmaequals15. ​(a) What must be true
valentina_108 [34]

Answer:

(a) The distribution of the sample mean (\bar x) is <em>N</em> (68, 4.74²).

(b) The value of P(\bar X is 0.7642.

(c) The value of P(\bar X\geq 69.1) is 0.3670.

Step-by-step explanation:

A random sample of size <em>n</em> = 10 is selected from a population.

Let the population be made up of the random variable <em>X</em>.

The mean and standard deviation of <em>X</em> are:

\mu=68\\\sigma=15

(a)

According to the Central Limit Theorem if we have a population with mean <em>μ</em> and standard deviation <em>σ</em> and we take appropriately huge random samples (<em>n</em> ≥ 30) from the population with replacement, then the distribution of the sample mean will be approximately normally distributed.

Since the sample selected is not large, i.e. <em>n</em> = 10 < 30, for the distribution of the sample mean will be approximately normally distributed, the population from which the sample is selected must be normally distributed.

Then, the mean of the distribution of the sample mean is given by,

\mu_{\bar x}=\mu=68

And the standard deviation of the distribution of the sample mean is given by,

\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{15}{\sqrt{10}}=4.74

Thus, the distribution of the sample mean (\bar x) is <em>N</em> (68, 4.74²).

(b)

Compute the value of P(\bar X as follows:

P(\bar X

                    =P(Z

*Use a <em>z</em>-table for the probability.

Thus, the value of P(\bar X is 0.7642.

(c)

Compute the value of P(\bar X\geq 69.1) as follows:

Apply continuity correction as follows:

P(\bar X\geq 69.1)=P(\bar X> 69.1+0.5)

                    =P(\bar X>69.6)

                    =P(\frac{\bar X-\mu_{\bar x}}{\sigma_{\bar x}}>\frac{69.6-68}{4.74})

                    =P(Z>0.34)\\=1-P(Z

Thus, the value of P(\bar X\geq 69.1) is 0.3670.

7 0
3 years ago
True or False: Point estimation is a form of statistical inference in which, based on the sample data, we estimate the unknown p
storchak [24]

Answer:

True

Step-by-step explanation:

Point estimation of a population parameter provides an estimate of  a single value calculated from the sample that is likely to be close to its value to the unknown parameter. Itis to be noted that a point estimate will not in general be equal to the population parameter as the random sample used is one of the many possible samples which could be chosen from the population.

For example, in estimation, we may estimate the mean and the variance of a population by computing the mean and the variance of the sample drawn from a population.

6 0
3 years ago
How do you write 50% as a fraction?
satela [25.4K]

Answer:

\frac{1}{2}

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Solve for the unknown values <br><br> X = ?<br> Y = ?
vovikov84 [41]

Step-by-step explanation:

So 95 is a linear pair. a linear pair adds up to 180 so 180 - 95 = 85

X = 85

y = 50

5 0
3 years ago
the area of a rectangular dog pen is 8 1/2 square feet. if the width is 3 2/5 feet, what is the length, in feet?
frez [133]
2.5 ft.

a rectangle's area is Length • Width

8.5 = 3.4 \times x
8.5 \div 3.4 = x
2.5 = x
6 0
3 years ago
Read 2 more answers
Other questions:
  • -1 is it a rational
    13·2 answers
  • Cindy is preparing for a 25-mile charity run hosted by her school's Athletic Club on their home track. In preparation for the ru
    9·2 answers
  • What is 350/100 as a decimal
    5·1 answer
  • Marcus' employee benefits include family health care coverage. He contributes 25% of the cost. Marcus gets paid weekly and $102
    8·1 answer
  • Which of the following is a solution of the inequality 0.75n + 1.5 &lt; 59.25
    10·1 answer
  • Are the ratios 5:3 and 20:12 equivalent
    10·2 answers
  • Use spherical coordinates. Evaluate e x2 y2 z2 dV, E where E is enclosed by the sphere x2 y2 z2
    12·1 answer
  • Select all the sets of three side lengths that will make a triangle.
    15·2 answers
  • Please help will choose brainliest!!!!!
    14·2 answers
  • This is a practice test but I don’t understand stand this one pls help fast
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!