A flooring company sells carpet by the metre off of a standard sized roll. The mean...
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A flooring company sells carpet by the metre off of a standard sized roll. The mean amount of carpet sold per month is known to have normal distribution. If the probability of selling more than 1,000 metres per month is 0.0668 and the standard deviation is 100 metres, what is the mean amount of carpet sold? |
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A flooring company sells carpet by the metre off of a standard
sized roll. The mean...
the number of hamburgers A fast-food restaurant sells take-home hamburgers. It is measured that sold per...
the number of hamburgers A fast-food restaurant sells take-home hamburgers. It is measured that sold per day follows a normal distribution with mean 150 and standard deviation 30. a. What is the probability that the restaurant sells more than 160 hamburgers in a day? b. What is the probability that the restaurant sells between 130 and 160 hamburgers in a day? c. The probability is 0.1 that the restaurant sells less than how many hamburgers in a day?
The number of flaws per square yard in a type of carpet material varies with mean...
The number of flaws per square yard in a type of carpet material varies with mean 1.4 flaws per square yard and standard deviation 1 flaws per square yard. This population distribution cannot be normal, because a count takes only whole-number values. An inspector studies 171 square yards of the material, records the number of flaws found in each square yard, and calculates x, the mean number of flaws per square yard inspected. Use the central limit theorem to find...
The number of flaws per square yard in a type of carpet material varies with mean...
The number of flaws per square yard in a type of carpet material varies with mean 1.2 flaws per square yard and standard deviation 1.2 flaws per square yard. This population distribution cannot be normal, because a count takes only whole-number values. An inspector studies 170 square yards of the material, records the number of flaws found in each square yard, and calculates x, the mean number of flaws per square yard inspected. Use the central limit theorem to find...
The number of flaws per square yard in a type of carpet material varies with mean...
The number of flaws per square yard in a type of carpet material varies with mean 1.4 flaws per square yard and standard deviation 1.2 flaws per square yard. This population distribution cannot be normal, because a count takes only whole-number values. An inspector studies 175 square yards of the material, records the number of flaws found in each square yard, and calculates x, the mean number of flaws per square yard inspected. Use the central limit theorem to find...
I. Assume that z is normally distributed with a specified mean and standard deviation. Find the...
I. Assume that z is normally distributed with a specified mean and standard deviation. Find the indicated probabilities: c, p(x 120); μ 100 ; ơ--15 2. Find z such that 28% of the standard normal curve lies to the right of z. 3. A person's blood glucose level and diabetes are closely related. Let x be a random variable measured in milligrams of glucose per deciliter of blood. After a 12- hour fast, the random variable x will have a...
A random variable follows the normal probability distribution with a mean of 100 and a standard...
A random variable follows the normal probability distribution with a mean of 100 and a standard deviation of 10. Determine the probability for a randomly selected value from this population in parts a through d below. Click here to view page 1 of the standard normal probability table. Click here to view page 2 of the standard normal probability table. a. What is the probability that the value is less than 80? The probability that the value is less than...
Assume that IQ's follow a Normal distribution with a mean mu=100 and standard deviation sigma=16. What...
Assume that IQ's follow a Normal distribution with a mean mu=100 and standard deviation sigma=16. What is the probability that no more than 5 people in a random sample of size n=9 have IQ's between 90 and 110?
A food company sells salmon to various customers. The mean weig discount outlet stores in pallets...
A food company sells salmon to various customers. The mean weig discount outlet stores in pallets of 64 salmon. To forecast costs, t ht of the salmon is 31 lb with a standard deviation of 2 lbs. The company ships them to restaurants in boxes of 9 salmon, to grocery stores in cart ons of 36 salmon, and to iles ostmers. the shipping department needs to est mate the standard deviation of the mean weight of the salmon in each...
Consider a normal distribution with mean 25 and standard deviation 5. What is the probability a...
Consider a normal distribution with mean 25 and standard
deviation 5. What is the probability a value selected at random
from this distribution is greater than 25? (Round your answer to
two decimal places.)
Assume that x has a normal distribution with the specified
mean and standard deviation. Find the indicated probability. (Round
your answer to four decimal places.)
μ = 14.9; σ = 3.5
P(10 ≤ x ≤ 26) =
Need Help? Read It
Assume that x has a...
13. +-6.66 points WaneFMAC7 9.5.033. My Notes IQ scores (as measured by the Stanford-Binet intelligence test) in a certain country are normally distributed with a mean of 100 and a standard deviation...
13. +-6.66 points WaneFMAC7 9.5.033. My Notes IQ scores (as measured by the Stanford-Binet intelligence test) in a certain country are normally distributed with a mean of 100 and a standard deviation of 11. Find the approximate number of people in the country (assuming a total population of 323,000,000) with an IQ higher than 120. (Round your answer to the nearest hundred thousand.) people 14. 0/6.66 points | Previous Answers My Notes This exercise uses the normal probability density function...
the number of hamburgers A fast-food restaurant sells take-home hamburgers. It is measured that sold per day follows a normal distribution with mean 150 and standard deviation 30. a. What is the probability that the restaurant sells more than 160 hamburgers in a day? b. What is the probability that the restaurant sells between 130 and 160 hamburgers in a day? c. The probability is 0.1 that the restaurant sells less than how many hamburgers in a day?
I. Assume that z is normally distributed with a specified mean and standard deviation. Find the indicated probabilities: c, p(x 120); μ 100 ; ơ--15 2. Find z such that 28% of the standard normal curve lies to the right of z. 3. A person's blood glucose level and diabetes are closely related. Let x be a random variable measured in milligrams of glucose per deciliter of blood. After a 12- hour fast, the random variable x will have a...
A food company sells salmon to various customers. The mean weig discount outlet stores in pallets of 64 salmon. To forecast costs, t ht of the salmon is 31 lb with a standard deviation of 2 lbs. The company ships them to restaurants in boxes of 9 salmon, to grocery stores in cart ons of 36 salmon, and to iles ostmers. the shipping department needs to est mate the standard deviation of the mean weight of the salmon in each...
Consider a normal distribution with mean 25 and standard
deviation 5. What is the probability a value selected at random
from this distribution is greater than 25? (Round your answer to
two decimal places.)
Assume that x has a normal distribution with the specified
mean and standard deviation. Find the indicated probability. (Round
your answer to four decimal places.)
μ = 14.9; σ = 3.5
P(10 ≤ x ≤ 26) =
Need Help? Read It
Assume that x has a...
13. +-6.66 points WaneFMAC7 9.5.033. My Notes IQ scores (as measured by the Stanford-Binet intelligence test) in a certain country are normally distributed with a mean of 100 and a standard deviation of 11. Find the approximate number of people in the country (assuming a total population of 323,000,000) with an IQ higher than 120. (Round your answer to the nearest hundred thousand.) people 14. 0/6.66 points | Previous Answers My Notes This exercise uses the normal probability density function...
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