Calculus and Above

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A racing car consumes a mean of 86 gallons of gas per race
A racing car consumes a mean of 86 gallons of gas per race with a variance of 9.If 33 racing cars are randomly selected, what is the probability that the sample mean would be greater than 85.3 gallons… read more
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Thompson and Thompson is a steel bolts manufacturing
Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 125 millimeters, and a variance of 49.If a random sample of 41 steel bolts is selected, … read more
Sandhya_sharma
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A racing car consumes a mean of 86 gallons of gas per race
A racing car consumes a mean of 86 gallons of gas per race with a variance of 9.If 33 racing cars are randomly selected, what is the probability that the sample mean would be greater than 85.3 gallons… read more
Sandhya_sharma
Master's Degree
Master's Degree
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The mean per capita consumption of milk per year is 138
The mean per capita consumption of milk per year is 138 liters with a variance of 484.If a sample of 210 people is randomly selected, what is the probability that the sample mean would be less than 13… read more
Sandhya_sharma
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A racing car consumes a mean of 86 gallons of gas per race
A racing car consumes a mean of 86 gallons of gas per race with a standard deviation of 7 gallons.If 41 racing cars are randomly selected, what is the probability that the sample mean would be greater… read more
Sandhya_sharma
Master's Degree
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The mean per capita income is 16,127 dollars per annum with
The mean per capita income is 16,127 dollars per annum with a variance of 682,276.What is the probability that the sample mean would be less than 16219 dollars if a sample of 476 persons is randomly s… read more
Sandhya_sharma
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Master's Degree
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The mean per capita income is 16,127 dollars per annum with
The mean per capita income is 16,127 dollars per annum with a variance of 682,276.What is the probability that the sample mean would be less than 16219 dollars if a sample of 476 persons is randomly s… read more
Sandhya_sharma
Master's Degree
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An operation manager at an electronics company wants to test
An operation manager at an electronics company wants to test their amplifiers. The design engineer claims they have a mean output of 451 watts with a variance of 144.What is the probability that the m… read more
Sandhya_sharma
Master's Degree
Master's Degree
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Thompson and Thompson is a steel bolts manufacturing
Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 125 millimeters, and a variance of 49.If a random sample of 41 steel bolts is selected, … read more
Sandhya_sharma
Master's Degree
Master's Degree
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Thompson and Thompson is a steel bolts manufacturing
Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 143 millimeters, and a variance of 64.If a random sample of 32 steel bolts is selected, … read more
Sandhya_sharma
Master's Degree
Master's Degree
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Thompson and Thompson is a steel bolts manufacturing
Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 130 millimeters, and a variance of 64.If a random sample of 34 steel bolts is selected, … read more
Sandhya_sharma
Master's Degree
Master's Degree
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Thompson and Thompson is a steel bolts manufacturing
Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 135 millimeters, and a variance of 64.If a random sample of 46 steel bolts is selected, … read more
Sandhya_sharma
Master's Degree
Master's Degree
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The mean number of words per minute (WPM) read by sixth
The mean number of words per minute (WPM) read by sixth graders is 91with a variance of324 . If152 sixth graders are randomly selected, what is the probability that the sample mean would be greater th… read more
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I am really struggling with some of my economics stats
Hi! I am really struggling with some of my economics stats homework. Can you help me? Here is the question: A normal population has a mean of 60 and a standard deviation of 3. You select a sample of 3… read more
GLENN GILONGOS
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"For Guru2009 only" 1. A random sample of fifty-five 200-meter
"For Guru2009 only" 1. A random sample of fifty-five 200-meter swims has a mean time of 3.98 minutes and a standard deviation of 0.06 minutes. Construct a 905 confidence interval for the population me… read more
Chirag
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A researcher wishes to estimate, with 95% confidence, the proportion
A researcher wishes to estimate, with 95% confidence, the proportion of adults who have high-speed Internet access. Her estimate must be accurate within the 2% of the true proportion. a. Find the mini… read more
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A fish that the RV Langley catches very frequently is hogchoker
A fish that the RV Langley catches very frequently is hogchoker ( Trinectes maculatus ). Hogchokers were caught in 87% of the tows made in the summer of 2009. Based on this, calculate the probability … read more
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1.Assume that the weight loss for the first month of a diet
1.Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform distribution… read more
SusanAthena
Master's Degree
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