The data for a random sample of 8 paired observations areshown in the table to the right.b. Conduct the test identified in part a using a = 0.01.c. Find a 99% confidence interval for μg. Interpret thisresult.d. What assumptions are necessary to ensure the validityof this analysis?Pair1232345678Population 14116175040305632Population 24519185745316139b. Identify the rejection region for testing the hypotheses from part a. Select the correct choice below and fill in the answer box to complete your choice.(Round to three decimal places as needed.)OA. It>OB. t<OC. t>

PairPopulation 1Population 21414521619317184505754045630317566183239

Answered: The data for a random sample of 8…

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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Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 2 inches. The heights of 6 randomly selected students are 65, 75, 64, 65, 62 and 67. * = Ex: 12.34 Margin of error at 99% confidence level = Ex: 1.23 99% confidence interval = [Ex: 12.34 Ex: 12.34] [smaller value, larger value] Check 1 Next 2
*Please help me with this problem*A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 22 subjects had a mean wake time of 102.0 min. After treatment, the 22 subjects had a mean wake time of 72.2 min and a standard deviation of 21.2 min. Assume that the 22 sample values appear to be from a normally distributed population and construct a 99% confidence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of 102.0 min before the treatment? Does the drug appear to be effective? Construct the 99% confidence interval estimate of the mean wake time for a population with treatment. _min< muu < _min (round to one decimal place as needed)
A study of 420,071 cell phone users found that 136 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0321% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. %
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 2 inches. The heights of 9 randomly selected students are 66, 61, 75, 62, 61, 70, 65, 62 and 61. * = Ex: 12.34 Margin of error at 90% confidence level = Ex: 1.23 90% confidence interval = [Ex: 12.34 Ex: 12.34] [smaller value, larger value] Check Next 2
From random sample of 49 dates, the mean record high daily temperature in a certain city has a mean of 83.07 Fahrenheit. Assume the population standard deviation is 14.79 Fahrenheit. This creates a 95% confidence interval for the population mean of ( 78.93,87.21) Does it seem possible that the population mean could be less than 87 Fahrenheit? Explain
Use the given confidence interval to find the margin of error and the sample proportion. (0.743,0.769) Part 1 E= (Type an integer or a decimal.) P^= (Type an integer or a decimal.)
Q7)
Suppose 20 Pennsylvania high school cross-country runners participated in a 5 K race. The mean finish time was 1400 seconds (23 minutes, `20 seconds) with a standard deviation of 60 seconds. Assuming the 20 race times are representative of times for all experienced 5 K runners in this age group and 5 K race times are approximately normally distributed, find the LOWER bound of a 90% confidence interval for the 5 K race times for Pennsylvania high school cross-country runners. For your answer, round to whole seconds, (i.e. 1234), and only the lower bound is requested, (not the entire lower and upper interval).
esc 1 ! Determining whether two samples are independent or paired a... Worker A personal computer manufacturer is interested in comparing the mean assembly times for two keyboard assembly processes. To do this, the company selects 10 workers at random and asks each of them to use both assembly processes. The assembly time (in minutes) for Process 1 is recorded for each of these workers. Then, the assembly time for Process 2 is recorded for each of the same workers. The data and the differences (Process 1 minus Process 2) are shown in the table below. Process 1 Process 2 Difference (Process 1 - Process 2) Send data to calculator v Explanation 78.3 @2 1 2 69.5 Check 8.8 2 #3 44.5 48.5 3 79.3 20.2 4 76.5 38.0 83.0 5 46.2 $ X 4 6 48.9 07 dº % 57.8 (a) Are the two samples of assembly times independent or paired (dependent) samples? Choose the best answer. O independent samples O paired (dependent) samples 3 5 7 70.0 64.6 -4 2.8 -17.8 -36.8 -8.9 5.4 -39.3 -36.7-46.9 (b) The company wants to…
The confidence interval for a population porportion is (0.56, 0.72). What the the sample proportion and the margin of error. I p^= Margin of Error =
A study revealed that the average time for a university graduate to find a job was 7.4 months, with a standard deviation of 1.35 months. Determine a 90% confidence interval for the mean time to find a job if a sample of 64 graduates was surveyed. Show your work. ** Answer below or submit a file with your work **
In a simple random sample of 100 electronic components products by a certain method the mean lifetime was 125 hours. Assume that component lifetimes are normally distributed with population standard deviation =20 hours. Construct a 95% confidence interval for the mean battery life is

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