Question

In an investigation on toxins produced by molds that infect corn crops, a biochemist prepared extracts of the mold culture and then measured the amount of the toxic substance per gram of solution. From 10 preparations of the mold culture the following observations on toxic substances (mg) are obtained:

1.2 0.8 0.6 1.1 1.2 0.8 0.7 1.0 0.8 0.9

a. Clearly define the population parameter being estimated by this sample data.

b. What is a point estimation for this population parameter?

c. Assuming normal distribution with standard deviation of 0.2 for the population measurements, what is the Margin of Error (ME) of estimation for the population parameter? Use 99%. Clearly write the formula and show work how you compute it.

d. Use numbers computed in part b and c to build a 99% confidence interval for the population parameter.

e. Interpret the confidence interval in part d.

f. Using normal distribution, what is the probability of having a measurement of 1.2 or higher? Clearly write down the calculator function and its inputs.

Answer 1