SOLUTION: Many backyard gardeners prefer Silver Queen Hybrid corn. The temperature of the soil should be ay least 65 degrees before planting and the growing time is approximately normal with

Algebra ->  Probability-and-statistics -> SOLUTION: Many backyard gardeners prefer Silver Queen Hybrid corn. The temperature of the soil should be ay least 65 degrees before planting and the growing time is approximately normal with      Log On


   



Question 1026196: Many backyard gardeners prefer Silver Queen Hybrid corn. The temperature of the soil should be ay least 65 degrees before planting and the growing time is approximately normal with mean 92 days and standard deviation 5 days.
Suppose a row in a backyard garden contains 12 plants. What is the probability that four will be ready for dinner by the 95th day?

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
The probability that a plant is ready for dinner by the 95th day is
P%28X%3E=95%29+=+P%28Z+=+%28X-92%29%2F5+%3E=+%2895-92%29%2F5+=0.6%29+=+0.2743
The probability that four of the twelve plants are ready by the 95th day is