Pre-Calculus

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Determine the point estimate of the population mean and
Determine the point estimate of the population mean and margin of error for the confidence interval.Lower bound is 17​, upper bound is 25.The point estimate of the population mean is _The margin of er… read more
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SAT scores are distributed with a mean of 1,500 and a
SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested in estimating the average SAT score of first year students at your college. If you would like to lim… read more
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Platelet Counts of Women 95% confidence; n​=29 s=65.6 Use
Platelet Counts of Women 95% confidence; n​=29 s=65.6 Use the given information to find the number of degrees of​ freedom, the critical values X2/L X 2/R and the confidence interval estimate of popula… read more
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In a test of the effectiveness of garlic for lowering​
In a test of the effectiveness of garlic for lowering​ cholesterol, 47 people were treated with garlic processed tablet form. Cholesterol levels were measured before and after the treatment. The chang… 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 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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For his PhD project, on a randomly selected day in May, Ali
For his PhD project, on a randomly selected day in May, Ali Cem samples 250 observations, from a population that is assumed to be normal, with a sample mean of 23 and a population standard deviation o… read more
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For his PhD project, on a randomly selected day in May, Ali
For his PhD project, on a randomly selected day in May, Ali Cem samples 250 observations, from a population that is assumed to be normal, with a sample mean of 23 and a population standard deviation o… read more
Sandhya
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You intend to estimate a population mean with a confidence
You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 20 to find the critical value that corresponds to a c… read more
Kofi
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1. (5 pts) A researcher wants to estimate, at 92% confidence
1. (5 pts) A researcher wants to estimate, at 92% confidence level, the proportion of Covid-19 symptomatic patients that have diabetes. The researcher wants estimate to be within three percentage poin… read more
R.R. Jha
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Question 1 of 40 2.5 Points The distribution of .A. degrees
Question 1 of 40 2.5 Points The distribution of B.A. degrees conferred by a local college is listed below, by major. Major Frequency English 2073 Mathematics 2164 Chemistry 318 Physics 856 Liberal Art… read more
Ryan
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I am looking at a set of questions you answered 9 months
Hi Ryan, I am looking at a set of questions you answered 9 months ago. How can I get those answers. ***** ***** … read more
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I see where you have already answered a homework assignment the same as this. Please let me know what the charge will be to get the answers. Questions 1 to 20: Select the best answer to each question.… read more
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18. Assume that a sample is used to estimate a population mean
18. Assume that a sample is used to estimate a population mean mu. Use the given confidence level and sample data to find the margin of error. Assume that the sample is a simple random sample and the … read more
Chirag
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"For John Only " Hi John.. I noticed you have answered
"For John Only " Hi John.. I noticed you have answered similiar questions to the ones I would like for you to help me with. Hopefully you will be able to. 1. The commissioner of the state police is re… read more
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Please not that a proper conclusion specific to the problem
Please not that a proper conclusion specific to the problem at hand must be provided for each answer. (Example: If a question asks, what is the probability of selecting a worker at random and finding … read more
Trigeoscal
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What is the mean annual snowfall during 49 randomly picked years?
Solve the problem. The amount of snowfall falling in a certain mountain range is normally distributed with a mean of 94 inches, and a standard deviation of 14 inches. What is the probability that the … read more
Chirag
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A confidence interval estimate for the population mean is given
A confidence interval estimate for the population mean is given to be (39.50, 47.85). If the standard deviation is 13.639 and the sample size is 41, answer each of the following (show all work): (A) D… read more
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1. By measuring the amount of time it takes a component of
1. By measuring the amount of time it takes a component of a product to move from one workstation to the next, an engineer has estimated that the standard deviation is 3.86 seconds. Answer each of the… read more
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