Calculus and Above

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A physician with a practice is currently serving 280
A physician with a practice is currently serving 280 patients. The physician would like to administer a survey to his patients to measure their satisfaction level with his practice. A random sample of… read more
Kofi
PhD in Statistics
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1. A random sample of 92 observers produced a mean X = 25.8
1. A random sample of 92 observers produced a mean X = 25.8 and a standard deviation s = 2.6. a) Find a 95% confidence interval for 11. b) Find the 90% confidence interval for Jl c) Find the 99% confi… read more
Ryan
Bachelor's Degree
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1) Given a level of confidence of 95% and a population standard
1) Given a level of confidence of 95% and a population standard deviation of 7, answer the following: (A) What other information is necessary to find the sample size (n)? (B) Find the Maximum Error of… read more
Sandhya_sharma
Master's Degree
Master's Degree
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1) Find the area under the standard normal curve: I. to
1) Find the area under the standard normal curve: I. to the right of z = -2.11 II. to the left of z = -2.11 2) Assume that the population of heights of female college students is approximately normall… read more
Math-John
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1.) Suppose we wish to estimate the mean of the property tax
1.) Suppose we wish to estimate the mean of the property tax on houses in a certain area from a sample of 32 houses. The point estimate of the the population of houses in the area is 8688.44 Assuming … read more
SusanAthena
Master's Degree
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For questions needing a probability table, please use the table
For questions needing a probability table, please use the table with the value that starts 0.5000 not software or another table. I am having trouble with these last 7 questions. Please show your work … read more
Scott
Master's Degree
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1. Consider a population with mean μ = 77.6 and(Standard Deviation)
1. Consider a population with mean μ = 77.6 and(Standard Deviation) σ = 5.63. (A) Calculate the z-score for x̅ = 76.1 from a sample of size 52. (B) Could this z-score be used in calculating probabilit… read more
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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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Pg.431 1)The mean of the sampling distribution of means is
Pg.431 1)The mean of the sampling distribution of means is equal to the mean of the population. T-F, and why or why not? 2) In the formula for the Confidence Interval for the Mean, if the Confidence C… read more
Ryan
Bachelor's Degree
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I. a. What percentage of the area of the standard normal distribution
I. a. What percentage of the area of the standard normal distribution is between z = -2.00 and z = +2.00? How do you know this? b. Find the following: P(z > 2.43) II. 1. A set of 50 data values has… read more
Chirag
Master's Degree
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1. A set of 50 data values has a mean of 44 and a variance
1. A set of 50 data values has a mean of 44 and a variance of 16. I. Find the standard score (z) for a data value = 51. II. Find the probability of a data value < 51. 2. Find the area under the sta… read more
Scott
Master's Degree
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16. In a survey of 630 males ages 18-64, 391 say they have
16. In a survey of 630 males ages 18-64, 391 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and com… read more
Sandhya_sharma
Master's Degree
Master's Degree
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A sample of 84 golfers showed that their average score on a
A sample of 84 golfers showed that their average score on a particular golf course was 89.05 with a standard deviation of 3.47. Answer each of the following - please show all work and state the final … read more
Chirag
Master's Degree
10,329 satisfied customers
(1) A researcher is interested in estimating the noise levels
(1) A researcher is interested in estimating the noise levels in decibels at area urban hospitals. She wants to be 98% confident that her estimate is correct. If the standard deviation is 5.06, how la… read more
Osbert12
Master's Degree
2,468 satisfied customers
Hello Greg, I have the following for today. I was careful
Hello Greg, I have the following for today. I was careful to copy the questions in their entirety this time. These need to be done by midnight, like usual. Thanks Greg:) 1. Consider a normal populatio… read more
Mr. Gregory White
Master's Degree
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Hi Greg, I have another assignment if you want it. Please
Hi Greg, I have another assignment if you want it. Please show the work. It's more intro statistics stuff. 1. A set of 50 data values has a mean of 30 and a variance of 4. I. Find the standard score (… read more
Mr. Gregory White
Master's Degree
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1.Assume that the weight loss for the first month of a diet
1.Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform distribution… read more
SusanAthena
Master's Degree
Master's Degree
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The diameters of grapefruits in a certain orchard are normally
The diameters of grapefruits in a certain orchard are normally distributed with a mean of 6.35 inches and a standard deviation of 0.55 inches. Show all work. (A) What percentage of the grapefruits in … read more
Mr. Gregory White
Master's Degree
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