Mathematics, 07.06.2020 00:04 xojade

A researcher is interested in determining the average number of years new teachers remain in the classroom. If past information shows a standard deviation of 5 years, what size sample should be taken so that at 95% confidence the margin of error will be 6 months or less?

Answers

385

Given: error: 6 months, standard deviation = 5 years is 60 months

Step 1: find the minimal sample size ‘n’ for 95% confidence interval

1-0.95= 0.05

0.05/2= 0.025

Step 2:
1-0.025= 0.975

View attachment for more steps

A researcher is interested in determining the average number of years new teachers remain in the cla

A researcher is interested in determining the average number of years new teachers remain in the cla

Answer from: Quest

17 x 256=4352

sorry if this is wrong, i'm new.

step-by-step explanation:

Answer from: Quest

853.3

step-by-step explanation:

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 14:00, coopera1744

Can someone check my answer? you

Answers: 1

continue

Mathematics, 21.06.2019 17:00, vandarughb2875

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

Answers: 1

continue

Mathematics, 21.06.2019 18:00, amshearer4719

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Answers: 1

continue

Mathematics, 21.06.2019 20:00, lorip7799ov3qr0

The total number of dental clinics total for the last 12 months was recorded

Answers: 3

continue

You know the right answer?

A researcher is interested in determining the average number of years new teachers remain in the cla...