Analysis showed that the mean arrival rate for vehicles at a certain Shell station on Friday afternoon last year was 4.5 vehicles per minute. How large a sample would be needed to estimate this year's mean arrival rate with 98 percent confidence and an error of ± 0.5? (Round the standard deviation answer to 4 decimal places. Enter your answer as a whole number (no decimals). Use a z-value taken to four decimal places in your calculations.) Sample size

The sample size needed is n=25.

Step-by-step explanation:

We will use a Poisson process to model the arrival.

We know the mean rate of arrivals, that is

The standard deviation is calculated as:

The z-value for a 98% CI is z=2.3262.

If the 98% CI has to be within a error of 0.5, we have:

The sample size needed is n=25.

are you an artist's daughter? cuz dang you a fine piece of art, girl.

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true