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D. Cost of Personal Computers: The average price of a personal computer (PC) is S949. If...
need help The average price of a laptop is $982. Assume laptop prices are approximately normally...
need help The average price of a laptop is $982. Assume laptop prices are approximately normally distributed with a standard deviation of $100. The most expensive 15% of laptops cost less than what amount?
Each sweat shop worker at a computer factory can put together 4.6 computers per hour on...
Each sweat shop worker at a computer factory can put together 4.6 computers per hour on average with a standard deviation of 1 computers. 41 workers are randomly selected to work the next shift at the factory. Round all answers to 4 decimal places where possible and assume a normal distribution. a. What is the distribution of X? X-NC 0,1 b. What is the distribution of a? -NE c. What is the distribution of 2 --N d. If one randomly...
Brandon wants to find a cheap computer, but he knows that computer prices are extremely skewed,...
Brandon wants to find a cheap computer, but he knows that computer prices are extremely skewed, since most computers are very expensive. He knows that computer prices have a mean of $2,151 with a standard deviation of $1,270. Brandon finds the average price of 4 random computers. What is the probability the average price will be more than $3,923?
4 (1 point) A computer retail store has 14 personal computers in stock. A buyer wants...
4 (1 point) A computer retail store has 14 personal computers in stock. A buyer wants to purchase 4 of them. Unknown to either the retail store or the buyer, of the computers in stock have defective hard drives. Assume that the computers are selected at random. (a) In how many different ways can the 4 computers be chosen? answer: 1001 (b) What is the probability that exactly one of the computers will be defective? answer: (c) What is the...
Assume the random variable X is normally distributed with mean μ= 50 and standard deviation σ...
Assume the random variable X is normally distributed with mean μ= 50 and standard deviation σ 7. Find the 87th percentile. The 87th percentlie is Round to two decimal places as needed.) The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips (a) What is the probability that a randomly selected bag contains between 1100 and 1400 chocolate chips, inclusive? (b) What...
Each sweatshop worker at a computer factory can put together 5 computers per hour on average...
Each sweatshop worker at a computer factory can put together 5 computers per hour on average with a standard deviation of 1.0 computers. 9 workers are randomly selected to work the next shift at the factory What is the least number of computers that a group of 9 randomly selected individuals can assemble together to be in the top 15% ( this means the group can assemble in total)
3. Circle your answer to each question. 1. A) Find PC Z b) (.68 c) The...
3. Circle your answer to each question. 1. A) Find PC Z b) (.68 c) The average price for a gallon of gasoline in Connecticut is $3. 73. Assume that the average price is normally distributed with a standard deviation of $.25. What is the probability that a randomly selected gas station in Connecticut charges less than $3.50 per gallon?
According to a website, the average cost of a stay in a hospital for a particular...
According to a website, the average cost of a stay in a hospital for a particular region was 12,500. Assume that this cost is exponentially distributed. a. Determine the probability that a randomly selected patient's stay in a hospital in this region will cost more than $13,000. b. Calculate the probability that a randomly selected patient's stay in a hospital in this region will cost less than $9,700.
Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with means...
Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with means mu equals 255 days μ=255 days and standard deviation sigma equals 14 day σ=14 days. (a) What is the probability that a randomly selected pregnancy lasts less than 250 days? The probability that a randomly selected pregnancy lasts less than 250 is approximately?
1. The average amount parents and children spent per child on back-to-school clothes in Autumn 2010...
1. The average amount parents and children spent per child on back-to-school clothes in Autumn 2010 was $527. Assume the standard deviation is $160 and that the amount spent is normally distributed. What is the probability that the amount spent on a randomly selected child is more than $700? (Round to four decimal places) What is the probability that the amount spent on a randomly selected child is less than $100? (Round to four decimal places) What is the probability...
Each sweat shop worker at a computer factory can put together 4.6 computers per hour on average with a standard deviation of 1 computers. 41 workers are randomly selected to work the next shift at the factory. Round all answers to 4 decimal places where possible and assume a normal distribution. a. What is the distribution of X? X-NC 0,1 b. What is the distribution of a? -NE c. What is the distribution of 2 --N d. If one randomly...
4 (1 point) A computer retail store has 14 personal computers in stock. A buyer wants to purchase 4 of them. Unknown to either the retail store or the buyer, of the computers in stock have defective hard drives. Assume that the computers are selected at random. (a) In how many different ways can the 4 computers be chosen? answer: 1001 (b) What is the probability that exactly one of the computers will be defective? answer: (c) What is the...
Assume the random variable X is normally distributed with mean μ= 50 and standard deviation σ 7. Find the 87th percentile. The 87th percentlie is Round to two decimal places as needed.) The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips (a) What is the probability that a randomly selected bag contains between 1100 and 1400 chocolate chips, inclusive? (b) What...
3. Circle your answer to each question. 1. A) Find PC Z b) (.68 c) The average price for a gallon of gasoline in Connecticut is $3. 73. Assume that the average price is normally distributed with a standard deviation of $.25. What is the probability that a randomly selected gas station in Connecticut charges less than $3.50 per gallon?
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