Kindly do make vuhelps your default page and keep viewing it to get up to date information about current fresh exams. Also follow the blog. Send your papers to make them here uptodate at firstname.lastname@example.org or feel free to call at 03455242488
Q: # 1:
a) The time taken to complete jobs of a particular type is known to be Normal distributed with mean 6.4 hours and standard deviation 1.2 hours. What is the probability that a randomly selected job less then 7 hours takes. (5)
b) A Normal distribution (N) has mean 140 and standard Deviation 8. Find probability if N less then 156. Pr ( N < 156 ). (5)
Q: # 2:
What is the normal cumulative function for a z-value =0.38? Use suitable EXCEL function for calculation. (5)
Q: # 3:
Find the inverse of the standard normal cumulative distribution when arithmetic mean is 45, standard deviation is 1.25 and the probability corresponding to the normal distribution is 0.65. (5)
For Practice (Ungraded Questions)
Q: # 1
A Normal distribution has mean 56 and Standard deviation 12. if an item is picked at random from the distribution, what is the probability that its value will be;
a) Less then 30;
b) Greater then 80.
Q: # 2
What is the normal cumulative function for a z-value =2.73? Use suitable EXCEL function for calculation.
The weight of a metal components produce by a machine are distributed normally with mean 14 lbs and standard Deviation 0.12lbs. What is the probability that a component sampled randomly from production will have a weight greater then 14.3 lbs.