cesRequired InformationHow much noisier are streets where cars travel faster? An article reports noise levels in decibels and average speed inkilometers per hour for a sample of roads. The following table presents the results.Speed28.26Noise78.136.2279.638.7381.029.0778.730.2878.630.2578.229.0333.1778.479.6Can you conclude that the mean noise level for streets whose average speed is 30 kilometers per hour is greater than 78 decibels?Perform a hypothesis test and report the P-value.Since 0.001

The data on speed and noise levels is given…

Answered: Required Information How much noisier…

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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A researcher collects data showing average time spent (in minutes) at the grocery self-checkout lane at a particular store. Using a statistical software, create a histogram and generate descriptive statistics for the average time spent by the 40 individuals that is shown below. Attach the software output to your assignment. 1.3 1.4 1.5 1.9 2.0 2.0 2.1 2.1 2.1 2.1 2.4 2.6 2.8 3.1 3.1 3.1 3.2 3.3 3.5 3.9 4.0 4.1 4.2 4.2 4.2 4.5 4.6 4.6 4.7 5.0 5.1 5.2 5.3 5.5 5.9 6.1 6.5 7.2 7.9 8.6
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The Focus Problem at the beginning of this chapter asks you to use a sign test with a 1% level of significance to test the claim that the overall temperature distribution of Madison, Wisconsin, is different (either way) from that of Juneau, Alaska. The monthly average data (in °F) are as follows. Month Jan. Feb. March April May June Madison 17.4 21.3 31.7 46.8 57.3 67.7 Juneau 22.3 27.2 31.7 38.6 46.1 52.9 Month July Aug. Sept. Oct. Nov. Dec. Madison 71.5 69.6 60.1 51.8 35.8 22.6 Juneau 55.1 54.8 49.1 41.3 32.7 26.8 (a) What is the level of significance? (b) Compute the sample test statistic. (Use 2 decimal places.) (c) Find the P-value of the sample test statistic. (Use 4 decimal places.)
A Click Submit to complete this assessment. >< < Question 25 of 25 Question 25 1 points Save Answer TODAY Moms and Parenting.com surveyed 6,000 parents to determine how much money they were willing to spend on gifts for each one of their children during the holiday season. The following frequency distribution represents the results of the survey: Classes ($ amount) 1 100 101 200 201 - 300 |Frequency 1134 1458 750 468 501 and above 588 301 - 400 401 500 Determine the missing frequency for the second class 937 1524 1602 1000 Click Submit to complete this assessment. < Question 25 of 25 15 158 19,815 FEB 24 280 O000
Next question A nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40. Use the histogram to answer the question. The blood pressure readings were given to the nearest whole number. Relative Frequency Approximately what percentage of the people aged 25-40 had a systolic blood pressure reading between 110 and 139 0.35 inclusive? 0.30 0.25 0.20 O A. 89% 0.15 0.10 B. 39% 0.05 C. 59% 0.00 100 110 120 130 140 150 160 D. 74% Systolic Blood Pressure (mm Hg)
Question 3 Mean = Determine the mean, median, and mode of following data set: 106.2 84.7 110.6 105.8 91.6 99.5 102.3 128.1 128.1 128.1 Median = Round your answers to the nearest hundredth as needed.
Strictly homework not quiz
Researchers studying anthropometry collected body girth measurements and skeletal diameter measurements, as well as age, weight, height and gender, for 507 physically active individuals. Use the table to answer the questions. Min 147.2 Q1 164.3 Median 171.3 Mean 172.5 SD 8.7 Q3 178.1 Max 198.1 a) What is the point estimate for the average height of active individuals? ______________ cmb) What is the median height of these active individuals? ______________ cmc) What is the point estimate for standard deviation of heights of active individuals? ____________ cmd) The IQR extends from ______________ cm to ______________ cm, giving an IQR of ______________ cm.e) Is a person who is 1m 90cm (190cm) tall considered unusually tall? And is a person who is 1m 50cm (150cm) considered unusually short? __No, they are not unusual since these heights are within two standard deviations of the mean __No people can come in all sizes, we cannot define usual…
The Department of Motor Vehicles office tried a new customer service system after people complained they were wasting too much time waiting in line. Use the two relative frequency histograms to answer the following questions. Waiting Times at the DMV (OLD SYSTEM) Waiting Times at the DMV (NEW SYSTEM) 50 8 40- 8 Percent 8 10 0 0 5 10 15 20 Time Waited OLD (in minutes) 8% 60% 50% 25 30 Percent 50 40 8 O 10 0 0 T 20 15 Time Waited (in minutes) 5 10 25 30 About what percent of customers waited fewer than 10 minutes under the old system?
Safari File Edit View History Bookmarks Window Help Sun 10:16 A myopenmath.com МyOpenMath b Answered: What is a point estimate for the... | bartleby b Answered: An engineer wishes to determine the... | bartleby Suppose you are a researcher in a hospital. You are experimenting with a new tranqunizer. You collEtt data from a random sample of 11 patients. The period of effectiveness of the tranquilizer for each patient (in hours) is as follows: Hours 3 3 2.9 2.5 2.5 3 2.7 2.4 2.7 3 3 What is a point estimate for the population mean length of time. (Round answer to 2 decimal places) 2.79 What must be true in order to construct a confidence interval in this situation? The population must be approximately normal Construct a 90% confidence interval for the population mean length of time. (Round upper and lower bounds to 2 decimal places.) What does it mean to be "90% confident" in this problem? There is a 90% chance that the confidence interval contains the sample mean time. The confidence…
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Exhibit 13-31 To test whether or not there is a difference between treatments A, B, C and D, a sample of 12 observations has been randomly assigned to the four treatments. You are given the results below. Treatment A B 2 C D 1.872 46.33 15.44 Observation 36 30 26 30 26 25 33 Refer to Exhibit 13-31. The mean square between treatments (MSTR) equals 20 28 28 22 34 28

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