MA30104: Activity Ch5P2

• probability

• z-score

• both

Which level is NOT commonly used to construct the confidence interval?

• 90%

• 91%

• 95%

• 99%

How many parameters are we going to learn in slide Chapter 5 Part 2?

• 1

• 2

• 3

• 4

What does CLT stand for?

• Centre Limit Theorem

• Control Limit Theorem

• Central Limit Theorem

• Convergence Limit Theorem

Which term can replace "random sample"?

• dependent and normally distributed random variables

• dependent and identically distributed random variables

• independent and normally distributed random variables

• independent and identically distributed random variables

Why can the "normal population" assumption be replaced by "n≥30"?

• When n is sufficiently large, ∑X_i will be normally distributed.

• When n is sufficiently large, X_i will be normally distributed.

• When n is sufficiently large, μ will be normally distributed.

From z-table, what is the value of z_0.05?

• -1.96

• -1.645

• 1.645

• 1.96

Based on the video clip, what is the 95% confidence interval for μ on page 11?

• (3.727,8.233)

• (4.265,7.695)

• (4.541,7.419)

Which interval can we use to estimate the value of the population mean in this example?

• z-interval for μ

• t-interval for μ

• z-interval for p

• t-interval for p

Which interval can we use to find the confidence interval for μ when the population variance is unknown?

• both