44 people who own a car in Arizona are randomly selected by an insurance company. The...
44 people who own a car in Arizona are randomly selected by an insurance company. The number of miles the car is driven during the year is recorded. The summary statistics are: mi, s = 4,672. Construct a 97 percent confidence interval for the mean, μ, amount of miles each car in Oregon is driven. List the margin of error.
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44 people who own a car in Arizona are randomly selected by an
insurance company. The...
44 people who own a car in California are randomly selected by an insurance company. The...
44 people who own a car in California are randomly selected by an insurance company. The number of miles the car is driven during the year is recorded. The summary statistics are: x̅ = 13,961 miles, s = 4,672. Construct a 97 percent confidence interval for the mean, μ, amount of miles each car in California is driven. List the margin of error
1) When 327 college students are randomly selected and surveyed, it is found that 121 own...
1) When 327 college students are randomly selected and surveyed, it is found that 121 own a car. Construct and interpret a 99% confidence interval for the percentage of all college students who own a car. Be sure to check the conditions.
A statistics student at a New York State community college, randomly samples 900 students who own...
A statistics student at a New York State community college, randomly samples 900 students who own cell phones to determine if they play games on their phones. 75% stated that they use their mobile phones to play games. Using this information, then: construct a 90% confidence interval (to 4 decimal places) for the population proportion, p, of NYS community college cell phone users who play games on their phones. construct a 99% confidence interval (to 4 decimal places) for the...
Here are summary statistics or randomly selected weights of newborn girls
Here are summary statistics or randomly selected weights of newborn girls: n-186, x-265 hg.-68g Construct a confidence interval estimate of the mean, Use a 99% confidence level Are these results very different from the confidence interval 24.6 hg < μ 27.6 hg with only 19 sample values x = 26.1 hg and s=2.3 hg? What is the confidence interval for the population mean μ? (Round to one decimal place as needed)
When 308 college students are randomly selected and surveyed , it is found that 129 own...
When 308 college students are randomly selected and surveyed , it is found that 129 own a car . Find a 95% confidence interval for the true proportion of all college students who own a car.
When 308 college students are randomly selected and surveyed , it is found that 129 own...
When 308 college students are randomly selected and surveyed , it is found that 129 own a car . Find a 95% confidence interval for the true proportion of all college students who own a car.
17 randomly selected cars are driven for a tank and is found that the sample mean fuel consumption is 9.4 l/100k with a...
17 randomly selected cars are driven for a tank and is found that the sample mean fuel consumption is 9.4 l/100k with a sample standard deviation of s = .437. suppose the manufactuer wishes to construct a confidence interval for mu the true mean fuel consumption for the model under these consitions what is the margin of error of a 95% confidence interval for mu what is the margin of error of a 90% confidence interval for mu
when 294 college students are randomly selected and surveyed, it is found that 130 own a...
when 294 college students are randomly selected and surveyed, it is found that 130 own a car. Find a 90% confidence interval for the proportion of all college students who own a car. Show all work!!
1. An auto company wanted to know the percentage of people who prefer to own safer...
1. An auto company wanted to know the percentage of people who prefer to own safer cars (that is, cars that possess more safety features) even if they have to pay a few thousand dollars more. A random sample of 500 people showed that 320 of them will not mind paying a few thousand dollars more to have safer cars. Construct a 90% confidence interval for the percentage of people who will not mind paying a few thousand dollars more...
Here are summary statistics for randomly selected weights of newborn girls: n=263, x overbar =35.1hg, s=8.38.3...
Here are summary statistics for randomly selected weights of newborn girls: n=263, x overbar =35.1hg, s=8.38.3 hg. Construct a confidence interval estimate of the mean. Use a 96% confidence level. Are these results very different from the confidence interval 33.0 hg < μ < 35.8 hg with only 24 sample values, x overbar= 34.4 hg, and s=3.23.2 hg? What is the confidence interval for the population mean μ? Are the results between the two confidence intervals very different?
1) When 327 college students are randomly selected and surveyed, it is found that 121 own a car. Construct and interpret a 99% confidence interval for the percentage of all college students who own a car. Be sure to check the conditions.
Here are summary statistics or randomly selected weights of newborn girls: n-186, x-265 hg.-68g Construct a confidence interval estimate of the mean, Use a 99% confidence level Are these results very different from the confidence interval 24.6 hg < μ 27.6 hg with only 19 sample values x = 26.1 hg and s=2.3 hg? What is the confidence interval for the population mean μ? (Round to one decimal place as needed)
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