Question

Problem I) DDT concentrations were measured in gulls. The data have a mean of 10.1 ppm and a standard deviation of 2.0 ppm. Test the hypothesis that DDT concentrations follow a normal distribution. Use a % level of significance. Z1 DDT (ppm Number of gull:s 10 36 75 72 50 7 6.0 6.0-8.0 8.0-10.0 10.0-12.0 12.0-14.0 14.0 2.05 1.05 0.05 0.95 1.95 2.05 1.05 0.05 0.95 1.95

I need help finding Pi,  It would really help if I could see steps on how you get Pi (expected probability)  

1)

What’s the probability of finding DDT concentration less than or equal 6.0ppm?

Answer 1

Solution

Given That; The data have a mean Stan daad deviat on o ppm 2. -2-05- Lb 3 구5 2 05 6.0 8 0 0 05 8 0 -10.0 -D-05 to 0 12-D2 6 0 *Thank you*