1. An airline knows from experience that the distribution of the number of suitcases that get...
a) In one week, what is the probability that the airline will lose between 10 and 20 suitcases?
b) In one year, how many weeks would you expect the airline to lose between 10 and 20 suitcases?
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1. An airline knows from experience that the distribution of the
number of suitcases that get...
An airline knows from experience that the distribution of the number of suitcases that get lost...
An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is approximately normal with mean=15.5 and standard deviation=3.6. What is the probability that during a given week the airline will lose between ten and 20 suitcases
Provide an appropriate response. Use the Standard Normal Table to find the probability. 18) An airline...
Provide an appropriate response. Use the Standard Normal Table to find the probability. 18) An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is approximately normal with μ = 15.5 and σ-36. In one year, how many weeks would you expect the airline to lose between 10 and 20 suitcases?
Provide an appropriate response. Use the Standard Normal Table to find the probability. An airline knows...
Provide an appropriate response. Use the Standard Normal Table to find the probability. An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is approximately normal with muμequals=15.5 and sigmaσequals=3.6. What is the probability that during a given week the airline will lose less than 20 suitcases?
1) The lengths of pregnancies of humans are normally distributed with a mean of 268 days...
1) The lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard deviation of 15 days. Find the probability of a pregnancy lasting less than 250 days. 2) The lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard deviation of 15 days. Find the probability of a pregnancy lasting more than 300 days. 3) An airline knows from experience that the distribution of the number...
1) In a population survey of patients in a rehabilitation hospital, the mean length of stay...
1) In a population survey of patients in a rehabilitation hospital, the mean length of stay in the hospital was 12.0 weeks with a standard deviation equal to 1.0 week. The population distribution was normal. a. Out of 100 patients how many would you expect to stay longer than 13 weeks? b. What is the percentile rank of a stay of 11.3 weeks? c. What percentage of patients would you expect to stay between 11.5 weeks and 13.0 weeks? 2)On...
The shape of the distribution of the time required to get an oil change at a...
The shape of the distribution of the time required to get an oil change at a 10-minute oil-change facility is unknown. However, records indicate that the mean time is 11.2 minutes, and the standard deviation is 3.7 minutes. Complete parts (a) through (c). (a) To compute probabilities regarding the sample mean using the normal model, what size sample would be required? O A. The normal model cannot be used if the shape of the distribution is unknown. OB. Any sample...
1. X has a normal distribution with the given mean and standard deviation. Find the indicated...
1. X has a normal distribution with the given mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 41, σ = 20, find P(35 ≤ X ≤ 42) 2. Find the probability that a normal variable takes on values within 0.9 standard deviations of its mean. (Round your decimal to four decimal places.) 3. Suppose X is a normal random variable with mean μ = 100 and standard deviation σ = 10....
2. The daily profit X from a drink vending machine placed in the entrance area of a school buildi...
2. The daily profit X from a drink vending machine placed in the entrance area of a school building of a university follows the normal distribution N(μ, σ2) with unknown μ and σ2. Naturally, the mean (the average daily profit) varies from building to building. Based on past experience, it is determined that μ follows a normal distribution with mean μ°-$30 and standard deviation Do $1.75. If one of these drink machines in a certain building shows an average daily...
The shape of the distribution of the time required to get an ol change at a...
The shape of the distribution of the time required to get an ol change at a 20-minute oil change facility is unknown. However, records indicate that the mean time is 21.1 minutes, and the standard deviation is 4.3 minutes. Complete parts (a) through (c) (a) To compute probabilities regarding the sample mean using the normal model, what size sample would be required? OA. The sample size needs to be greater than or equal to 30. OB. The sample size needs...
The shape of the distribution of the time required to get an oil change at a...
The shape of the distribution of the time required to get an oil change at a 20-minute oil-change facility is unknown. However, records indicate that the mean time is 21.1 minutes and the standard deviation is 3.7 minutes (a) To compute probabilities regarding the sample mean using the normal model, what size sample would be required? A.Any sample size could be used. B.The sample size needs to be greater than or equal to 30. C.The sample size needs to be...
Provide an appropriate response. Use the Standard Normal Table to find the probability. 18) An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is approximately normal with μ = 15.5 and σ-36. In one year, how many weeks would you expect the airline to lose between 10 and 20 suitcases?
1) The lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard deviation of 15 days. Find the probability of a pregnancy lasting less than 250 days. 2) The lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard deviation of 15 days. Find the probability of a pregnancy lasting more than 300 days. 3) An airline knows from experience that the distribution of the number...
The shape of the distribution of the time required to get an oil change at a 10-minute oil-change facility is unknown. However, records indicate that the mean time is 11.2 minutes, and the standard deviation is 3.7 minutes. Complete parts (a) through (c). (a) To compute probabilities regarding the sample mean using the normal model, what size sample would be required? O A. The normal model cannot be used if the shape of the distribution is unknown. OB. Any sample...
2. The daily profit X from a drink vending machine placed in the entrance area of a school building of a university follows the normal distribution N(μ, σ2) with unknown μ and σ2. Naturally, the mean (the average daily profit) varies from building to building. Based on past experience, it is determined that μ follows a normal distribution with mean μ°-$30 and standard deviation Do $1.75. If one of these drink machines in a certain building shows an average daily...
The shape of the distribution of the time required to get an ol change at a 20-minute oil change facility is unknown. However, records indicate that the mean time is 21.1 minutes, and the standard deviation is 4.3 minutes. Complete parts (a) through (c) (a) To compute probabilities regarding the sample mean using the normal model, what size sample would be required? OA. The sample size needs to be greater than or equal to 30. OB. The sample size needs...
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