answer.
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
LuckyWell [14K]
2 years ago
14

The sampling distribution of certain statistical measures shows a normal distribution which of the following is an unbiased esti

mator that has a graph that is normally distributed and is not skewed
a. proportion
b. median
c. range
d. variance
Mathematics
2 answers:
PilotLPTM [1.2K]2 years ago
7 0

GACA

Answer: 1. B) Normal distribution

2. D) Variance, mean, proportion

3. D) normal distribution

4. D) normal distribution

5. A) proportion

6. A) median

7. C) this is just one sample. The sampling distribution of the mean requires repeating this process with the same sample several times

8. A) not a normal distribution

9. B) mean, variance, proportion

10. A) the sampling distribution of the variance requires repeating this process with the same sample several times. So this does not compare to the sampling distribution of the variance

Step-by-step explanation: 100% :)

svlad2 [7]2 years ago
4 0

Answer:

A) Proportion.

Step-by-step explanation:

The distribution of sample proportions leads or may tends to approximate a normal distribution and is an unbiased estimator that has a graph that is usually distributed and is not skewed. In other words, simply, we can also say that the population proportion is basically defined to be as the mean of the sample proportion. The population proportion is basically equaled the expected value of the sample proportion.

You might be interested in
For two days in a row Alvin jogged in the park he jogged for 46 min on Friday this is 19 min less than he ran on Saturday write
Luda [366]
Saturday = 46+19 min = 65 minutes
8 0
2 years ago
A region R in the xy-plane is given. Find equations for a transformation T that maps a rectangular region S in the uv-plane onto
ruslelena [56]
X(u, v) = (2(v - c) / (d - c) + 1)cos(pi * (u - a) / (2b - 2a))
y(u, v) = (2(v - c) / (d - c) + 1)sin(pi * (u - a) / (2b - 2a))

As v ranges from c to d, 2(v - c) / (d - c) + 1 will range from 1 to 3, which is the perfect range for the radius. As u ranges from a to b, pi * (u - a) / (2b - 2a) will range from 0 to pi/2, which is the perfect range for the angle. So, this maps the rectangle to R.
6 0
2 years ago
When p2 – 4p is subtracted from p2 + p – 6, the result is . To get p – 9, subtract from this result.
DochEvi [55]

Answer:

When p2 – 4p is subtracted from p2 + p – 6, the result is:

p2+p-6-(p2-4p)=p2+p-6-p2+4p=5p-6

To get p – 9, subtract from this result x:

5p-6-x=p-9

Solving for x:

5p-6-x+x-p+9=p-9+x-p+9

4p+3=x

x=4p+3

Answer:

1) When p2 – 4p is subtracted from p2 + p – 6, the result is 5p-6

2) To get p – 9, subtract from this result 4p+3

Step-by-step explanation:

7 0
2 years ago
Of 1,050 randomly selected adults, 360 identified themselves as manual laborers, 280 identified themselves as non-manual wage ea
garik1379 [7]

Answer:

We can claim with 95% confidence that the proportion of executives that prefer trucks is between 19.2% and 32.8%.

Step-by-step explanation:

We have a sample of executives, of size n=160, and the proportion that prefer trucks is 26%.

We have to calculate a 95% confidence interval for the proportion.

The sample proportion is p=0.26.

 

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.26*0.74}{160}}\\\\\\ \sigma_p=\sqrt{0.0012}=0.0347

The critical z-value for a 95% confidence interval is z=1.96.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_p=1.96 \cdot 0.0347=0.068

Then, the lower and upper bounds of the confidence interval are:

LL=p-z \cdot \sigma_p = 0.26-0.068=0.192\\\\UL=p+z \cdot \sigma_p = 0.26+0.068=0.328

The 95% confidence interval for the population proportion is (0.192, 0.328).

We can claim with 95% confidence that the proportion of executives that prefer trucks is between 19.2% and 32.8%.

3 0
2 years ago
Two race cars,car x an y,are at the starting point of a two km track at the same time.car x and car y make one lap every 60 s an
tino4ka555 [31]

Answer is attached.

Please check the image.

4 0
2 years ago
Other questions:
  • Adam put $100 in a savings account. After 10 years, he had $1649 in the account. What rate of interest did he earn? Use the form
    5·2 answers
  • A rectangular football field is 64 meters wide and 100 meters long. A player runs from one corner of the field in a diagonal lin
    13·1 answer
  • {(–9, 1), (–5, 2), (0, 7), (1, 3), (6, –10)} Josiah claims that the ordered pair (6, –10) can be replaced with any ordered pair
    14·1 answer
  • MO, MN, and ON are the midsegments of △JKL. What is the perimeter of △JKL? 6 9.5 11.5 19
    10·2 answers
  • 67,124 x three fourths = ________. Will the product of this equation be less than or greater than 67,124? Explain your reasoning
    9·2 answers
  • The value of a rare painting has increased each year since it was found at a garage sale. The value of the painting is modeled b
    5·1 answer
  • I round to 900 I have twice as many hundreds as ones and all my digits are different but their sums are 18 can someone answer th
    6·1 answer
  • Ryan is building a ramp so he can easily move things in and out of an overhead storage area in his garage. The storage area is 8
    12·2 answers
  • How many quarter-acre lots can be made from 6 1/2 acres of land?
    11·2 answers
  • The best drink at the Smoothie Shack is the Berry Blaster. It takes 3 cups of strawberries to make 2 Berry Blasters. The Smoothi
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!