**Select all that apply concerning a confidence interval:**- [ ] considers variations from sample to sample- [ ] based on observations from a single sample- [ ] has practical use when determining whether to accept or reject a product or service- [ ] its point estimate is the lower range

From the above data The correct option are Consider variations from sample to sample Has practical…

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Which calculator function should be used to construct a confidence interval estimate for a population proportion? O a. TInterval O b. ZInterval O c. 1-PropZInt
Use the sample data and confidence level given below to complete parts (a) through (d). A drug is used to help prevent blood clots in certain patients. In clinical trials, among 4321patients treated with the drug, 148 developed the adverse reaction of nausea. Construct a 95% confidence interval for the proportion of adverse reactions. a) Find the best point estimate of the population proportion p. ______________ (Round to three decimal) b. identify the value of the margin of error E E=______________ c. construct the confidence interval _____<p<________ d. write a statement that correctly interprets the confidence interval.
Assuming that the population is normally distributed, construct a 95% confidence interval for the population mean, based on the following sample size of n = 8. 1, 2, 3, 4, 5, 6, 7, and 19 e In the given data, replace the value 19 with 8 and recalculate the confidence interval. Using these results, describe the effect of an outlier (that is, an extreme value) on the confidence interval, in general. Find a 95% confidence interval for the population mean, using the formula or technology. OSusO (Round to two decimal places as needed.)
Assuming that the population is normally distributed, construct a 95% confidence interval for the population mean for each of the samples below. Explain why these two samples produce different confidence intervals even though they have the same mean and range. Sample A: 1 2 4 4 5 5 7 8 Full data set Sample B: 1 2 3 4 5 6 7 8 Question content area bottom Part 1 Construct a 95% confidence interval for the population mean for sample A. enter your response here≤μ≤enter your response here
0.56 ppm is the maximum authorized concentration of phosphate in drinking water. Given below is the analysis of various samples of bottled water from the same batch of production. Is there an outlier present in the data set at 95% confidence interval? What is the t-tab and t-calc for the data set? Can the water be used for drinking? Use outlier tests Sample Phosphate (ppm) 1 0.26 2 0.46 3 0.41 4 0.49 5 0.38
Review the work below for calculating a confidence interval for a sample mean. Redo the work and confirm that it is correct, or correct it and note the errors. What is the final margin of error E? What is the final confidence interval? Offer an example of a population mean that would fit into the confidence interval. Offer an example of a population mean that would be outside of the confidence interval.
core: 0 of 1 pt 12 of 12 (8 complete) ▼ HW Score: 66 67%, 8 of 12 8.5.49-T Question Help ▼ Suppose a hospital would like to estimate the proportion of patients who feel that physicians who care for them always communicated effectively when discussing their medical care A pilot sample of 40 patients bund that 18 reported that their physician communicated effectively. Determine the additional number of patients that need to be sampled to construct a 95% confidence interval with a margin of eror equal to 5% to estimate this proportion The additional number of patients that need to be sampled is (Round up to the nearest integer.) Enter your answer in the answer box and then click Check Answer. All parts showing Clear A P Type here to search T0M AM 4771/0621 DELL Esc F2 F3 F4 F5 F6 F7 FB F9 Priscr F10 F11 F12 sert Delese 4. %23 ¥- +] 2 3 7. 8. Backspace T. Tab Y Caps Lock H. Enter P.
A real estate agent wants to know if tax assessors and real estate appraisers closely agree on the values of homes. A random sample of the two independent groups evaluated 12 homes. The data is given below. Tax Assessors Real Estate Appraisers x̄1 = $102,344 x̄2 = $105,827 s1 = $3,952 s2 = $4,341 n1 = 12 n2 = 12 Construct a confidence interval for the mean difference in the home values for each group. A real estate agent wants to know if tax assessors and real estate appraisers closely agree on the values of homes. A random sample of the two independent groups evaluated 12 homes. The data is given below. Tax Assessors Real Estate Appraisers x̄1 = $102,344 x̄2 = $105,827 s1 = $3,952 s2 = $4,341 n1 = 12 n2 = 12 Construct a confidence interval for the mean difference in the home values for each group. (-6999, 33.302) (-6998, 31.516) (-8264, 1297.8) (-6804, -161.5)
also, what is the lower and upper limits ?
Construct a 90% confidence interval to estimate the population mean using the data below. What assumptions need to be made about this population? X̄=37 s=9.1 n=25 **Round to two decimal places as needed.**

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Select all that apply concerning a confidence interval: O considers variations from sample to sample based on observations from a single sample O has practical use when determining whether to accept or reject a product or service Oits point estimate is the lower range