The GPAs of a large population of college students are approximately normally distributed with mean 2.4...
The GPAs of a large population of college students are approximately normally distributed with mean 2.4 and standard deviation 0.8. Use R to find the probability that a randomly selected student will have a GPA greater than 3.0? (Include the R -code with the output).
I really need help with the R code
Homework Answers
Here' the answer. Write back in case you've any questions.
I have coded P(X>3 ) in R.
### Code to take out probability P(X>3) ####
Mean = 2.4
Stdev = 0.8
X = 3
Z <- (X-Mean)/Stdev
# P(X>3) = 1 - P(X<=3)
probability <- 1 - pnorm(Z)
"probability " variable has the value probability 0.2266274
Answer: 0.2266274
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