A report says that the average amount of time a 10-year-old American child spends playing outdoors...
A report says that the average amount of time a 10-year-old American child spends playing outdoors per day is between 20.32 and 24.56 minutes. What is the margin of error in this report?
Homework Answers
| Margin of error =2.12 |
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A report says that the average amount of time a 10-year-old
American child spends playing outdoors...
Question 4: In many American families, both parents work outside the home, while children spend time...
Question 4: In many American families, both parents work outside the home, while children spend time at daycare centers or are cared for by other relatives. The mean amount of time fathers spend with their child(ren) 0-6 years old per day is 1.22 hours. Suppose this time distribution is approximately normal with standard deviation 0.60 hours, and suppose a father with a child 0-6 years old is randomly selected. a. What is the probability that the father spends at least...
Download Page > of 10 ZOOM 2 2. According to the American Time Use Survey, the...
Download Page > of 10 ZOOM 2 2. According to the American Time Use Survey, the typical American spends 154.8 minutes per day watching television. A survey of 50 internet users results in a mean time watching television per day of 128.7 minutes with a standard deviation of 46.5 minutes. Test whether the internet users spend less time watching television at 1% level of significance.
The Bureau of Labor Statistics’ American Time Use Survey showed that the amount of time spent...
The Bureau of Labor Statistics’ American Time Use Survey showed that the amount of time spent using a computer for leisure varied greatly by age. Individuals age 75 and over averaged 0.35 hour (21 minutes) per day using a computer for leisure. Individuals ages 15 to 19 spend 1.1 hour per day using a computer for leisure. If these times follow an exponential distribution, find the proportion of each group that spends: Less than 18 minutes per day using a...
The amount of time that a customer spends waiting at an airport check-in counter is a...
The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.2 minutes and standard deviation 1.5 minutes. Suppose that a random sample of n-49 independent customers is observed. Find the approximate probability that the average time waiting in line for these customers is (a) Greater than 10 minutes (b) Between 6 and 10 minutes (c) Less than 6 minutes
Question 7 1.25 pts The Wall Street Journal reported that the average amount of time that...
Question 7 1.25 pts The Wall Street Journal reported that the average amount of time that a French person spends eating lunch at a restaurant is 22 minutes. Perform a hypothesis test to determine if a difference exists between the average time an American spends eating lunch when compared to a person from France. The following data represents the time, in minutes, that random French and American diners spent at lunch. Assume that the population variances are equal. American 21...
Please write neatly ? Problem 4 Four-year-olds in China average 5 unsupervised hours per day. Most...
Please write neatly ?
Problem 4 Four-year-olds in China average 5 unsupervised hours per day. Most of the unsupervised children live in rural areas, considered safe. Suppose that the amount of unsupervised time is normally distributed with standard deviation 1 A Chinese 4-year-old is randomly selected from a rural area. We are interested in the amount of time the child spends alone per day. In each appropriate box you are to enter either a rational number in "p/q" format or...
A report says that the average energy content of candy bars is between 220 and 314...
A report says that the average energy content of candy bars is between 220 and 314 calories. What is the margin of error in this report? Select one or more: a. ME = 104 b. ME = 47 c. ME = 96 d. ME = 64.5
Four-year-olds in China average 3.5 unsupervised hours per day. Most of the unsupervised children live in...
Four-year-olds in China average 3.5 unsupervised hours per day. Most of the unsupervised children live in rural areas, considered safe. Suppose that the amount of unsupervised time is normally distributed with standard deviation 1 . A Chinese 4-year-old is randomly selected from a rural area. We are interested in the amount of time the child spends alone per day. In each appropriate box you are to enter either a rational number in "p/q" format or a decimal value accurate to...
Problem 4 Four year-olds in China average 5 unsupervised hours per day. Most of the unsupervised...
Problem 4 Four year-olds in China average 5 unsupervised hours per day. Most of the unsupervised children live in rural areas, considered safe. Suppose that the amount of unsupervised time is normally distributed with standard deviation 1. A Chinese 4-year-old is randomly selected from a rural area. We are interested in the amount of time the child spends alone per day. In each appropriate box you are to enter either a rational number in "p/q" format or a decimal value...
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...
Question 4: In many American families, both parents work outside the home, while children spend time at daycare centers or are cared for by other relatives. The mean amount of time fathers spend with their child(ren) 0-6 years old per day is 1.22 hours. Suppose this time distribution is approximately normal with standard deviation 0.60 hours, and suppose a father with a child 0-6 years old is randomly selected. a. What is the probability that the father spends at least...
Download Page > of 10 ZOOM 2 2. According to the American Time Use Survey, the typical American spends 154.8 minutes per day watching television. A survey of 50 internet users results in a mean time watching television per day of 128.7 minutes with a standard deviation of 46.5 minutes. Test whether the internet users spend less time watching television at 1% level of significance.
The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.2 minutes and standard deviation 1.5 minutes. Suppose that a random sample of n-49 independent customers is observed. Find the approximate probability that the average time waiting in line for these customers is (a) Greater than 10 minutes (b) Between 6 and 10 minutes (c) Less than 6 minutes
Question 7 1.25 pts The Wall Street Journal reported that the average amount of time that a French person spends eating lunch at a restaurant is 22 minutes. Perform a hypothesis test to determine if a difference exists between the average time an American spends eating lunch when compared to a person from France. The following data represents the time, in minutes, that random French and American diners spent at lunch. Assume that the population variances are equal. American 21...
Please write neatly ?
Problem 4 Four-year-olds in China average 5 unsupervised hours per day. Most of the unsupervised children live in rural areas, considered safe. Suppose that the amount of unsupervised time is normally distributed with standard deviation 1 A Chinese 4-year-old is randomly selected from a rural area. We are interested in the amount of time the child spends alone per day. In each appropriate box you are to enter either a rational number in "p/q" format or...
Four-year-olds in China average 3.5 unsupervised hours per day. Most of the unsupervised children live in rural areas, considered safe. Suppose that the amount of unsupervised time is normally distributed with standard deviation 1 . A Chinese 4-year-old is randomly selected from a rural area. We are interested in the amount of time the child spends alone per day. In each appropriate box you are to enter either a rational number in "p/q" format or a decimal value accurate to...
Problem 4 Four year-olds in China average 5 unsupervised hours per day. Most of the unsupervised children live in rural areas, considered safe. Suppose that the amount of unsupervised time is normally distributed with standard deviation 1. A Chinese 4-year-old is randomly selected from a rural area. We are interested in the amount of time the child spends alone per day. In each appropriate box you are to enter either a rational number in "p/q" format or a decimal value...
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...
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