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Part (d) What percent of the chidren spend over 10 hours per day unupervised? (Round your...
On the planet of Mercury, 4-year-olds average 3.2 hours a day unsupervised. Most of the unsupervised...
On the planet of Mercury, 4-year-olds average 3.2 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.7 hours and the amount of time spent alone is normally distributed. We randomly survey one Mercurian 4-year-old living in a rural area. We are interested in the amount of time X the child spends alone per day. (Source: San Jose Mercury News) Round all answers to 4 decimal places if...
On the planet of Mercury, 4-year-olds average 2.9 hours a day unsupervised. Most of the unsupervised...
On the planet of Mercury, 4-year-olds average 2.9 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.6 hours and the amount of time spent alone is normally distributed. We randomly survey one Mercurian 4-year-old living in a rural area. We are interested in the amount of time X the child spends alone per day. (Source: San Jose Mercury News) Round all answers to 4 decimal places where...
33. -/1.81 points IllowskyIntroStat1 6.HW.071. The length of time it takes to find a parking space...
33. -/1.81 points IllowskyIntroStat1 6.HW.071. The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of 6 minutes and a standard deviation of 2 minutes. Find the probability that it takes at least 8 minutes to find a parking space. (Round your answer to four decimal places.) Submit Answer
A newspaper article reported that people spend a mean of 6 hours per day watching TV,...
A newspaper article reported that people spend a mean of 6 hours per day watching TV, with a standard deviation of 1.8 hours. A psychologist would like to conduct interviews with the 10% of the population who spend the most time watching TV. She assumes that the daily time people spend watching TV is normally distributed. At least how many hours of daily TV watching are necessary for a person to be eligible for the interview? Carry your intermediate computations...
A newspaper article reported that people spend a mean of 7 hours per day watching TV,...
A newspaper article reported that people spend a mean of 7 hours per day watching TV, with a standard deviation of 1.8 hours. A psychologist would like to conduct interviews with the 10% of the population who spend the most time watching TV. She assumes that the daily time people spend watching TV is normally distributed. At least how many hours of daily TV watching are necessary for a person to be eligible for the interview? Carry your intermediate computations...
1. The patient recovery time from a particular surgical procedure is normally distributed with a mean...
1. The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.9 days and a standard deviation of 2.1 days. What is the probability of spending more than 2 days in recovery? (Round your answer to four decimal places.) 2. The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.8 days and a standard deviation of 2.4 days. What is the 90th percentile for recovery times? (Round...
A newspaper article reported that people spend a mean of 7.5 hours per day watching TV,...
A newspaper article reported that people spend a mean of 7.5 hours per day watching TV, with a standard deviation of 1.8 hours. A psychologist would like to conduct interviews with the of the 10 % population who spend the most time watching TV. She assumes that the daily time people spend watching TV is normally distributed. At least how many hours of daily TV watching are necessary for a person to be eligible for the interview? Carry your intermediate...
) According to a certain survey, adults spend 2.252.25 hours per day watching television on a...
) According to a certain survey, adults spend 2.252.25 hours per day watching television on a weekday. Assume that the standard deviation for "time spent watching television on a weekday" is 1.931.93 hours. If a random sample of 6060 adults is obtained, describe the sampling distribution of x overbarx, the mean amount of time spent watching television on a weekday. x overbarx is approximately normal with mu Subscript x overbarμxequals= 2.25 and sigma Subscript x overbarσxequals=0.2491620.249162 . (Round to six...
LUULIS spend scuoying per week have a distribution skewed to the right with a mean of...
LUULIS spend scuoying per week have a distribution skewed to the right with a mean of 8.6 hours and a standard deviation of 28 houm Find the probability that the mean time spent studying per week for a random sample of 49 college students would be between 8.2 and 8.9 hours. Round your answer to two decimal places. Attach File Browse My Computer Browse Content Collection Browse Dropbox QUESTION 4 Let x denote the time it takes to run a...
What is the relationship between the number of minutes per day a woman spends talking on...
What is the relationship between the number of minutes per day a woman spends talking on the phone and the woman's weight? The time on the phone and weight for 9 women are shown in the table below. 28 15 Time Pounds 68 149 22 100 64 124 57 143 67 141 101 77 126 68 127 100 0 a. Find the correlation coefficient: r = Round to 2 decimal places. b. The null and alternative hypotheses for correlation are:...
On the planet of Mercury, 4-year-olds average 2.9 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.6 hours and the amount of time spent alone is normally distributed. We randomly survey one Mercurian 4-year-old living in a rural area. We are interested in the amount of time X the child spends alone per day. (Source: San Jose Mercury News) Round all answers to 4 decimal places where...
33. -/1.81 points IllowskyIntroStat1 6.HW.071. The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of 6 minutes and a standard deviation of 2 minutes. Find the probability that it takes at least 8 minutes to find a parking space. (Round your answer to four decimal places.) Submit Answer
A newspaper article reported that people spend a mean of 6 hours per day watching TV, with a standard deviation of 1.8 hours. A psychologist would like to conduct interviews with the 10% of the population who spend the most time watching TV. She assumes that the daily time people spend watching TV is normally distributed. At least how many hours of daily TV watching are necessary for a person to be eligible for the interview? Carry your intermediate computations...
A newspaper article reported that people spend a mean of 7 hours per day watching TV, with a standard deviation of 1.8 hours. A psychologist would like to conduct interviews with the 10% of the population who spend the most time watching TV. She assumes that the daily time people spend watching TV is normally distributed. At least how many hours of daily TV watching are necessary for a person to be eligible for the interview? Carry your intermediate computations...
LUULIS spend scuoying per week have a distribution skewed to the right with a mean of 8.6 hours and a standard deviation of 28 houm Find the probability that the mean time spent studying per week for a random sample of 49 college students would be between 8.2 and 8.9 hours. Round your answer to two decimal places. Attach File Browse My Computer Browse Content Collection Browse Dropbox QUESTION 4 Let x denote the time it takes to run a...
What is the relationship between the number of minutes per day a woman spends talking on the phone and the woman's weight? The time on the phone and weight for 9 women are shown in the table below. 28 15 Time Pounds 68 149 22 100 64 124 57 143 67 141 101 77 126 68 127 100 0 a. Find the correlation coefficient: r = Round to 2 decimal places. b. The null and alternative hypotheses for correlation are:...
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