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Suppose 58% of the doctors in America are dentists. If a
Suppose 58% of the doctors in America are dentists.If a random sample of size 425 is selected, what is the probability that the proportion of doctors who are dentists will be less than 63%? Round your… read more
R.R. Jha
R.R. Jha
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Suppose 58% of the doctors in America are dentists. If a
Suppose 58% of the doctors in America are dentists.If a random sample of size 577 is selected, what is the probability that the proportion of doctors who are dentists will be less than 54%? Round your… read more
R.R. Jha
R.R. Jha
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Bachelor's Degree
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Suppose the lengths of the pregnancies of a certain animal
Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 178 days and standard deviation sigma equals 17 days. Complete parts​ (a) through​… read more
Sandhya_sharma
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Master's Degree
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Ge An urn contains 9 black and 6 white. Five are randomly
geAn urn contains 9black and 6white balls. Five balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the p… read more
R.R. Jha
R.R. Jha
Bachelor's Degree
Bachelor's Degree
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The mean salary offered to students who are graduating from
The mean salary offered to students who are graduating from Coastal State University this year is $ 24,260, with a standard deviation of $ 3643. A random sample of 80Coastal State students graduating … read more
R.R. Jha
R.R. Jha
Bachelor's Degree
Bachelor's Degree
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The population mean annual salary for environmental
The population mean annual salary for environmental compliance specialists is about $63,500. A random sample of 40 specialists is drawn from this population. What is the probability that the mean sala… read more
R.R. Jha
R.R. Jha
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I have a prob I need help with. Do you want to own your own
Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises such as Candy Express, The Fudge Company, Karmel Corn, and Rocky Mountain Chocolate Factory. Startup costs (in thousands of dollars) for a random sample of candy stores are given below. Assume that the population of x values has an approximately normal distribution. 90 177 128 96 75 94 116 100 85 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean startup cost x and sample standard deviation s. (Round your answers to one decimal place.) x = thousand dollars s = thousand dollars(b) Find a 90% confidence interval for the population average startup costs μ for candy store franchises. (Round your answers to one decimal place.) lower limit thousand dollars upper limit thousand dollars … read more
Ryan
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Probability of mean salary of sample is less than $60,000?
The population mean annual salary for environmental compliance specialists is about $63,500. A random sample of 37 specialists is drawn from this population. What is the probability that the mean sala… read more
Osbert12
Osbert12
Master's Degree
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1.) A study of college football games shows that the number
1.) A study of college football games shows that the number of holding penalties assessed has a mean of 2.3 penalties per game and a standard deviation of 0.8 penalties per game. What is the probabili… read more
Chirag
Chirag
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Large companies typically collect volumes of data before designing
Large companies typically collect volumes of data before designing a product, not only to gain information as to whether the product should be released, but also to pinpoint which markets would be the… read more
Stevewh
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Hi I have 5 math questions - Here is the first question Question
Hi I have 5 math questions - Here is the first question Question #1 / 5 A college professor claims that the entering class this year appears to be smarter than entering classes from previous years. He… read more
Chirag
Chirag
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8. The life span of a battery is normally distributed, with
8. The life span of a battery is normally distributed, with a mean of 2300 hours and a standard deviation of 50 hours. What percent of batteries have a life span that is more than 2365 hours? What per… read more
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1) Suppose that the New England Colonials baseball team is
1) Suppose that the New England Colonials baseball team is equally likely to win any particular game as not to win it. Suppose also that we choose a random sample of 30 Colonials games. a) Estimate th… read more
Osbert12
Osbert12
Master's Degree
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Central limit theorem Sample mean A study of college football
Central limit theorem: Sample mean A study of college football games shows that the number of holding penalties assessed has a mean of 2.3 penalties per game and a standard deviation of 0.9 penalties … read more
R.R. Jha
R.R. Jha
Bachelor's Degree
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16. In a random sample of 520 judges, it was found that 282
16. In a random sample of 520 judges, it was found that 282 were introverts. Let p represent the proportion of all judges who are introverts. Find a 99% confidence interval for p. Give a brief interpr… read more
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1. The diameter of ball bearings produced in a manufacturing
1. The diameter of ball bearings produced in a manufacturing process can be explained using a uniform distribution over the interval 6.8 to 8.5 millimeters. The probability that a randomly selected ba… read more
Stevewh
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Central limit theorem Sample mean A study of college football
Central limit theorem: Sample mean A study of college football games shows that the number of holding penalties assessed has a mean of penalties per game and a standard deviation of penalties per game… read more
mhasan420
mhasan420
Master's Degree
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The mean salary offered to students who are graduating from
The mean salary offered to students who are graduating from Coastal State University this year is , with a standard deviation of . A random sample of Coastal State students graduating this year has be… read more
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Scott
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