Calculus and Above

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1 point) The length, X, of a fish from a particular mountain
1 point) The length, X, of a fish from a particular mountain lake in Idaho is normally distributed with μ=8.7 inches and σ=1.7 inches.(a) Is X a discrete or continuous random variable? (Type: DISCRETE… read more
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1. On the average, there are 500 mg of aspirin in an “Extra
1. On the average, there are 500 mg of aspirin in an “Extra Strength” aspirin tablet. Suppose the random variable assigning amount of aspirin in a tablet is normally distributed with standard deviatio… read more
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1. Find the indicated z score. The graph depicts the
1. Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. The indicated z score is? (Round to two decimal places as needed.) 2. Assume tha… read more
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ATTENTION RYAN:STASTIC HOMEWORK1. The amount of Jen's
Attachment: 2015-05-12_195353_exam_4_stastic.docx ATTENTION RYAN: STASTIC HOMEWORK 1. The amount of Jen's monthly electric bill is normally distributed with a mean of \$160 and a standard deviation of … read more
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Question 1 of 20 5.0 Points The lifetimes of light bulbs of
Question 1 of 20 5.0 Points The lifetimes of light bulbs of a particular type are normally distributed with a mean of 270 hours and a standard deviation of 11 hours. What percentage of the bulbs has l… read more
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Find the standardized variable Z if X has Mean 48 and standard
Find the standardized variable Z if X has Mean 48 and standard deviation 9. Your answer: Z = (X - ) / Open Show Work Find the standardized variable Z if X has Mean 157 and variance 36. Your answer: Z … read more
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The monthly incomes for 12 randomly selected people
13.) The monthly incomes for 12 randomly selected people, each with bachelor's degree in economics, are shown on the right: 4450.77 4596.43 4366.21 4455.62 4151.34 3727.06 4283.99 4527.57 4407.44 3946… read more
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A sample of 120 U.S. households has a mean computer usage time
A sample of 120 U.S. households has a mean computer usage time of 19.2 hours per week with a sample standard deviation of 3.3 hours. Find a 99% confidence interval for the mean computer usage time of … read more
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Hello StatisticalExpert I have a Binomial distribution question: The
Hello StatisticalExpert I have a Binomial distribution question: The probability of an event occurring in each of a series of independent trials is. Find the distribution function of the number of occ… read more
Trigeoscal
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Let x be a random variable representing the length of a Atlantic
Let x be a random variable representing the length of a Atlantic croaker in controlled lake. A friend claims that the average length of trout caught in this lake is 19 inches. To test this claim we fi… read more
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1) Given a binomial distribution with n = 29 and p = 0.83,
1) Given a binomial distribution with n = 29 and p = 0.83, would the normal distribution provide a reasonable approximation? Why or why not? 2) Find the value of z such that approximately 8.32% of the… read more
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In a normal distribution, what is the z score: a. above which
In a normal distribution, what is the z score: a. above which the top 5% of cases fall? b. above which the top 1% of cases fall? c. below which the bottom 5% of the cases fall? d. below which the bott… read more
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Homework Questions Pt. 1!!Short answer questions:1. Identify
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1) A set of 50 data values has a mean of 27 and a variance
1) A set of 50 data values has a mean of 27 and a variance of 16. I. Find the standard score (z) for a data value = 19. II. Find the probability of a data value < 19. 2) Find the area under the sta… read more
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Helllo my question for Business statistics is The area under
Helllo my question for Business statistics is The area under the normal curve between z = 0 and z = 1 is ___ the area under the normal curve between z = 1 and z = 2 The choices are 1) less than 2) gre… read more
SusanAthena
Master's Degree
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Hi Greg, got another one. Could you do this one by midnight
Hi Greg, got another one. Could you do this one by midnight tonight? If so then here it is. Again, intro statistics. Thanks Greg! 1. If the random variable z is the standard normal score and a > 0,… read more
Mr. Gregory White
Master's Degree
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A researcher predicts that listening to music while solving
A researcher predicts that listening to music while solving math problems will make a particular brain area more active. To test this, a research participant has her brain scanned while listening to m… read more
SusanAthena
Master's Degree
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Stats Questions,1. Assume a sample has been selected at
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