Math Homework

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I appreciate your answers they clear up my miss-understanding and confirm what I understood. Thanks. Could you help me with these they are not due until 6/22/12. 1. Consider a normal population with µ… read more
Osbert12
Master's Degree
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1. Whenever the sampled population has a normal distribution,
1. Whenever the sampled population has a normal distribution, the sampling distribution of is a normal distribution for a. only large sample sizes b. only small sample sizes c. any sample size d. only… read more
Chirag
Master's Degree
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1. Consider a normal population with µ = 25 and σ = 7.0. (A)Calculate
1. Consider a normal population with µ = 25 and σ = 7.0. (A)Calculate the standard score for a value x of 27. (B)Calculate the standard score for a randomly selected sample of 45 with x=27. (C)Explain… read more
Stevewh
Teacher
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1. The New York State Lottery advertises that, for its instant
1. The New York State Lottery advertises that, for its instant lottery games, there is a 4 in 21 chance of winning. If you buy only one instant lottery card, what is the chance you will win? a. 4/21 b… read more
Stevewh
Teacher
Bachelor's Degree
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1. Consider a normal population with µ = 25 and σ = 7.0. (A)
1. Consider a normal population with µ = 25 and σ = 7.0. (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
Scott
Master's Degree
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1. Consider a normal population with 25 and 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 27. (B) Calculate the standard score for a randomly selected sample of 45 with = 27. (C) Expl… read more
Ryan
Bachelor's Degree
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1) A 98% confidence interval estimate for a population mean
1) A 98% confidence interval estimate for a population mean was computed to be (26.4, 47.8). Determine the mean of the sample, which was used to determine the interval estimate (show all work). 2) By … read more
dhouse1940
Retired
Master's Degree
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Assume that the mean SAT score in Mathematics for 11th graders
Assume that the mean SAT score in Mathematics for 11th graders across the nation is 500, and that the standard deviation is 100 points. Find the probability that the mean SAT score for a randomly sele… read more
Ryan
Bachelor's Degree
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1. Assume that the mean SAT score in Mathematics for 11th graders
1. Assume that the mean SAT score in Mathematics for 11th graders across the nation is 500, and that the standard deviation is 100 points. Find the probability that the mean SAT score for a randomly s… read more
Dr. Dan
Doctoral Degree
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1. Assume that the mean SAT score in Mathematics for 11th graders
1. Assume that the mean SAT score in Mathematics for 11th graders across the nation is 500, and that the standard deviation is 100 points. Find the probability that the mean SAT score for a randomly s… read more
SusanAthena
Master's Degree
Master's Degree
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1. Assume that the mean score on a certain aptitude test across
1. Assume that the mean score on a certain aptitude test across the nation is 100, and that the standard deviation is 20 points. Find the probability that the mean aptitude test score for a randomly s… read more
Stevewh
Teacher
Bachelor's Degree
6,427 satisfied customers
1. Assume that the mean SAT score in Mathematics for 11th graders
1. Assume that the mean SAT score in Mathematics for 11th graders across the nation is 500, and that the standard deviation is 100 points. Find the probability that the mean SAT score for a randomly s… read more
SusanAthena
Master's Degree
Master's Degree
41 satisfied customers
1. Consider a normal population with 25 and 7.0. (A)
1. Consider a normal population with µ = 25 and s = 7.0. (A) Calculate the standard score for a value x of 23. (B) Calculate the standard score for a randomly selected sample of 45 with = 23. (C) Expl… read more
mhasan420
Bachelor's Degree
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1. The diameter of ball bearings produced in a manufacturing
1. The diameter of ball bearings produced in a manufacturing process can be explained using a uniform distribution over the interval 6.8 to 8.5 millimeters. The probability that a randomly selected ba… read more
Stevewh
Teacher
Bachelor's Degree
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How many people would need to be in a sample of students in
How many people would need to be in a sample of students in order to have a 95% confidence interval 20 points wide around their entering SAT scores? A. 385 B. 480 C. 500 D. It is impossible to tell fr… read more
Scott
Master's Degree
20,253 satisfied customers
A study of the effects of a certain drug on people with GI
A study of the effects of a certain drug on people with GI problems reports N=1240. You happen to know the researchers used sampling without replacement. How many people participated in the study? A. … read more
Chirag
Master's Degree
10,329 satisfied customers
A standard IQ test has a mean of 98 and a standard deviation
A standard IQ test has a mean of 98 and a standard deviation of 16. We want to be 90% certain that we are within 8 IQ points of the true mean. Determine the sample size. An automobile safety engineer … read more
abozer
Bachelor's Degree
6,158 satisfied customers
1. Which of the following statements are true regarding the
1. Which of the following statements are true regarding the areas beneath any normal curve? (Points: 2) About 68.3% of the area is in the interval About 95.5% of the area is in the interval Nearly all… read more
R.R. Jha
Bachelor's Degree
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