A ballet company has 30 dancers. They want to randomly sample 8 dancers to complete a survey. Select the three ways the company could create a valid random sample.

A. Take a spinner with 30 equal-sized sections and assign each dancer to a section. Spin the spinner 8 times to determine which dancers to survey.

B. At the next rehearsal, select the first 8 dancers to arrive at rehearsal to complete the survey.

C. Create a list of dancers numbered 1 through 30. Use a random number generator to select 8 random numbers from 1 to 30 that represent the dancers to survey.

D. Write the names of all dancers on equal-sized pieces of paper. Mix them up and draw 8 without looking to determine which dancers to survey.

Read the excerpt from the strange case of dr jekyll and mr. hyde what do dr. jekyll's thoughts reveal about him in this excerpt? [t]he inmates of my house were locked in the most rigorous hours of slumber, and i determined, flushed as i was with hope and triumph, to venture in my new shape as far as to my bedroom. i crossed the yard, wherein the constellations looked down upon me, i could have thought, with wonder, the first creature of that sort that their unsleeping vigilance had yet disclosed to he is jealous of those who can sleep through the night. he is revered for his scientific advances. he is interested in studying the movements of the stars he is proud and enthusiastic about his initial results.