Math Homework

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3.) Find the value of the test statistic z using Z= p-p/√pq/n The
3.) Find the value of the test statistic z using Z= p-p/√pq/n The claim is that the proportions of peas with yellow pods is equal to 0.25 (or 25%) the sample statistics from one experiment includes 47… read more
Chirag
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1). Assume that a random sample is used to estimate a population
1). Assume that a random sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. 98% confidence, the sample size… 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. In the formula for the Confidence Interval for the Mean,
1. In the formula for the Confidence Interval for the Mean, what symbol(s) represents the Maximum Error of Estimate? 2. If a population has a standard deviation σ of 18.2 units, what is the standard e… read more
Scott
Master's Degree
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A simple random sample of size n is drawn from a population
A simple random sample of size n is drawn from a population whose population standard deviation is known to be 5.7. The sample mean is determined to be 41.9. Use this information to answer the followi… read more
Scott
Master's Degree
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In your own words, describe the relationship between the following: b.
In your own words, describe the relationship between the following: b. Sample size, sample standard deviation, and standard error… read more
Chirag
Master's Degree
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If the standard deviation is \$400 and it has a confidence level
If the standard deviation is \$400 and it has a confidence level of 98% which will be plus or minus \$25, how many cardholders should be sampled?… read more
SusanAthena
Master's Degree
Master's Degree
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A random sample of size n is to be drawn from a population
A random sample of size n is to be drawn from a population with a mean =500 and sd= 100. What sample size would be necessary to ensure a standard error of 25?… read more
Scott
Master's Degree
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Hi, can anyone help me with this question A simple random
Hi, can anyone help me with this question? A simple random sample is to be drawn from a population of 1200. To have 90% confidence that the sampling error in estimating p is no more than 0.03, what sa… read more
Ryan
Bachelor's Degree
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A consumer advocacy group is doing a large study on car rental
A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like to estimate the mean monthly mileage, µ, of cars rented in the U.S. over the… read more
Chirag
Master's Degree
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In a normal distribution with mu 25 and sigma 9, what number
In a normal distribution with mu = 25 and sigma = 9, what number corresponds to z = -2? Let's assume you have taken 100 samples of size 64 each from a normally distributed population. Calculate the st… read more
Scott
Master's Degree
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Given a level of confidence of 95% and a population standard
Given a level of confidence of 95% and a population standard deviation of 8, what other information is necessary: (a) To find the Maximum Error of Estimate (E)? (b) To find the sample size (n)? (c) Gi… read more
mcleo19
Assistant Professor
Doctoral 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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A population has 7 and a 7 and sd 9.6. A sample of size n 64
A population has 7 and a µ=7 and sd=9.6. A sample of size n=64 is drawn. The standard error of the mean is... .… read more
abozer
Bachelor's Degree
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What is the standard of error of the mean for samples of size
What is the standard of error of the mean for samples of size 100 taken from a population whose standard deviation is 3.78? A. 0.378 B. 3.78 C. 37.8 D. 378 The population of all those who took the SAT… read more
Scott
Master'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 6.5 to 8.5 millimeters. What is the probability that a randomly sele… read more
Stevewh
Teacher
Bachelor's Degree
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For Scott A consumer agency has retained an independent
For "Scott" A consumer agency has retained an independent testing firm to examine a television manufacturer's claim that its 25-inch console model consumes just 110 watts of electricity. Based on a pr… read more
Scott
Master's Degree
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Given a level of confidence of 95% and a population SD of 7,
Given a level of confidence of 95% and a population SD of 7, what other information is necessary? (a)To find the maximum error of estimate(E)? (b)To find the sample size (n)? (c)Given the above confid… read more
Stevewh
Teacher
Bachelor's Degree
6,427 satisfied customers
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