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2. WPU conducted a study to find the average amount of time faculty members spend commuting...
WPU conducted a study to find the average amount of time faculty members spend commuting to...
WPU conducted a study to find the average amount of time faculty members spend commuting to the University campus. They surveyed 196 faculty drivers and the study found out that the faculty driver’s population spent an average of 13 hours commuting with a standard deviation of 11 hours. (a) What is the standard error of the mean? (b) Compute the probability the sample mean is greater than 13 hours? (c) Compute the probability the sample mean is less than 12...
MSU conducted a study to find the average amount of time faculty members spend commuting to...
MSU conducted a study to find the average amount of time faculty members spend commuting to the University campus. They surveyed 196 faculty drivers and the study found out that the faculty driver’s population spent an average of 13 hours commuting with a standard deviation of 11 hours. (a) What is the standard error of the mean? (b) Compute the probability the sample mean is greater than 13 hours? (c) Compute the probability the sample mean is less than 12...
The NJ Department of Transportation conducted a study to find the average amount of time car...
The NJ Department of Transportation conducted a study to find the average amount of time car drivers spend commuting during weekends. They surveyed 196 car drivers and the study found out that the driver’s population spent an average of 13 hours commuting with a standard deviation of 11 hours. (a) What is the standard error of the mean? (b) Compute the probability the sample mean is greater than 15 hours? (c) Compute the probability the sample mean is less than...
8. A study conducted a few years ago claims that the adult males spend an average...
8. A study conducted a few years ago claims that the adult males spend an average of 11 hours a week watching sports on television. A recent sample of 100 adult males showed that the mean time they spend per week watching sports on television is 9.50 hours with a standard deviation of 2.2 hours. a. Use the result to give a 95% confidence interval for the mean time they spend per week watching sports on television. b. Does the...
The time that university students spend on the internet follows a normal distribution. At flinders university,...
The time that university students spend on the internet follows a normal distribution. At flinders university, the mean time is 5 hours with a standard deviation of 1.2 hours. What is the probability that the average time 100 random students on campus willl spend more than 5 hours on the internet? a) 0.5 b) 1 c) 0.2 d) 0
According to a recent study, the population of U.S. citizens spend, on average, 30 hours per...
According to a recent study, the population of U.S. citizens spend, on average, 30 hours per week watching television, with a standard deviation of 5.25 hours. If a random sample of n = 36 consumers is drawn from this population, what is the probability that the sample mean will be no more than 29.3 hours per week?
A study was conducted in 1980 that found that New York had the slowest highway drivers...
A study was conducted in 1980 that found that New York had the slowest highway drivers in the country. The drivers traveled at an average speed of 52.7 mph. Assume the population standard deviation is 6 mph. What is the probability that a sample of 45 of the drivers will have a sample mean less than 51 mph? a) what is the standard error of the Sampling distribution? b) what is the probability that a sample of 45 of the...
The time college students spend on the internet follows a Normal distribution. At Johnson University, the...
The time college students spend on the internet follows a Normal distribution. At Johnson University, the mean time is 6 hours per day with a standard deviation of 1.5 hours per day. If 100 Johnson University students are randomly selected, what is the probability that the average time spent on the internet will be more than 6.2 hours per day? ____________ Round to 4 places. If 100 Johnson University students are randomly selected, what is the probability that the average...
1. Nordstrom stores conducted a study to examine the preferences of the color for women's shirts...
1. Nordstrom stores conducted a study to examine the preferences of the color for women's shirts with the following results ge 50 or older Age less than 5 White Black Brown Yellow Blue 20 50 60 130 30 40 70 90 120 60 (a) What is the probability that a randomly selected woman like a black case the best (b) What is the probability that brown or black case is the favorite color (c) Assuming a woman is less than...
A graduate student believed that, on the average, college students spend more time on the Internet...
A graduate student believed that, on the average, college students spend more time on the Internet compared to the rest of the population. She conducted a study to determine if her hypothesis was correct. The student randomly surveyed 25 students and found that the average amount of time spent on the Internet was 8.75 hours per week with a SD = 3 hours. The last census found that, on the average, people spent 11 hour per week on the Internet....
8. A study conducted a few years ago claims that the adult males spend an average of 11 hours a week watching sports on television. A recent sample of 100 adult males showed that the mean time they spend per week watching sports on television is 9.50 hours with a standard deviation of 2.2 hours. a. Use the result to give a 95% confidence interval for the mean time they spend per week watching sports on television. b. Does the...
1. Nordstrom stores conducted a study to examine the preferences of the color for women's shirts with the following results ge 50 or older Age less than 5 White Black Brown Yellow Blue 20 50 60 130 30 40 70 90 120 60 (a) What is the probability that a randomly selected woman like a black case the best (b) What is the probability that brown or black case is the favorite color (c) Assuming a woman is less than...
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