Question
We are managing a large soy bean farm. To estimate our revenues for the coming year,
we need to estimate our crop yield. Soy bean yields are measured by pods/plant. We are
planning for a yield of 40 pods/plant.
a. We take a random sample of 64 soy bean plants and get a sample mean yield of 38.6
pods/plant with a sample standard deviation of 4.8 pods/plant. Assuming that our
population pods/plant is 40, what is the probability of obtaining the sample we got or one
that varies more in the same direction from the assumed mean? (Use Minitab.)
we need to estimate our crop yield. Soy bean yields are measured by pods/plant. We are
planning for a yield of 40 pods/plant.
a. We take a random sample of 64 soy bean plants and get a sample mean yield of 38.6
pods/plant with a sample standard deviation of 4.8 pods/plant. Assuming that our
population pods/plant is 40, what is the probability of obtaining the sample we got or one
that varies more in the same direction from the assumed mean? (Use Minitab.)
Answers
PsyDAG
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.