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Rudiy27
3 years ago
15

Which of the following statements is not true? a) The standard deviation of the sampling distribution of sample mean = σ/√n b) T

he larger the sample size, the better will be the normal approximation to the sampling distribution of sample mean. c) The sampling distribution of the sample mean is always reasonably like the distribution of X, the distribution from which the sample is taken. d) The sampling distribution of sample mean is approximately normal, mound-shaped, and symmetric for n > 30 or n = 30. e) The mean of the sampling distribution of sample mean is always the same as that of X, the distribution from which the sample is taken. f) None of the above
Mathematics
1 answer:
I am Lyosha [343]3 years ago
6 0

Answer:

e) The mean of the sampling distribution of sample mean is always the same as that of X, the distribution from which the sample is taken.

Step-by-step explanation:

The central limit theorem states that

"Given a population with a finite mean μ and a finite non-zero variance σ2, the sampling distribution of the mean approaches a normal distribution with a mean of μ and a variance of σ2/N as N, the sample size, increases."

This means that as the sample size increases, the sample mean of the sampling distribution of means approaches the population mean.  This does not state that the sample mean will always be the same as the population mean.

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Answer:

To complete the square the equation would be 2(x+4)^2-29

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2 years ago
A ramp for a loading truck is 13 long and covers 12 feet along the level ground. How many feet high is the highest point on the
goblinko [34]

Answer:

5 feet

Step-by-step explanation:

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8 0
2 years ago
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Two cars leave a town at the same time heading in opposite directions. One car is traveling 12 mph faster than the other. After
Katena32 [7]
<span>Find the speed of each car.
Let a be the first car
Let b be the second car
=> a = x miles per hour
=> b = x + 12 miles per hour
=> 2 (x+ x + 12) = 232 miles per hour
=> 2x + 12 = 232
=> 2x + 12 = 116
=> 2x = 116 - 12
=> 2x / 2 = 104 / 2
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4 0
3 years ago
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Maurinko [17]
Answer: Negative
If the same negative number is multiplied to each side of a true inequality, then the inequality sign flips to make the new inequality true as well

Example:
Take 1 < 5 and multiply both sides by -2 and we get -2 > -10. The "less than" sign flips to "greater than" since -2 < -10 is false. The value of -10 is further to the left of -2 so -10 is smaller in value. The negative basically takes the complete opposite which is why the flip must happen.

This sign flip rule does not happen if you multiply both sides by a positive number.
5 0
3 years ago
A cyclist travels 4 miles in 10 minutes and then a further 8 miles in 30 minutes without stopping. Calculate the cyclist's avera
andreev551 [17]

Answer:

0.3 mph

Step-by-step explanation:

Yee

5 0
2 years ago
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