please give right decimal places
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please give right decimal places
The average number of moves a person makes in his or...
The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months,...
The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and the standard deviation is 6 months. Find the probability that a random sample of 35 smoke detectors will have a mean lifetime between 59 and 62 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answer to four decimal places and intermediate z-value calculations to two decimal places P (59 <...
The national average SAT score (for verbal and math) is 1028. Suppose that nothing is known...
The national average SAT score (for verbal and math) is 1028. Suppose that nothing is known about the shape of the distribution and that the standard deviation is 100. Round the final answer to four decimal places and intermediate z-value calculations to two decimal places Source: New York Times Almanac. Part 1 out of 2 If a random sample of 245 scores was selected, find the probability that the sample mean is greater than 1041. Assume that the sample is...
Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5...
Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5 years or months, and the standard deviation is 7 months. Find the probability that a random sample of 29 smoke detectors will have a mean lifetime between 56 and 63 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answer to at least four decimal places and intermediate z-value calculations to two...
Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5...
Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5 years or months, and the standard deviation is 7 months. Find the probability that a random sample of 29 smoke detectors will have a mean lifetime between 56 and 63 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answer to at least four decimal places and intermediate z-value calculations to two...
Cell Phone Lifetimes A recent study of the lifetimes of cell phones found the average is...
Cell Phone Lifetimes A recent study of the lifetimes of cell phones found the average is 24.3 months. The standard deviation is 2.6 months. If a company provides its 32 employees with a cell phone, find the probability that the mean lifetime of these phones will be less than 23.7 months. Assume cell phone life is a normally distributed variable, the sample is taken from a large population and the correction factor can be ignored. Round the final answer to...
Question 11 of 13 (1 point) Attempt 1 of Unlimited 6.3 Section Exercise Life of Smoke...
Question 11 of 13 (1 point) Attempt 1 of Unlimited 6.3 Section Exercise Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and the standard deviation is 7 months. Find the probability that a random sample of 27 smoke detectors will have a mean lifetime between 58 and 62 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the...
Medicare Hospital Insurance The average yearly Medicare Hospital Insurance benefit per person was $4064 in a...
Medicare Hospital Insurance The average yearly Medicare Hospital Insurance benefit per person was $4064 in a recent year. Suppose the benefits are normally distributed with a standard deviation of $460. Round the final answers to at least four decimal places and intermediate z-value calculations to two decimal places. Part 1 of 2 Find the probability that the mean benefit for a random sample of 28 patients is less than $3870. p(x < 3870) - LE dl. Part 2 of 2...
please round to 4 decimal places Suppose the age that children learn to walk is normally distributed with mean 12 mo...
please round to 4 decimal places
Suppose the age that children learn to walk is normally distributed with mean 12 months and standard deviation 1.5 month. 15 randomly selected people where possible. were asked what age they learned to walk. Round all answers to 4 decimal places What is the distribution of X? X~N b. What is the distribution of ? N c. What is the probability that one randomly selected person learned to walk when the person was between...
A survey found that the American family generates an average of 17.2 pounds of glass garbage...
A survey found that the American family generates an average of 17.2 pounds of glass garbage each year. Assume the standard deviation of the distribution is 2.5 pounds. Find the probability that the mean of a sample of 51 families will be between 16.7 and 17.7 pounds. Assume that the sample is taken from a large population and the correction factor can be ignored. Round your final answer to four decimal places and intermediate z-value calculations to two decimal places...
2 pages of questions . Round all answers to four decimal places unless directed otherwise. SHOW...
2 pages of questions .
Round all answers to four decimal places unless directed otherwise. SHOW WORK Scotland County has a population of 35,093 people. Or those, 22,429 people are registered to vote. 1. What proportion of Scotland County citizens are registered to vote? 2. If 50 people are randomly selected, what is the probability that at least 75% of them are registered to vote? 3. If 100 people are randomly selected, what is the probability that at least 75%...
The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and the standard deviation is 6 months. Find the probability that a random sample of 35 smoke detectors will have a mean lifetime between 59 and 62 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the final answer to four decimal places and intermediate z-value calculations to two decimal places P (59 <...
The national average SAT score (for verbal and math) is 1028. Suppose that nothing is known about the shape of the distribution and that the standard deviation is 100. Round the final answer to four decimal places and intermediate z-value calculations to two decimal places Source: New York Times Almanac. Part 1 out of 2 If a random sample of 245 scores was selected, find the probability that the sample mean is greater than 1041. Assume that the sample is...
Question 11 of 13 (1 point) Attempt 1 of Unlimited 6.3 Section Exercise Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and the standard deviation is 7 months. Find the probability that a random sample of 27 smoke detectors will have a mean lifetime between 58 and 62 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the...
Medicare Hospital Insurance The average yearly Medicare Hospital Insurance benefit per person was $4064 in a recent year. Suppose the benefits are normally distributed with a standard deviation of $460. Round the final answers to at least four decimal places and intermediate z-value calculations to two decimal places. Part 1 of 2 Find the probability that the mean benefit for a random sample of 28 patients is less than $3870. p(x < 3870) - LE dl. Part 2 of 2...
please round to 4 decimal places
Suppose the age that children learn to walk is normally distributed with mean 12 months and standard deviation 1.5 month. 15 randomly selected people where possible. were asked what age they learned to walk. Round all answers to 4 decimal places What is the distribution of X? X~N b. What is the distribution of ? N c. What is the probability that one randomly selected person learned to walk when the person was between...
A survey found that the American family generates an average of 17.2 pounds of glass garbage each year. Assume the standard deviation of the distribution is 2.5 pounds. Find the probability that the mean of a sample of 51 families will be between 16.7 and 17.7 pounds. Assume that the sample is taken from a large population and the correction factor can be ignored. Round your final answer to four decimal places and intermediate z-value calculations to two decimal places...
2 pages of questions .
Round all answers to four decimal places unless directed otherwise. SHOW WORK Scotland County has a population of 35,093 people. Or those, 22,429 people are registered to vote. 1. What proportion of Scotland County citizens are registered to vote? 2. If 50 people are randomly selected, what is the probability that at least 75% of them are registered to vote? 3. If 100 people are randomly selected, what is the probability that at least 75%...
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