NASA is conducting an experiment to find out the fraction of people who black out at G forces greater than 6. In an earlier study, the population proportion was estimated to be 0.4. How large a sample would be required in order to estimate the fraction of people who black out at 6 or more Gs at the 98% confidence level with an error of at most 0.04

The sample size is = 814(approximately)

Step-by-step explanation:

Given -

Population proportion = 0.4

Confidence interval = 98

1 -  Confidence interval = 1 - .98

=  .02

 = .001

= .04

Let sample size = n

.04 =

For 98 level of confidence, z = 2.33

.04 =

(Squaring both side)

=

n =

n = 814.33

Approximately n =814

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled