Homework Answers
Ans a) probability ( drug or placebo) = 220/300 = .733
Ans b) probability (improve or not improve) = 300/300 = 1
Ans c) probability (drug or improve) = (120 + 45 + 31)/300 = .653
Ans d) probability (drug and improve) = 65/300 = .217
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4. An allergy drug was tested by giving 120 people the drug and 100 people a placebo. A control group consisted of...
An allergy drug is tested by gving 130 people the drug and 100 people a placebo...
An allergy drug is tested by gving 130 people the drug and 100 people a placebo A control group consists of 70 people who were given no treatment The nuber of people in each group who showed inproveent ap table BE Cick the icon to view the table a.What is the probability that a randomly selected person in the shudy was given elther the drug or the placebo The probability is Round to the nearest thousandth as needed) Enter your...
4) As part of pharmaceutical testing for drowsiness as a side effect of a drug, 200...
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Problem 4 Suppose 100 hypertensive people are given an antihypertensive drug and the drug is effective...
Problem 4 Suppose 100 hypertensive people are given an antihypertensive drug and the drug is effective in 20 of them. By effective, we mean their DBP is lowered by at least 10 mm Hg as judged from a repeat blood-pressure measurement 1 month after taking the drug by 10 mm Hg after 1 month. 1. What is the best point estimate of the probability p of the drug being effective? 2. Suppose we know that 10% of all hypertensive patients...
A group of 200 people on the waitlists for surgery were classified by type of surgery...
A group of 200 people on the waitlists for surgery were classified by type of surgery and gender as shown. Type of Surgery Eye Cardiac Orthopedic Other Male 48 Y 37 2 120 Female 35 y 22 b 80 83 10 59 18 200 a. If one person is selected randomly from this group, what is the probability that the person is a i. Female or requires eye surgery? (1 mark) ii. Male requiring orthopedic surgery? (1 mark) iii. Female,...
PROBLEM # PAGE1 Forty percent of a group of people are female and sixty democrats and...
PROBLEM # PAGE1 Forty percent of a group of people are female and sixty democrats and 48% of males are democrats. A person is randomly selected from the group. (A) [10 points) What is the probability that the selected person is a democrat? (B) (10 points] If the person selected is found to be a democrat, what is the probability that this person is male? (C) (10 points) What is the probability that the person selected is a female democrat?...
#58 d 4 members of the Green lected from the group, find ependent or a Green....
#58
d 4 members of the Green lected from the group, find ependent or a Green. 4 Years High College 4 Years High School (Less than College School Only 4 years) (or More) Total ind the probability of rolling Male than 5. 20 23 82 Female Total 14 15 29 han 4. 45 174 card from a 52-card deck. Source: U.S. Census Bureau Find the probability, expressed as a simplified fraction, thata randomly selected American, age 25 or over 41....
2) Populations versus samples. For each statement, answer with either population, sample, or both. A) The compl...
2) Populations versus samples. For each statement, answer with either population, sample, or both. A) The complete set of information. B) A portion, not all, of the information. C) Has the potential to be biased or misleading. D) Measured or summarized with parameters. E) Measured or summarized with statistics. 3) Descriptive versus inferential statistics. For each statement, answer with either descriptive or inferential statistics. A) Facts about samples. B) Educated guesses about populations based on samples. C) The world population...
TEST 1: ANSWERS INTS EACH). This section takes around 5 minutes. Name Spring 2019 8) A researcher wants to determine whether female teachers give higher or lower grades, on average, then male t...
TEST 1: ANSWERS INTS EACH). This section takes around 5 minutes. Name Spring 2019 8) A researcher wants to determine whether female teachers give higher or lower grades, on average, then male teachers. She picks a random sample by picking a random sample of schools, in the schools picked, picking a random sample of departments, and in the departments picked, picking a random sample of teachers. What kind of sampling was performed? d) voluntary response e) cluster b) stratified Random...
Clinical trials are usually conducted in phases that build on one another. Each phase is designed...
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A Waist is a Terrible Thing to Mind: The waist circumference of males 20 to 29...
A Waist is a Terrible Thing to Mind: The waist circumference of males 20 to 29 years ele is approximately normally distributed, with mean 92.5 cm and standard deviation 13.5 Source: M.A. McDowell. CD. Fryar.R. Hirs for Children and Adults: U.S. Population. 1999-2002. Advance data from vital and health statistics: No. 361. Hyattsville, MD: National Center for Health Statistics, 2005. d CL. Ogden, Anthropometric Reference Data 5. Draw a normal curve with the parameters labeled. 92.5 What proportion of 20-...
An allergy drug is tested by gving 130 people the drug and 100 people a placebo A control group consists of 70 people who were given no treatment The nuber of people in each group who showed inproveent ap table BE Cick the icon to view the table a.What is the probability that a randomly selected person in the shudy was given elther the drug or the placebo The probability is Round to the nearest thousandth as needed) Enter your...
4) As part of pharmaceutical testing for drowsiness as a side effect of a drug, 200 patients are randomly assigned to one of two groups of 100 each. One group is given the actual drug and the other a placebo. The number of people who felt drowsy in the next hour is recorded as Drowsy Not drowsy Drug 40 60 Placebo 20 80 a. What is the probability that a randomly picked patient in the study feels drowsy in the...
Problem 4 Suppose 100 hypertensive people are given an antihypertensive drug and the drug is effective in 20 of them. By effective, we mean their DBP is lowered by at least 10 mm Hg as judged from a repeat blood-pressure measurement 1 month after taking the drug by 10 mm Hg after 1 month. 1. What is the best point estimate of the probability p of the drug being effective? 2. Suppose we know that 10% of all hypertensive patients...
A group of 200 people on the waitlists for surgery were classified by type of surgery and gender as shown. Type of Surgery Eye Cardiac Orthopedic Other Male 48 Y 37 2 120 Female 35 y 22 b 80 83 10 59 18 200 a. If one person is selected randomly from this group, what is the probability that the person is a i. Female or requires eye surgery? (1 mark) ii. Male requiring orthopedic surgery? (1 mark) iii. Female,...
PROBLEM # PAGE1 Forty percent of a group of people are female and sixty democrats and 48% of males are democrats. A person is randomly selected from the group. (A) [10 points) What is the probability that the selected person is a democrat? (B) (10 points] If the person selected is found to be a democrat, what is the probability that this person is male? (C) (10 points) What is the probability that the person selected is a female democrat?...
#58
d 4 members of the Green lected from the group, find ependent or a Green. 4 Years High College 4 Years High School (Less than College School Only 4 years) (or More) Total ind the probability of rolling Male than 5. 20 23 82 Female Total 14 15 29 han 4. 45 174 card from a 52-card deck. Source: U.S. Census Bureau Find the probability, expressed as a simplified fraction, thata randomly selected American, age 25 or over 41....
2) Populations versus samples. For each statement, answer with either population, sample, or both. A) The complete set of information. B) A portion, not all, of the information. C) Has the potential to be biased or misleading. D) Measured or summarized with parameters. E) Measured or summarized with statistics. 3) Descriptive versus inferential statistics. For each statement, answer with either descriptive or inferential statistics. A) Facts about samples. B) Educated guesses about populations based on samples. C) The world population...
TEST 1: ANSWERS INTS EACH). This section takes around 5 minutes. Name Spring 2019 8) A researcher wants to determine whether female teachers give higher or lower grades, on average, then male teachers. She picks a random sample by picking a random sample of schools, in the schools picked, picking a random sample of departments, and in the departments picked, picking a random sample of teachers. What kind of sampling was performed? d) voluntary response e) cluster b) stratified Random...
A Waist is a Terrible Thing to Mind: The waist circumference of males 20 to 29 years ele is approximately normally distributed, with mean 92.5 cm and standard deviation 13.5 Source: M.A. McDowell. CD. Fryar.R. Hirs for Children and Adults: U.S. Population. 1999-2002. Advance data from vital and health statistics: No. 361. Hyattsville, MD: National Center for Health Statistics, 2005. d CL. Ogden, Anthropometric Reference Data 5. Draw a normal curve with the parameters labeled. 92.5 What proportion of 20-...
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