Question

Question 2 3 pts The standard error is the same things as the standard deviation True Question 19 3 pts False Small Sample Mean Problem. Each year the Heritage Foundation creates an Index of Economic Freedom for countries around the word based on assessments of freedom on property rights.corruption business freedom, and labor freedom, among many others. We have a sample of 31 countries taken from the 2016 data. The following is a summary of this sample. Question 32 3 pts Proportion Problem. Each year Delta Dental does a survey of parents concerning the tradition of the Tooth Fairy. A random sample of 1,058 parents were asked about how much money they leave for a tooth and questions concerning how their child responded to the concept of the Tooth Fairy. In one question, 508 parents indicated that their child saved the money they got for their tooth. S109 18 22 24 32 42 550 65 74 75 76 77 9193 0 02 12 19 22 30 31 Std Deviaton 126 1941 12.975 Avalo n index of 464 You are asked to Test to see if this proportion is different from.5. Use an alpha level of .05. Based on your test result, you would conclude the proportion was different from.5. This is a true/false question. The Heritage Foundation feels an index below 60 reflects a country that is mostly unfree. If we were to conduct a test to see if the sample estimate is above 60 at an alpha level-.05, this would be a One- tailed test. True O True False False

Answer 1

Question:2

The standard error is the same things as the standard deviation

The standard deviation of the mean (SD) is the most commonly used measure of the spread of values in a distribution. SD is calculated as the square root of the variance (the average squared deviation from the mean)

Variance in a population is:

[x is a value from the population, μ is the mean of all x, n is the number of x in the population, Σ is the summation]

Variance is usually estimated from a sample drawn from a population. The unbiased estimate of population variance calculated from a sample is:

[x_i is the ith observation from a sample of the population, x-bar is the sample mean, n (sample size) -1 is degrees of freedom, Σ is the summation]

The standard error of the mean is the expected value of the standard deviation of means of several samples, this is estimated from a single sample as:

[s is standard deviation of the sample mean, n is the sample size]

So the answer : 2nd option is correct i.e., False

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