Using the browser's print will lead to an undesirable print-out. Use the Print item from the "Question Help" menu to get abetter print-out Cell phone bill (3)85.25 58.6780.0060.00144.430.0074.8545.02100.34 103.6887.12 168.79 186.05 70.00 42.2370.25 54.89 67.04 80.13 29.91134.75 182.00 49.96 64.96 199.8330.04 98.7989.57165.4381.0093.00 14.99 103.2760.2520.03153.35 150.04 205.52 98.23432.5055.17249.50110.0955.26 19.93150.00 100.36 45.16 170.4536.01100.37 34.9350.0069.81101.00150.04 78.70 60.0379.36163.630.00 60.00200.2910.03130.27145.83 89.30 135.55 110.44149.8666.00 109.38 30.01 55.16 113.3252.81 83.14 32.11 51.00149.8750.10 80.08 67.53 50.2024.9570.33 52.70 180.6750.02 100.48150.16 103.420.0074.69107.00106.86 78.91 29.87 99.58 371.89 The results of a question asked in a simple random survey are reported in the accompanying table. The question asked was "If you own a cell phone, what was your cell phone bill lastmonth? Express answers to the penny." Use the data to complete parts (a) through (d) below.Click the icon to view the table of cell phone bills.(d) Construct and interpret a 90% confidence interval for the mean cost of a monthly cell phone bill. Select the correct choice below and fill in the answer boxes within your choice.(Round to two decimal places as needed. Use ascending order.)O A. There is a 90% probability that the mean monthly cell phone bill is between $and $OB. We are 90% confident the mean monthly cell phone bill is between $ and $

Confidence interval is an interval such that the probability of the unknown parameter to be included…

Answered: The results of a question asked in a…

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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Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=964 and x = 540 who said "yes." Use a 95% confidence level.
You are a researcher studying a certain species of fish in a local lake. You gather a random sample of 19 fish of this species and record the lengths (in centimeters) of the fish. The data is displayed in the table below. Estimate the mean length of all fish of this type in the lake. Use a 99% confidence level. 9.1 9 8.6 5.8 9.8 7.4 9.1 9.5 8.2 8.9 9.3 7.8 9 9.6 10.4 13.6 7.2 10.1 8.9 a) Find the confidence interval: b) What is the margin of error of your interval? c) Interpret your 99% confidence interval in context
If actual period demand varies from the forecast by more than 3MAD, this indicates: there is 3% chance that the forecast is wrong. there is a 98% chance that the forecast is wrong. there is a 97% chance that the forecast is wrong. there is a 3% chance that the forecast is correct Moving to the next question prevents changes to this answer:
Find the confidence level and α for an 80% confidence interval.
Report an appropriate hypothesis test for a positive linear relationship and use a 5% significance level. Explain the potential error in words, in context. In the answer options below I have used the phrase “a certain relationship” because I don’t want to give away exactly what type of relationship it is. Group of answer choices We would be accepting that there was a certain relationship between Sale amount and Tip when actually there wasn’t. We would not be accepting that there was a certain relationship between Sale amount and Tip when indeed there wasn’t. We would not be accepting that there was a certain relationship between Sale amount and Tip when actually there was. We would be accepting that there was a certain relationship between Sale amount and Tip when indeed there was.
A survey was conducted that asked 1013 people how many books they had read in the past year. Results indicated that x=10.3 books and s=16.6books. Construct a 90% confidence interval for the mean number of books people read. Interpret the interval. Construct a 90% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to two decimal places as needed.) A. There is a 90% probability that the true mean number of books read is between ___ and ____ B. There is 90% confidence that the population mean number of books read is between ___ and ____. C. If repeated samples are taken, 90% of them will have a sample mean between ___ and ___.
when computing descriptive statistics, we are interested only both describing our data and also in presenting the means and standard deviations of all dependent variables. True or false When writing your participant section, you include all measures of central tendency (mean, median, mode) and all measures of variablility (variance, range, standard deviation). True or false
form a confidence interval for mean, proportion, and standard deviation.
You are a researcher studying the antler size of male Alaskan Moose in a certain Alaska location. You gather a random sample of 18 male moose and record the width (in feet) of the antlers. The data is displayed in the table below. Estimate the mean antler width of all Alaskan male moose in this area. Use a 90% confidence level. 3.6 5.6 3.4 3.4 4 5.2 4.6 4.3 4.6 4.6 2.2 6.4 3.6 3.1 5.4 4.4 3.3 4.3 a) Find the confidence interval: < μμ < b) What is the margin of error of your interval? c) Interpret your 90% confidence interval in context.
A statistician changes her level of significance from .001 to .05. What impact will this change have on her risk of making a Type I and Type II error? Is the change in the level of significance a good decision? Why or why not?
A survey was conducted that asked 963 people how many books they had read in the past year. Results indicated that x=14.7 books and s=17.8 books. Construct a 90% confidence interval for the mean number of books people read. Interpret the interval.Construct a 90% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice.(Use ascending order. Round to two decimal places as needed.)A. If repeated samples are taken, 90% of them will have a sample mean between ___ and ____ B. There is a 90% probability that the true mean number of books read is between ____ and ___ C. There is a 90% confidence that the population mean number of books read is between ___ and ___

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