Westonci.ca makes finding answers easy, with a community of experts ready to provide you with the information you seek. Join our platform to get reliable answers to your questions from a knowledgeable community of experts. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately.
Sagot :
The probability that a randomly selected PC costs more than 1200 will be 0.006. The least expensive 10% of personal computers cost less than what amount will be 820.8.
What is a normal distribution?
The Gaussian distribution is another name for it. The most significant continuous probability distribution is this one. Because the curve resembles a bell, it is also known as a bell curve.
The z-score is given as
z = (x – μ) / σ
Where μ is the mean, σ is the standard deviation, and x is the sample.
The average price of a personal computer (PC) is $949.
If the computer prices are approximately normally distributed and standard deviation is $100.
Then the probability that a randomly selected PC costs more than 1200 will be
z = (1200 – 949) / 100
z = 2.51
Then the probability will be
P(x > 1200) = P(z > 1200)
P(x > 1200) = 1 – P(z < 1200)
P(x > 1200) = 1 – 0.99396
P(x > 1200) = 0.0060366
The least expensive 10% of personal computers cost less than what amount will be
z-value for 10% will be -1.282.
– 1.282 = (x – 949) / 100
– 128.2 = x – 949
x = 820.8
More about the normal distribution link is given below.
https://brainly.com/question/12421652
#SPJ1
Thank you for choosing our platform. We're dedicated to providing the best answers for all your questions. Visit us again. We appreciate your time. Please come back anytime for the latest information and answers to your questions. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.
