In a statistics class, each student surveys a random sample of 20 students to estimate the number of units the students at their college are enrolled in. The college population is 10,000 students. Using their data, each student constructs a 95% confidence interval for μ, the average number of units the 10,000 students at their college are enrolled in. There are 40 students in the statistics class, so there are 40 different 95% confidence intervals that estimate μ. Which conclusion is correct? A. About 95% of the 40 confidence intervals will contain μ, the average number of units the 10,000 students at their college are enrolled in. B. About 5% of the sample means will not be included in the confidence intervals. C. Each student’s 95% confidence interval will contain about 95% of the population. D. About 5% of the raw data in the samples will not be found in these confidence intervals.

its 69.420

step-by-step explanation:

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

a. is correct

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.