2. Having done poorly on their Math finals in June, eight students repeat thecourse insummer school and take another exam in August.June 54 49 68 66 58 60 62 62August 50 65 74 64 56 65 68 72If we consider these students to be representative of all students who might attend thissummer school in other years, do these results provide evidence that the program isworthwhile?(a) Set up the appropriate Ho and Ha.(b) Propose a formula to calculate the test statistic and report the result. (Assume thepopulation follow a normal distribution)(c) Find the P-value and make your conclusion at a = .05.

Sample data: June August 54 50 49 65 68 74 66 64 58 56 60 65 62 68 62 72

Answered: 2. Having done poorly on their Math…

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 of the following do you think could possibly be true statistically? A) A teacher brought 40 calculators to class, and 20% of them had dead batteries B) None of the other statements could be true C)The number of violent crimes in the city decreased by 112.46% last year D)Last year, 60 of the 80 residents in a neighborhood subscribed to the local newspaper, and this year, it is 40 residents who subscribe. This is a 50% decrease E) A company's annual profits increased by 110% over the last decade
Only the question 5 and 6 need to be resolved. Others have been reaolved already. Question: sample of 15, 10 years old children was taken to study whether watching television reduces the amount of physical exercise, causing weight gains. The number of kilograms each child was overweight by was recorded (a negative number indicates the child is underweight). In addition, the number of hours of television viewing per week was also recorded. These data are listed in the table below. Television(hours) 42 34 25 35 37 38 31 33 19 29 38 28 29 36 18 Overweight (Kg) 8 3 0 0 6 6 3 3 -4 4 4 2 1 6 -3 Use an appropriate plot to investigate the relationship between Television(hours) and Overweight (KG). Briefly explain the selection of each variable on the X and Y axes and why? Calculate and interpret the coefficient of correlation (r) between Television(hours) and Overweight (KG).…
I 21-34. What's the design? Read each brief report of statistical research, and identify a) whether it was an observational study or an experiment. If it was an observational study, identify (if possible) b) whether it was retrospective or prospective. c) the subjects studied and how they were selected. d) the parameter of interest. e) the nature and scope of the conclusion the study can reach. If it was an experiment, identify (if possible) b) the subjects studied. c) the factor(s) in the experiment and the number of levels for each. d) the number of treatments. e) the response variable measured. f) the design (completely randomized, blocked, or matched). g) whether it was blind (or double-blind). h) the nature and scope of the conclusion the experiment can reach. R3.5. Data were collected over a decade from 1021 men and women with a recent history of precancerous colon polyps. Participants were randomly assigned to receive folic acid (a B vitamin) or a placebo, and the study…
Question 26
3
4) Given a group of students at a local college who have been cross-classified as being a senior or not and a business major or not: Business Major Yes No Senior Yes 24 68 No 17 81 What is P(Senior) (Round your answer to three decimal places)?
Question 9, 8.2.19 Use the 2016 FICA tax rates, shown below, to answer the following question. If a taxpayer is not self-employed and earns $130,000, what are the taxpayer's FICA taxes? Matching Rates Paid by the Employer Employee's Rates 7.65% on first $118,500 of 7.65% on first $118,500 paid 15.3% on first $118,500 of net income Self-Employed Rates in wages profits 1.45% of income in excess of $118,500 1.45% of wages paid in excess of $118,500 2.9% of net profits in excess of $118,500 .. FICA taxes are $ (Type an integer or a decimal. Round to the nearest cent as needed.)

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