Homework Answers
Solution :
Degrees of freedom = df = 15
= 0.05
/ 2 = 0.05 / 2 = 0.025
Using t table,
t /2,df =
t0.025,15 = 2.131
t0.025,15 = 2.131
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Use Table A.3, Appendix A, to find the following Poisson
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(Round your answers to 4 decimal
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a. P(x = 5 | λ = 1.8) =
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=
Please show all work, I need help.
Find the following percentiles for the standard normal distribution. Interpolate where appropriate. (Round your answers to two decimal places.) (a) 91st (b) 9th (c) 75th (d) 25th (e) 10th You may need to use the appropriate table in the Appendix of Tables to answer this question
Use Table V in Appendix A to determine the t-percentile that is required to construct each of the following one-sided confidence intervals: (Express your answers to 3 decimal places.) Statistical Tables and Charts Part 1 Correct. Confidence level=95%, degrees of freedom=14 1.761 e Textbook and Media Attempts: 1 of 3 used Part 2 Correct. Confidence level=99%, degrees of freedom=19 2.539 e Textbook and Media Attempts: 1 of 3 used Part 3 Confidence level=99.9%, degrees of freedom=24
Please show all your work, write equations clearly, plug in
values properly, and comment on all steps.
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*Chapter 6, Section 1-CI, Exercise 011 Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best point estimate for p, the margin of error, and the confidence interval. Assume the results come from a random sample. A 99% confidence interval for p given that p = 0.36 and n = 500. Round your answer for the best point estimate to two decimal places, and your answers for the margin...
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Please circle all final answers and show
all work for each portion. ratings will be given for correct
answers! thank you so much in adVance!
Two suppliers manufacture a plastic gear used in a laser printer. The impact strength of these gears, measured in foot-pounds, is an important characteristic. A random sample of 10 gears from supplier 1 results in 1 = 289.30 and 51 = 22.5, and another random sample of 16 gears from the second supplier results in...
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Please explain /show steps thank you !
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