Calculus and Above

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Suppose x has a distribution with a mean of 80 and a
Suppose x has a distribution with a mean of 80 and a standard deviation of 9. Random samples of size n = 36 are drawn. (a) Describe the x bar distribution. x bar has a normal distribution. x bar has a… read more
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The heights of fully grown trees of a specific species are
The heights of fully grown trees of a specific species are normally​ distributed, with a mean of 64.0 feet and a standard deviation of 5.00 feet. Random samples of size 18 are drawn from the populatio… read more
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Random samples of size 36 each are taken from a large
Random samples of size 36 each are taken from a large population whose mean is 120 and standard deviation is 39. The standard error of the sampling distribution of sample mean is:… read more
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Suppose x has a distribution with a mean of 80 and a
Suppose x has a distribution with a mean of 80 and a standard deviation of 51. Random samples of size n = 36 are drawn. … read more
Ashleigh T
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Fill in the to correctly complete the sentence below.
Fill in the blanks to correctly complete the sentence below. Suppose a simple random sample of size n is drawn from a large population with mean mu and standard deviation sigma. The sampling distribut… read more
Tom
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A simple random sample of size 33 is obtained from a
A simple random sample of size 33 is obtained from a population with mu equals 76 and sigma equals6 For parts​ (a) and​ (b), on your​ paper, answer the questions u sng complete sentences.​(a) Does the… read more
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Bachelor's Degree
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Let x represent the dollar amount spent on supermarket
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a certain article, the mean of the x distribution is about \$22 and the esti… read more
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The amounts of time employees at a large corporation work
The amounts of time employees at a large corporation work each day are normally​ distributed, with a mean of 7.5 hours and a standard deviation of 0.37 hour. Random samples of size 25 and 38 are drawn… read more
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The amounts of time employees at a large corporation work
The amounts of time employees at a large corporation work each day are normally distributed, with a mean of 7.7 hours and a standard deviation of 0.32 hour. Random samples of size 25 and 36 are drawn … read more
GLENN GILONGOS
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The amounts of time employees at a large corporation work
The amounts of time employees at a large corporation work each day are normally distributed, with a mean of 7.7 hours and a standard deviation of 0.32 hour. Random samples of size 25 and 36 are drawn … read more
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Master of Mathematics
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The amounts of time employees at a large corporation work
The amounts of time employees at a large corporation work each day are normally​ distributed, with a mean of 7.77 hours and a standard deviation of 0.37 hour. Random samples of size 22 and 34 are draw… read more
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2. The mean diameter of a ball bearing produced by a certain
2. The mean diameter of a ball bearing produced by a certain manufacturer is 0.80 cm with a population standard deviation of 0.03 cm. A sample of 36 ball bearings is randomly selected from a productio… read more
Stevewh
Bachelor's Degree
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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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The amount of time employees at a large corporation work
The amount of time employees at a large corporation work each day are normally distributed, with a mean of 7.8 hours and a standard deviation of 0.38 hour. Random samples of 24 and 36 are drawn from t… read more
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1) Consider a normal population with µ = 25 and σ = 8.0. (A)
1) Consider a normal population with µ = 25 and σ = 8.0. (A) Calculate the standard score for a value x of 22. (B) Calculate the standard score for a randomly selected sample of 30 with = 22. (C) Expl… read more
Stevewh
Bachelor's Degree
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2)Which of the following hypothesis tests use a z test statistic? A)
2)Which of the following hypothesis tests use a z test statistic? A) Matched Pairs B) Single Proportion C) Two Proportions D) Goodness-of-Fit E) Single Mean: σ Known F) Independence G) Two Variances H… read more
Ryan
Bachelor's Degree
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My scenario: A researcher is interested in the height, weight,
My scenario: A researcher is interested in the height, weight, and TV-watching habits of 10 year old children. Suppose that the weights of all 10 year olds in the United States are normally distribute… read more
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Master's Degree
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1. A population is normally distributed, with a mean of 23.45
A population is normally distributed, with a mean of 23.45 and a standard deviation of 3.8. What is the probability of each of the following: Taking a sample size of ten and obtaining a sample mean of… read more
statwaves
Doctoral Degree
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