professional education test sample questions

The percentage of Americans of 25 years and above having at least some college education is 50.9. What is the probability that in a random sample of 400 Americans in this age group, only less than 220 will have at least some college education? => 44.41% or 5.95% or 9.5..

Educational survey reports that the state average for the number of students per faculty member in schools is 12.3. From a random sample of 20 schools of the state, the mean was found as 12.5 and the standard deviation as 0.6. At α = 0.10, test the education..

Educational survey reports that the standard deviation in heights of all the girls of grade 10 was 6 cm. The heights (in cm) of a sample of 15 girls selected from different schools is shown. Find the chi-square test value and test the educational su..

A coin is tossed. Write the sample space. => {T} or {H, T} or { } or {H}..

Three coins are tossed. Write the number of elements in the sample space. => 4 or 6 or 2 or 8..

What formula is used to gain information about a sample mean when the variable is normally distributed or when the sample size is 30 or more? => z = X - μ σ or z = X ‾ - μ σ n or z = X ‾ - μ σ n or z = X - μ σ..

Use the data in the table to find the ratio of the expenditure for elementary and secondary school education to that of the expenditure for higher education in the year 2000. => 4 : 5 or 1 : 4 or 3 : 2 or 1 : 8..

Which of the following is a property of sampling distribution? I. Mean of sampling distribution equals population mean. II. Sample mean comes closer to population mean than any other unbiased mean. III. As sample size increases, variation of sample ..

Select the incorrect statement(s). I. A sampling distribution of sample means is a distribution obtained by using the means computed from random samples of a specific size taken from a population. II. Sampling error is the difference between the sample..

Select the correct statements. I. Samples are used when the population is too small. II. Samples are used when the population is too large. III. Samples are used when the time available for a study is limited. IV. Samples are used only to reduce cost. => II a..