Random samples of size 36 are taken from a process (an infinite ...

[ss2343]

Random samples of size 36 are taken from a process (an infinite population) whose mean and standard deviation are 20 and 15, respectively. The distribution of the population is unknown. The mean and the standard error of the distribution of sample mean are _____.
 a. 36 and 15
  b. 20 and 15
  c. 20 and 0.417
  d. 20 and 2.5

Question 2

A life insurance company has determined that each week an average of 7 claims is filed in its Nashville branch.
 a. Define the random variable in words for this experiment.
  b. What is the probability that during the next week exactly 7 claims will be filed?
  c. What is the probability that during the next week no claims will be filed?
  d. What is the probability that during the next week fewer than 4 claims will be filed?
  e. What is the probability that during the next week at least 17 claims will be filed?

[yasmin]

Answer to Question 1

d

Answer to Question 2

a. x = the number of claims filed in a one-week period
b. .1490
c. .0009
d. .0818
e. .0010

[ss2343]

YES! Correct, THANKS for helping me on my review

[kthug]

Thanks for the timely response, appreciate it