DiabetesPlasma-glucose levels are used to determine the presence of diabetes. Suppose the mean In(plasma-glucose) concentration (mg/dL) in 35- to 44-year-olds is 4.86 with standarddeviation = 0.64. A study of 100 sedentary people in this age group is planned to test whether they have a higher or lower level of plasma glucose than the general population.USE SALT(a) If the expected difference is 0.10 In units, then what is the power of such a study if a two-sided test is to be used with a = 0.05?0.0500(b) Answer (a) if the expected difference is 0.20 In units.0.496(c) How many people would need to be studied to have 80% power under the assumptions in (a)? (Round your answer up to the nearest whole number.)x398 Diabetes Plasma-glucose levels are used to determine the presence of dlabetes. Suppose the mean In (plasma - glucose) concentration (mg/dL) in 35 to 44-year-olds is 4.86 with standard deviation = 0.64. A study of 100 sedentarypeople in this age group is planned to test whether they have a higher or lower level of plasma glucose than the generalpopulation. (a) If the expected difference is 0.10 In units, then what is the power of such a study if a two-sided test is tobe used with α = 0.05? (b) Answer (a) if the expected difference is 0.20 In units. (c) How many people would need tobe studied to have 80% power under the assumptions in (a)? (Round your answer up to the nearest whole number.)DiabetesPlasma-glucose levels are used to determine the presence of diabetes. Suppose the mean In(plasma-glucose) concentration (mg/dL) in 35- to 44-year-olds is 4.86 with standarddeviation 0.64. A study of 100 sedentary people in this age group is planned to test whether they have a higher or lower level of plasma glucose than the general population.USE SALT(a) If the expected difference is 0.10 In units, then what is the power of such a study if a two-sided test is to be used with a 0.05?0.0500(b) Answer (a) if the expected difference is 0.20 In units.0.496(c) How many people would need to be studied to have 80% power under the assumptions in (a)? (Round your answer up to the nearest whole number.)x398

To calculate the sample size needed to achieve 80% power with an expected difference of 0.10 In…

Answered: (c) How many people would need to be…

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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Please answer question 3.2 3.3 and 3.4
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).…
6. Given that P(A) = 0.40, P(B) = 0.35, and P(AB) = 0.10, find; P(A) P(AUB) P(An B9) a. b. C.
Sean thinks that he has a special relationship with the number 6. In particular, Sean thinks that he would roll a 6 with a fair 6-sided die more often than you'd expect by chance alone. Suppose pis the true proportion of the time Sean will roll a 6. (a) State the null and alternative hypotheses for testing Sean's claim. (Type the symbol "p" for the population proportion, whichever symbols you need of "", "-", "not =" and express any values as a fraction e.g. p = 1/3) Ho= Ha (b) Now suppose Sean makes n = 30 rolls, and a 6 comes up 6 times out of the 30 rolls. Determine the P-value of the test, giving your answer to 4 decimal places. Please use 3 decimal places in your test statistic when finding the P-value. P-value = ⠀⠀ (c) Answer the question: Does this sample provide evidence at the 5 percent level that Sean rolls a 6 more often than you'd expect? (Type: Yes or No) 4
In a population of N = 10 scores, the smallest score is X= 8 and the largest score is X = 20. The range for the population is Selected Answer: a.12 Answers: a.12 b.cannot be determined without more information c.13 d.11
In this question, the real numbers in your answers should be given with three significant digits of accuracy after the decimal point. The public health authorities of a small town have divided the population into three categories: covid- negative, covid-positive, and hospitalised. After performing regular, extensive tests, they have observed that in each successive week: Among those who are negative, 95% remain so, 4% become positive, and 1% need to be hospitalised. • Among those who are positive, 75% recover and become negative, 20% stay positive, and 5% need to be hospitalised. Among those who are hospitalised, 60% recover and become negative, 30% are released from hospital but remain positive, and 10% remain hospitalised. (a) After representing the population in a given week as a column vector v = [n; p; h], where n, P, and h represent the number of people in the population who are negative, positive, and hospitalised respectively, write down a matrix M for which [n', p', h'] = M[n;…
Suppose P(A) = 0.59, P(B) = 0.28, and P(An B)= 0.01. What is P(Aª|B)? [Give your numeric response to at least 3 decimal places. Give only the number, and no extra characters or symbols.]
If S = {a, b, c} with P(a) = P(b) and P(c) = 0.36, find P(a).P(a) =
A recent study indicated that 24% of the 137 women over age 55 in the study were widows. Round up your answers to the next whole number for the following questions. How large a sample must you take to be 99% confident that the estimate is within 0.05 of the true proportion of women over age 55 who are widows? If no estimate of the sample proportion is available, how large should the sample be?

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