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Phantasy [73]
3 years ago
8

Which of the following statements about the sampling distribution of the sample mean, x-bar, is not true? A. The sampling distri

bution is normal regardless of the shape of the population distribution, as long as the sample size, n, is large enough. B. The sampling distribution is normal regardless of the sample size, as long as the population distribution is normal. C. The sampling distribution's mean is the same as the population mean. D. The sampling distribution's standard deviation is smaller than the population standard deviation. E. All of the above statements are tru
Mathematics
1 answer:
Elenna [48]3 years ago
7 0

Answer: E. All of the above statements are true

Step-by-step explanation:

The mean of sampling distribution of the mean is simply the population mean from which scores were being sampled. This implies that when population has a mean μ, it follows that mean of sampling distribution of mean will also be μ.

It should also be noted that the distribution's shape is symmetric and normal and there are no outliers from its overall pattern.

The statements about the sampling distribution of the sample mean, x-bar that are true include:

• The sampling distribution is normal regardless of the shape of the population distribution, as long as the sample size, n, is large enough.

• The sampling distribution is normal regardless of the sample size, as long as the population distribution is normal. • The sampling distribution's mean is the same as the population mean.

• The sampling distribution's standard deviation is smaller than the population standard deviation.

Therefore, option E is the correct answer as all the options are true.

You might be interested in
5-7
uranmaximum [27]

Answer:

the third option

Step-by-step explanation:

what does that mean ?

to "rationalize" it is to transform it into a rational number (that is a number that can be described as a/b, and is not an endless sequence of digits after the decimal point without a repeating pattern).

a square root of a not square number is irrational (not rational).

so, what this question is asking us to get rid of the square root part in the denominator (the bottom part).

for this we need to multiply to and bottom with the same expression (to keep the whole value of the quotient the same) that, when multiplied at the bottom, eliminates the square root.

what can I multiply a square root with to eliminate the square root ? the square root again - we are squaring the square root.

so, what works for 9 - sqrt(14) as factor ?

we cannot just square this as

(9- sqrt(14))² = 81 -2sqrt(14) + 14

we still have the square root included.

but remember the little trick :

(a+b)(a-b) = a² - b²

without any mixed elements.

so, we need to multiply (9-sqrt(14)) by (9+sqrt(14)) to get

81-14 = 67 which is a rational number.

therefore, the third answer option is correct.

7 0
3 years ago
Which linear function represents the table? A) y = 2x − 5 B) y = 2x + 5 C) y = −2x + 5 D) y = −2x − 5
lubasha [3.4K]

Answer:

y= -2x - 1

Step-by-step explanation:

that is the answer sorry if wrong

5 0
3 years ago
Plz answer as many as you can...
Lostsunrise [7]
4/11,9/13,6/25,0.48,0.624
5 0
3 years ago
Tammy is on her way home in her car. She has driven 18 miles so far, which is two-thirds of the way home. What is the total leng
Kamila [148]

Answer:

27

Step-by-step explanation:

1/3 is 9 miles or if you don't know multiply 18 by 3/2 and it will result in a whole which gets you your destination miles.

18 times 3/2

27 miles

3 0
3 years ago
Solve for
garri49 [273]

Answer:

I do not understand the question

5 0
3 years ago
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