Exercise

# Exercise 16 - Calculate the P-value

The confidence interval tells us there is relatively strong pollster effect resulting in a difference of about 5%. Random variability does not seem to explain it.

Compute a p-value to relay the fact that chance does not explain the observed pollster effect.

Instructions

**100 XP**

- Use the
`pnorm`

function to calculate the probability that a random value is larger than the observed ratio of the estimate to the standard error. - Multiply the probability by 2, because this is the two-tailed test.