Question

Question 1 (1 point) A population is slightly skewed to the right, has a mean of...

Question 1 (1 point)

A population is slightly skewed to the right, has a mean of 75 and a standard deviation of 7. If a random sample of 28 items are selected from this population, then the mean score of these 28 items is from a sampling distribution that has a mean of ...

Your Answer:

Question 1 options:

Answer

Question 2 (1 point)

A population is slightly skewed to the left, has a mean of 71 and a standard deviation of 7. If a random sample of 26 items are selected from this population, then the mean score of these 26 items is from a sampling distribution that has a standard deviation of ...

Round your answer to two decimal places. (For example 4.58)

Your Answer:

Question 2 options:

Answer

Question 3 (1 point)

A random sample of 40 individuals is selected from a population that is mound shaped but sightly skewed to the left, has a mean of 67.5 and a standard deviation of 8.9. The mean of these 40 observations belongs to a sampling distribution that has a shape that is best described as

Question 3 options:

skewed right

normal

skewed left

uniform
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
It is known that the population mean length of a song on a particular radio station...
It is known that the population mean length of a song on a particular radio station is 3.1 minutes, the population standard deviation of the lengths of the songs is 7.48 minutes and the distribution is slightly skewed to the right.   A random sample of 28 of the songs played at this particular radio station are selected and the mean length of these songs is determined. According to the Central Limit Theorem, the sample mean of the 28 songs belongs...
Lifetimes of a certain brand of lightbulbs is known to follow a right-skewed distribution with mean...
Lifetimes of a certain brand of lightbulbs is known to follow a right-skewed distribution with mean 24 months and standard deviation 2 months. Let X̄ represent the sampling distribution of the sample mean corresponding to a sample of size 1500 from this distribution. We expect this sampling distribution to be... Select one: a. Approximately Normal with a mean of 24 months and a standard deviation of 0.0013 months. b. Right-skewed with a mean of approx. 24 months and a standard...
In a very large population, the distribution of annual income is skewed, with a long right...
In a very large population, the distribution of annual income is skewed, with a long right tail. We take a Simple Random Sample of n people from this population and record the mean annual income of the people in the sample. Use this information to answer questions a, b, and c.(a) If n = 6, we would expect the distribution of sample means to be A. skewed to the left. B. an approximately Uniform distribution. C. skewed to the right....
Question 1 (1 point) Suppose that a sample of size 60 is drawn from a population...
Question 1 (1 point) Suppose that a sample of size 60 is drawn from a population with mean 88 and standard deviation 61 . Find the value of , the mean of the distribution of sample means. Wrtie only a number as your answer. Your Answer: Question 2 (1 point) Suppose that a sample of size 68 is drawn from a population with mean 64 and standard deviation 46 . Find the value of , the standard deviation of the...
Question 11 options: that scores above the mean are distributed the same as scores below the...
Question 11 options: that scores above the mean are distributed the same as scores below the mean that extreme scores are possible in a normal distribution that there are an infinite number of possible normal distributions that this characteristic has no practical implication Question 12 (1 point) In a normal distribution with 3±1 (M±SD), a researcher can appropriately conclude that about 84.13% of scores were greater than 2. Question 12 options: True False Question 13 (1 point) The mean, median,...
Assume for a moment that we have a population distribution that is negatively skewed. Which probability...
Assume for a moment that we have a population distribution that is negatively skewed. Which probability distribution becomes normal as the size of the sample increases? population distribution sample distribution sampling distribution None of the above The standard error of the mean refers to the standard deviation of the... normal distribution population sample sampling distribution None of the above Which type of error can be quantitatively measured: sampling error non-sampling error both neither The purpose of statistical inference is to...
Random samples of size n were selected from a normal population with the means and variances...
Random samples of size n were selected from a normal population with the means and variances given here. n = 25, μ = 12, σ2 = 9 Describe the shape of the sampling distribution of the sample mean. a. The distribution is normal b. The distribution is skewed left c. The distribution is bimodal d. The distribution is uniform e. The distribution is skewed right Find the mean and the standard error of the sampling distribution of the sample mean....
According to a recent poll cholesterol levels in healthy adults are right skewed with a mean...
According to a recent poll cholesterol levels in healthy adults are right skewed with a mean of 209 mg/dL and a standard deviation of 35 mg/dL. A random sample of 42 healthy adults is selected. Describe the sampling distribution of the sample mean cholesterol level for the sample of 42 adults. a. X̄ ~ AN(209, 35) b. X̄ ~ N(209, 5.4006) c. X̄ ~ N(209, 35) d. X̄ ~ AN(209, 5.4006)
According to a recent poll cholesterol levels in healthy adults are right skewed with a mean...
According to a recent poll cholesterol levels in healthy adults are right skewed with a mean of 209 mg/dL and a standard deviation of 35 mg/dL. A random sample of 42 healthy adults is selected. Describe the sampling distribution of the sample mean cholesterol level for the sample of 42 adults. a. X̄ ~ N(209, 5.4006) b. X̄ ~ N(209, 35) c. X̄ ~ AN(209, 5.4006) d. X̄ ~ AN(209, 35)
For a population that is left skewed with a mean of 24and a standard deviation equal...
For a population that is left skewed with a mean of 24and a standard deviation equal to 18​,determine the probability of observing a sample mean of 23or more from a sample of size 36.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT