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Majesty Video Production Inc. wants the mean length of its advertisements to be 31 seconds. Assume...
majesty video production inc. wants the mean length of its advertisments to be 27 seconds. assume...
majesty video production inc. wants the mean length of its advertisments to be 27 seconds. assume the distribution of ad length follows the normal distribution with a population standad deviation of 2 seconds.suppose we select a sample of 16 ads produced by majesty. what can we say about the shape of the distribution of the sample mean time?what is the standard error of the mean time?(round to 2 decimal places)
CRA CDs Inc. wants the mean lengths of the “cuts” on a CD to be 140...
CRA CDs Inc. wants the mean lengths of the “cuts” on a CD to be 140 seconds (2 minutes and 20 seconds). This will allow the disk jockeys to have plenty of time for commercials within each 10-minute segment. Assume the distribution of the length of the cuts follows a normal distribution with a standard deviation of eleven seconds. Suppose that we select a sample of 12 cuts from various CDs sold by CRA CDs Inc. Use Appendix B.1 for...
d homework Saved CRA CDs Inc. wants the mean lengths of the "cuts" on a CD...
d homework Saved CRA CDs Inc. wants the mean lengths of the "cuts" on a CD to be 135 seconds (2 minutes and 15 seconds). This will allow the disk jockeys to have plenty of time for commercials within each 10-minute segment. Assume the distribution of the length of the cuts follows the normal distribution with a population standard deviation of 8 seconds. Suppose we select a sample of 16 cuts from various CDs sold by CRA CDs Inc. a....
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50, with a...
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50, with a standard deviation of $500. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions (a) What is the likelihood the sample mean is at least $25.00 decimal places and final answer to 4 decimal places.) Round z value to 2 Probability What is the likelihood the sample mean is greater than $2250 but less...
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50, with a...
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50, with a standard deviation of $5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions. (a)What is the likelihood the sample mean is at least $25.00? (Round z value to 2 decimal places and final answer to 4 decimal places.) Probability (b)What is the likelihood the sample mean is greater than $22.50 but less an...
Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these...
Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 35 hours. hours and a standard deviation of 5.2 hours. As a part of its quality assurance program, Power +, Inc. tests samples of 9 batteries. a. What can you say about the shape of the distribution of the sample mean? Sample mean Normal b. What is the standard error of the distribution of...
CRA CDs Inc. wants the mean lengths of the “cuts” on a CD to be 170...
CRA CDs Inc. wants the mean lengths of the “cuts” on a CD to be
170 seconds (2 minutes and 50 seconds). This will allow the disk
jockeys to have plenty of time for commercials within each
10-minute segment. Assume the distribution of the length of the
cuts follows a normal distribution with a standard deviation of
nine seconds. Suppose that we select a sample of 16 cuts from
various CDs sold by CRA CDs Inc. Use Appendix B.1 for...
Crossett Trucking Company claims that the mean weight of its delivery trucks when they are fully...
Crossett Trucking Company claims that the mean weight of its delivery trucks when they are fully loaded is 5,300 pounds and the standard deviation is 170 pounds. Assume that the population follows the normal distribution. Forty trucks are randomly selected and weighed. Within what limits will 99 percent of the sample means occur? (Round your z-value to 2 decimal places and final answers to 1 decimal place.) Sample means _______ to _______
Power+, produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows...
Power+, produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 32 hours and a standard deviation of 5.2 hours. As a part of its testing program, Power+ tests samples of 36 batteries. Use Appendix B.1 for the z-values. a. What can you say about the shape of the distribution of sample mean? b. What is the standard error of the distribution of the sample mean? (Round...
Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 35 hours and a standard deviation of 5.6 hours. As a part of its quality assurance program,
Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 35 hours and a standard deviation of 5.6 hours. As a part of its quality assurance program, Power +, Inc. tests samples of 9 batteries.normal distribution with 1.8667 standard errorWhat proportion of the samples will have a mean useful life of more than 37 hours? (Round your z value to 2 decimal places and final answer to...
d homework Saved CRA CDs Inc. wants the mean lengths of the "cuts" on a CD to be 135 seconds (2 minutes and 15 seconds). This will allow the disk jockeys to have plenty of time for commercials within each 10-minute segment. Assume the distribution of the length of the cuts follows the normal distribution with a population standard deviation of 8 seconds. Suppose we select a sample of 16 cuts from various CDs sold by CRA CDs Inc. a....
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50, with a standard deviation of $500. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions (a) What is the likelihood the sample mean is at least $25.00 decimal places and final answer to 4 decimal places.) Round z value to 2 Probability What is the likelihood the sample mean is greater than $2250 but less...
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50, with a standard deviation of $5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions. (a)What is the likelihood the sample mean is at least $25.00? (Round z value to 2 decimal places and final answer to 4 decimal places.) Probability (b)What is the likelihood the sample mean is greater than $22.50 but less an...
Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 35 hours. hours and a standard deviation of 5.2 hours. As a part of its quality assurance program, Power +, Inc. tests samples of 9 batteries. a. What can you say about the shape of the distribution of the sample mean? Sample mean Normal b. What is the standard error of the distribution of...
CRA CDs Inc. wants the mean lengths of the “cuts” on a CD to be
170 seconds (2 minutes and 50 seconds). This will allow the disk
jockeys to have plenty of time for commercials within each
10-minute segment. Assume the distribution of the length of the
cuts follows a normal distribution with a standard deviation of
nine seconds. Suppose that we select a sample of 16 cuts from
various CDs sold by CRA CDs Inc. Use Appendix B.1 for...
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