Calculus and Above

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From a sample of size 25, the sample mean is found to be 26.
From a sample of size 25, the sample mean is found to be 26. It is known that the variable of interest is approximately normally distributed with variance of 36. Using this data the 95% confidence int… read more
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A New York charity recently did a fund raising campaign to
A New York charity recently did a fund raising campaign to support libraries. The following table gives the number of people who gave money at each fundraising level based on what region of the state … read more
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A simple random sample of size n is drawn. The sample​ mean,
A simple random sample of size n is drawn. The sample​ mean, x overbar​, is found to be 18.2​, and the sample standard​ deviation, s, is found to be 4.9.​(a) Construct a 95​% confidence interval about… read more
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Salmon Weights: Assume that the weights of spawning Chinook
Salmon Weights: Assume that the weights of spawning Chinook salmon in the Columbia river are normally distributed. You randomly catch and weigh 18 such salmon. The mean weight from your sample is 22.2… read more
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Method 1: Use the Student's t distribution with d.f. = n −
Method 1: Use the Student's t distribution with d.f. = n − 1.Method 2: When n ≥ 30, use the sample standard deviation s as an estimate for σ, and then use the standard normal distribution.Consider a r… read more
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Question 2.2. Which of the following distributions is most
Question 2.2. Which of the following distributions is most likely to approach a normal distribution? (Points : 1) distribution of all possible sample means of sample size 90 distribution of all possib… read more
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Question 1 Assume that the weight loss first month
Question 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 dis… read more
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Chapter 6 00. The average rent in a city is $1,570 per month
Chapter 6 00. The average rent in a city is $1,570 per month with a standard deviation of $200. Assume rent follows the normal distribution. Use the empirical rule to answer the following questions. a… read more
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FOR MR. WHITE b. Interpret the interval in terms of this application.
FOR MR. WHITE b. Interpret the interval in terms of this application. Choose the correct answer below: A. The water department can be 90% confident that the mean lead level of drinking water for all r… read more
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FOR GURU2009 ONLY: Assignment number 1: Needed right now! 1. In
FOR GURU2009 ONLY: Assignment number 1: Needed right now! 1. In the standard normal distribution, the standard deviation is always: 2. The area under the standard normal curve is: 3. If Mary gets a 90… read more
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Please help with these 17 questions!! 1. Find the margin of
Please help with these 17 questions!! 1. Find the margin of error for the given values of c,s,and n. c=0.90,s=2.9,n=100 2. Construct the confidence interval for the population mean u. c=0.98,x=8.4,s=0… read more
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1) Which of the following measures of central location is affected
1) Which of the following measures of central location is affected most by extreme values? A. Mean B. Median C. Mode D. Geometric mean 2) Which level of measurement is required for the median? A. Nomi… 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
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Find the margin of error for the given values of c, s, and
Find the margin of error for the given values of c, s, and n. C=0.95, s=2.3, n=49 E=_________ (Round to three decimal places as needed) Construct the confidence interval for the population mean µ. C= … read more
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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
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Below are 12 questions. I have provided the possible answers
Below are 12 questions. I have provided the possible answers for the questions. I only need the correct answers. You can just mark the right answer and send this back to me. Also, for some of the ques… read more
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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
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SusanAthena
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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
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