a Find the missing information from the following:Group I50Group IIGroup II?CombinedNumberStandard Deviation906.72001137-746Mean115116desh Univ. B. Com 199&.

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Answered: é 6-43. Find the missing information…

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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G m1 chip - Google Search É 13-inch MacBook Pro - Space .austincc.edu/webapps/assessment/take/launch.jsp?course_assessment_id=_756751_1&course_id=_846.. Question Completion Status: QUESTION 4 Is the following an observational study or an experiment? Take a random sample of people at a fitness center. Ask them if they use resistance bands or not. Compare the average muscle mass for those who do and those who do not use resistance bands. O Observational Study O Experiment QUESTION 5
The Graduate Record Examination (GRE) is a test required for admission to many U.S. graduate schools. The comapny adiminsters the test with a reported mean quantitative reasoning score of 152.5 and a standard deviation of 9. A) what is the range of scores of the 25th percentile to the 75th percentile. B) If the mechanical engineering department requires an applicant to be in the 80th percentile or above, what is the minimum score. C) if an applicant scores a 170 on the test, What percentage of applicants did she score better on than?
1. Give an examle of a paired date set 2. Why is the chi-square distribution always positive?
5. Calculate the exact sample mean and the approximate standard deviation, rounded to the nearest hundredth or two decimal places, for the following lengths of bolts, in millimetres. Show all work, use proper notation and provide a therefore statement.
6) Suppose you had the following body temperature readings, all in °F: (Don't forget to answer the questions in parts (d) and (e)). 96.21 97.65 97.39 97.97 97.28 99.43 a) calculate the mean, variance and standard deviation. b) now convert these readings to °C (us biologists like the metric system, after all). To convert, remember that °C = °F/1.8 - 32/1.8. For example, to convert the first reading you would do: 96.21/1.8 - 32/1.8 = 53.43 - 17.78 = 35.67. c) now calculate the mean, variance and standard deviation of the converted data. d) take the mean you calculated in (a) and convert this to Celsius using the same formula you used in (b). Are you surprised by the results? Why or why not? e) take the standard deviation from (a) and divide it by 1.8. Can you explain the results? Why didn't you have to subtract 32/1.8? Watch your math in this step!
Table 1 Demographics, disease characteristics and BMI of all patients, and for men and women separately. Variable (scale) Total (n =184) Men (n = 108) Women (n =76) Age in years Diagnosis, n (%) Schizophrenia and otherwise psychotic 57.4 (12,8) 56.5 (12.1) 58.9 (13.6) 0.20 0.72 142 (77.2) 82 (75.9) 60 (78.9) Personality disorder 17 (9.2) 12 (11.1) 5 (6.6) Mood disorder Depressive Bipolar Others 6. (3.3) 3 (2.8) 3 (3.9) 7 (3.8) 5 (4.6) 2 (2.6) 12 (6.5) 6. (5.6) 6 (7.9) Years of hospitalisation" Severity of illness (scale 1-6) Body Mass Index (BMI) (13.2) (1.39) (5.4) 10.7 (10.7) (1.26) 13.0 (12.3) (1.36) 14.8 0.02 4.67 4.51 4.89 0.06 27.8 (6.2) 27.7 28.8 (7.0) 0.05 Medication, n (%) Antipsychotics First generation Second generation Both 0.55 36 (19.6) 21 (19.4) 15 (19.7) 70 (38.0) 45 (41.7) (37.0) 25 (32.9) (43.4) (39.7) (44.6) 73 40 33 Antidepressants 82 46 (42.6) 36 (47.4) 0.52 Mean (SD) unless otherwise noted. Note. significant p-values (p < 0.05) are bold. " Substance-related…
11. In order to estimate the mean amount of time computer users spend on the internet 10 each month, how many computer users must be surveyed in order to be 95% confident that your sample mean is within 11 minutes of the population mean? Assume that the standard deviation of the population of monthly time spent on the internet is 201 min. The minimum sample size required is computer users. What is a major obstacle to getting a good estimate of the population mean? O A. There may not be 1,283 computer users to survey. O B. It is difficult to precisely measure the amount of time spent on the internet, invalidating some data values. O C. The data does not provide information on what the computer users did while on the internet. O D. There are no obstacles to getting a good estimate of the population mean.
1. A group of 500 volunteers recorded an average age of 21.5 years and standard deviation of 9.6 years. Assumed the distribution is normally distributed. d) If 2.5% of the volunteers are older than Shirley how old is she? e) Between what ages is the middle 40% of the volunteers?
8
3. An energy company wants to choose between two regions in a state to install energy-producing wind turbines. A researcher claims that the wind speed in Region A is less than the wind speed in Region B. To test the regions, the average wind speed is calculated for 90 days in each region. The mean wind speed in Region A is 13.8 miles per hour. Assume the population standard deviation is 2.9 miles per hour. The mean wind speed in Region B is 15.1 miles per hour. Assume the population standard deviation is 3.3 miles per hour. At α=0.05, can the company support the researcher's claim? Complete parts (a) through (d) below. (a) Identify the claim and state H0 and Ha. What is the claim? A. The wind speed in Region A is not greater than the wind speed in Region B. B. The wind speed in Region A is less than the wind speed in Region B. C. The wind speed in Region A is not less than the wind speed in Region B. D. The wind speed in Region A is the…

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é 6-43. Find the missing information from the following: Group I 50 Group II Group III Combined Number 90 200 Standard Deviation 113 7-746 Mean 115 116 lesh Univ. BCom 199&.