# Approaches to solving questions

What does it mean if

Covariance matrix .... they are independent (=0) or dependent (≠0).

Q-Q plot

your confidence for all intervals simultaneously is 95%.

**Find the sample mean vector and the covariance matrix.**

**Find 95% confidence intervals for the population means**

**One at a time multiplier**

**Bonferroni multiplier**

**Simultaneous confidence region multiplier**

Specify the conditional distribution of X1, given that X3 = x3.

Specify the conditional distribution of X1, given that X2 = x2 and X3 = x3.

Correlation and partial condition given....

Mean

Covariance matrix

## Approximate distributions

What is

## Multivariate normality

Assess mutlviariate normality