Calculus and Above

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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
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A quality control expert at Glotech computers wants to test
A quality control expert at Glotech computers wants to test their new monitors. The production manager claims they have a mean life of 85 months with a variance of 64.If the claim is true, what is the… read more
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A quality control expert at LIFE batteries wants to test
A quality control expert at LIFE batteries wants to test their new batteries. The design engineer claims they have a standard deviation of 87 minutes with a mean life of 538 minutes.If the claim is tr… read more
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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
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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
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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
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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
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Sandhya_sharma
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The mean number of words per minute (WPM) typed by a speed
The mean number of words per minute (WPM) typed by a speed typist is 147 with a variance of 144.What is the probability that the sample mean would be greater than 150.2 WPM if 59 speed typists are ran… 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
Sandhya_sharma
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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Consider a t distribution with 14 degrees of freedom.
Consider a t distribution with 14degrees of freedom. Compute P < − 1.62 < t 1.62. Round your answer to at least three decimal places.Consider a t distribution with 11degrees of freedom. Find the… read more
R.R. Jha
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This is my Mid-term, and I have to get it finished by
Hello, This is my Mid-term, and I have to get it finished by 2am, are you available? if so, I have copied and pasted it below :). 1. A ________ displays the minimum, first quartile, median, third quar… read more
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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
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1. (TCO 8) For the following statement, write the null hypothesis
1. (TCO 8) For the following statement, write the null hypothesis and the alternative hypothesis. Also label which one is the claim. An automobile tire manufactory claims than their tires last more th… read more
Math-John
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TCO 6) Horse race time is found to be normally distributed
TCO 6) Horse race time is found to be normally distributed with a mean value of 10 minutes and a standard deviation of 2 minutes. Horses whose race time is in the top 5% will not be eligible to partic… read more
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Sample of 45 home theatre systems has a mean price of $129.00
3. You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider? If the conv… read more
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Find the mean for the given sample data. Unless indicated otherwise,
Find the mean for the given sample data. Unless indicated otherwise, round your answer to one more decimal place than is present in the original data values. The students in Hugh Logan's math class to… read more
Stevewh
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1.A coin operated drink machine was designed to discharge a
1.A coin operated drink machine was designed to discharge a mean of 8 ounces of coffee per cup. Suppose that we want to carry out a hypothesis test to see if the true mean discharge differs from 8. St… read more
Chirag
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