Calculus and Above

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The confidence interval for the difference between two
The confidence interval for the difference between two population means is to be undertaken. For this purpose a random sample of size 18 is taken from Population-1. The sample mean is found to be 5.7.… read more
Kofi
Mr
Ph.D.
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Sleep – College Students: Suppose you perform a study about
Sleep – College Students: Suppose you perform a study about the hours of sleep that college students get. You know that for all people, the average is about 7 hours. You randomly select 35 college stu… read more
Sandhya_sharma
Master's Degree
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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
Sandhya_sharma
Master's Degree
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Glenn Need Help w/ 6 Stats Problems Please 1. Why is a 99%
For Mr Glenn Need Help w/ 6 Stats Problems Please 1. Why is a 99% confidence interval wider than a 95% confidence interval? 2. A person claims to be able to predict the outcome of flipping a coin. Thi… read more
GLENN GILONGOS
Master of Mathematics
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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
Ryan
Bachelor's Degree
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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
akch2002
Master's Degree
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1. What is the primary reason for applying a finite population
1. What is the primary reason for applying a finite population correction coefficient? A. If you don't apply the correction coefficient, your confidence intervals will be too narrow, and thus overconf… read more
Stevewh
Teacher
Bachelor's Degree
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1.The lifetime of a particular component is normally distributed
1. The lifetime of a particular component is normally distributed with a mean of 1,000 hours anda standard deviation of 100 hours. Make the following calculations: a.) If a random sample of 9 componen… read more
Chirag
Master's Degree
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I Calculated The Sample Mean For 12 Randomly Selected High
I calculated the sample mean for 12 randomly selected high school seniors' test scores. The mean was 908.3 and the sample standard deviation was 305.4. Can you construct a 99% confidence interval for … read more
Stevewh
Teacher
Bachelor's Degree
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a random sample of four microwave ovens, the mean cost was
a random sample of four microwave ovens, the mean cost was &85.00 and the standard deviation was \$13.50. The 90% confidence interval for the population mean u is (_,_) (round to two decimal places as … read more
Math-John
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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
Chirag
Master'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
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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
Math-John
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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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Sample of 45 home theatre systems has a mean price of \$129.00
3. You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider? If the conv… read more
Ryan
Bachelor's Degree
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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=0.90, s=3.9, n=49 E=_________ (Round to three decimal places as needed) Construct the confidence interval for the population mean µ. C= … read more
Chirag
Master's Degree
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Hello Greg, I have more work if you want. 1. Consider a
Hello Greg, I have more work if you want. 1. Consider a population with and (A) Calculate the z-score for from a sample of size 14. (B) Could this z-score be used in calculating probabilities using Ta… read more
Mr. Gregory White
Master's Degree
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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