Mathematics, 11.02.2022 05:30, purplefive85

A polling company is trying to estimate the percentage of adults that consider themselves happy. A confidence interval based on a sample size of 360 has a larger than desired margin of error. The company wants to conduct another poll and obtain another confidence interval of the same level but reduce the error to one-third the size of the original sample. Required:
How many adults should they now interview?

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 12:50, perezesmeralda78

What is the value of y in the solution to the system of equations? x + y = 12x – 3y = –30a. –8b. –3c. 3d. 8

Answers: 1

continue

Mathematics, 21.06.2019 14:30, esilvar4378

Select true or false to tell whether the following conditional p q is true or false. use the truth table if needed. if a week has seven days, then a year has twenty months.

Answers: 1

continue

Mathematics, 21.06.2019 17:10, Andrewecolt1993

Which is a graph of a proportional relationship?

Answers: 1

continue

Mathematics, 21.06.2019 17:30, meganenaranjo

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Answers: 1

continue

Do you know the correct answer?

A polling company is trying to estimate the percentage of adults that consider themselves happy. A c...