A university financial aid office polled a random sample of 728 undergraduate students and 821 graduate students. Each of the students was asked whether or not they were employed during the previous summer. 441 of the undergraduate students and 401 of the graduate students said that they had worked during the previous summer. Give a 80% confidence interval for the difference between the proportions of undergraduate and graduate students who were employed during the summer. Step 1 of 3: Find the point estimate that should be used in constructing the confidence interval. Round your answer to three decimal places.

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

14

step-by-step explanation:

14 x 3 = 42

1,8,15,22,29,36,43,50

step-by-step explanation:

9x