Calculus and Above

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8.27 If n = 400 and X = 25, construct a 99% confidence interval
8.27 If n = 400 and X = 25, construct a 99% confidence interval estimation for the population proportion. 8.37 If you want to be 95% confident of estimating the population proportion to within a sampl… read more
Ryan
Ryan
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1. (Chapter 7: Estimating a Population Proportion) A poll
Attachment: 2014-06-28_022745_work.docx 1. (Chapter 7: Estimating a Population Proportion) A poll sample of 500 people was conducted if they support new initiative. 200 people said yes. Find the margi… read more
Ryan
Ryan
Bachelor's Degree
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Use the given information to find the P-value. Also, use a
Use the given information to find the P-value. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis)… read more
Ryan
Ryan
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I need some statistic questions answered in the next hour and
I need some statistic questions answered in the next hour and 50 minutes. 1.Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2. Use the given sample sizes and … read more
Expert
Expert
1. Assume that the data has a normal distribution and the
1. Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. ALPHA = 0.05 for a left-tailed test. -… read more
Chirag
Chirag
Master's Degree
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Question 10 - A random sample of size n= 20 was drawn from
Question 10 - A random sample of size n= 20 was drawn from a population of size N= 200. The measurements shown in the table below were obtained. 38 24 49 24 29 22 52 25 40 51 26 40 26 38 51 40 48 41 4… read more
Chirag
Chirag
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Can you help with my Elementary Statistics Quiz? If so, you
Can you help with my Elementary Statistics Quiz? If so, you will have two hours to complete the quiz which consists of 25 questions. Topics that will be covered are: Linear Correlations Fundamentals o… read more
Stevewh
Stevewh
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I need help with homework questions. They are multiple choice
I need help with homework questions. They are multiple choice questions in intro to statistics and they have to be done today. They do not have to be perfect as you can redo the homework as many times… read more
Stevewh
Stevewh
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Bachelor's Degree
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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
Chirag
Chirag
Master's Degree
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Find the critical z value used to test a null hypothesis?
1. Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. Alpha = 0.09 for a right-tailed test. … read more
Sandhya_sharma
Sandhya_sharma
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2)Which of the following hypothesis tests use a z test statistic? A)
2)Which of the following hypothesis tests use a z test statistic? A) Matched Pairs B) Single Proportion C) Two Proportions D) Goodness-of-Fit E) Single Mean: σ Known F) Independence G) Two Variances H… read more
Ryan
Ryan
Bachelor's Degree
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Question 1 For a cluster sample, the estimates of the halves
Question 1 For a cluster sample, the estimates of the halves came in at 58.75 and 58.35. Find the Standard Error. Answer a. 0.30 b. 110.6 c. 0.15 d. 0.20 e. 110.9 Question 3 A utility company serves 5… read more
Chirag
Chirag
Master's Degree
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Hi Sandhya! Its me again, do you think you could help me
Hi Sandhya! It's me again, do you think you could help me with this homework? Deadline is 7 hours from now. Really need help! QUESTION 1 Before launching a new online service, a bank is interested in … read more
Sandhya_sharma
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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
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
Chirag
Master's Degree
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1. Lets assume that the age factor for the class was collected
1. Let's assume that the age factor for the class was collected from randomly selected students taking Elements of Statistics from college—even though we know the data was not truly randomly collected… read more
Stevewh
Stevewh
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Bachelor'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
SusanAthena
Master's Degree
Master's Degree
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1. Huamn beta-endorphin (HBE) is a hormone secreted by the
1. Huamn beta-endorphin (HBE) is a hormone secreted by the pituitary gland under conditions of stress. A researcher conducted a study to investigate whether a program of regular exercise might affect … read more
Math-John
Math-John
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