StatCrunch in chapters 8 and 9

Question 1

Confidence interval for proportion

Answer 1

Use proportion stats

Question 2

Confidence interval for mean

Answer 2

Use T stats

Question 3

Critical value for mean

Answer 3

Use T calculator

Question 4

Critical value for proportion

Answer 4

Use normal calculator

Question 5

If you know the population standard deviation, u do not need the

Answer 5

T calculator use the normal calculator