Fundamentals of Biostatistics
8th Edition
ISBN: 9781305268920
Author: Bernard Rosner
Publisher: Cengage Learning
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Chapter 5, Problem 130P
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Chapter 5 Solutions
Fundamentals of Biostatistics
Ch. 5.4 - What is the difference between a...Ch. 5.4 - Suppose a continuous random variable can only take...Ch. 5.4 - What is a standard normal distribution?Ch. 5.4 - (a) What is the area to the left of 0.2 under a...Ch. 5.4 - (a) What is z.30? What does it mean? (b) What is...Ch. 5.5 - What is the difference between a standard normal...Ch. 5.5 - What does the principle of standardization mean?Ch. 5.5 - Suppose the distribution of serum-cholesterol...Ch. 5.8 - Why do we use the normal approximation to the...Ch. 5.8 - Prob. C.2RE
Ch. 5.8 - The prevalence of glaucoma among the elderly in...Ch. 5.8 - The number of deaths from heart failure in a...Ch. 5 - Because serum cholesterol is related to age and...Ch. 5 - Because serum cholesterol is related to age and...Ch. 5 - Because serum cholesterol is related to age and...Ch. 5 - Because serum cholesterol is related to age and...Ch. 5 - Because serum cholesterol is related to age and...Ch. 5 - Suppose that total carbohydrate intake in 12- to...Ch. 5 - Suppose that total carbohydrate intake in 12- to...Ch. 5 - Suppose boys in this age range who live below the...Ch. 5 - Suppose boys in this age range who live below the...Ch. 5 - A study was conducted assessing the effect of...Ch. 5 - A study was conducted assessing the effect of...Ch. 5 - The duration of cigarette smoking has been linked...Ch. 5 - The duration of cigarette smoking has been linked...Ch. 5 - Serum cholesterol is an important risk factor for...Ch. 5 - Serum cholesterol is an important risk factor for...Ch. 5 - Serum cholesterol is an important risk factor for...Ch. 5 - People are classified as hypertensive if their...Ch. 5 - People are classified as hypertensive if their...Ch. 5 - People are classified as hypertensive if their...Ch. 5 - People are classified as hypertensive if their...Ch. 5 - Forced expiratory volume (FEV) is an index of...Ch. 5 - Forced expiratory volume (FEV) is an index of...Ch. 5 - Forced expiratory volume (FEV) is an index of...Ch. 5 - Forced expiratory volume (FEV) is an index of...Ch. 5 - The differential is a standard measurement made...Ch. 5 - The differential is a standard measurement made...Ch. 5 - The differential is a standard measurement made...Ch. 5 - The differential is a standard measurement made...Ch. 5 - The differential is a standard measurement made...Ch. 5 - The differential is a standard measurement made...Ch. 5 - Blood Chemistry In pharmacologic research a...Ch. 5 - Blood Chemistry In pharmacologic research a...Ch. 5 - Blood Chemistry In pharmacologic research a...Ch. 5 - In pharmacologic research a variety of clinical...Ch. 5 - Blood Chemistry In pharmacologic research a...Ch. 5 - A treatment trial is proposed to test the efficacy...Ch. 5 - A treatment trial is proposed to test the efficacy...Ch. 5 - A treatment trial is proposed to test the efficacy...Ch. 5 - Is the measure in Problem 5.38 a measure of...Ch. 5 - A treatment trial is proposed to test the efficacy...Ch. 5 - Refer to the pulmonary-function data in the Data...Ch. 5 - Prob. 43PCh. 5 - Refer to the pulmonary-function data in the Data...Ch. 5 - Prob. 45PCh. 5 - A clinical trial was conducted to test the...Ch. 5 - Well-known racial differences in blood pressure...Ch. 5 - Well-known racial differences in blood pressure...Ch. 5 - Prob. 49PCh. 5 - Suppose we observe 84 alcoholics with cirrhosis of...Ch. 5 - What is the probability of observing at least 29...Ch. 5 - Suppose we observe 84 alcoholics with cirrhosis of...Ch. 5 - FIGURE 5.22 Plasma-aldosterone concentrations in...Ch. 5 - FIGURE 5.22 Plasma-aldosterone concentrations in...Ch. 5 - Pregnant women with gestational diabetes mellitus...Ch. 5 - Officials in the State Health Department are...Ch. 5 - Prob. 57PCh. 5 - A study was conducted relating particulate air...Ch. 5 - Prob. 59PCh. 5 - Refer to Data Set VALID.DAT (at...Ch. 5 - Refer to Data Set VALID.DAT (at...Ch. 5 - Prob. 62PCh. 5 - A study concerned the risk of cancer among...Ch. 5 - Prob. 64PCh. 5 - A doctor diagnoses a patient as hypertensive and...Ch. 5 - A doctor diagnoses a patient as hypertensive and...Ch. 5 - Suppose the physician is not sure whether the...Ch. 5 - A study compared different treatments for...Ch. 5 - A study compared different treatments for...Ch. 5 - A study compared different treatments for...Ch. 5 - Obesity is an important determinant of...Ch. 5 - Prob. 72PCh. 5 - Prob. 73PCh. 5 - Prob. 74PCh. 5 - Prob. 75PCh. 5 - Prob. 76PCh. 5 - Answer the question in Problem 5.75 for a binomial...Ch. 5 - Prob. 78PCh. 5 - Prob. 79PCh. 5 - Prob. 81PCh. 5 - Prob. 82PCh. 5 - Prob. 83PCh. 5 - Prob. 85PCh. 5 - Retinitis pigmentosa (RP) is a genetic ocular...Ch. 5 - Prob. 87PCh. 5 - Prob. 88PCh. 5 - Prob. 89PCh. 5 - Physicians recommend that children with type-I...Ch. 5 - Physicians recommend that children with type-I...Ch. 5 - Prob. 92PCh. 5 - Prob. 93PCh. 5 - Prob. 94PCh. 5 - Prob. 95PCh. 5 - A previous study found that people consuming large...Ch. 5 - A previous study found that people consuming large...Ch. 5 - Prob. 98PCh. 5 - A study was recently published in Western...Ch. 5 - Prob. 100PCh. 5 - Prob. 101PCh. 5 - Prob. 102PCh. 5 - Prob. 103PCh. 5 - Prob. 104PCh. 5 - Prob. 105PCh. 5 - What is the 40th percentile of a normal...Ch. 5 - What is the sum of the 40th and 60th percentiles...Ch. 5 - What is z.90?Ch. 5 - A study was performed of different predictors of...Ch. 5 - A study was performed of different predictors of...Ch. 5 - Prob. 111PCh. 5 - Prob. 112PCh. 5 - Cancer The Shanghai Womens Health Study (SWHS) was...Ch. 5 - Prob. 114PCh. 5 - Prob. 115PCh. 5 - Prob. 116PCh. 5 - Prob. 117PCh. 5 - Prob. 118PCh. 5 - Prob. 119PCh. 5 - Prob. 120PCh. 5 - Prob. 121PCh. 5 - Prob. 122PCh. 5 - Prob. 123PCh. 5 - Prob. 124PCh. 5 - Hypertension Blood pressure readings are known to...Ch. 5 - Prob. 126PCh. 5 - Prob. 127PCh. 5 - Prob. 128PCh. 5 - Prob. 129PCh. 5 - Prob. 130P
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- A normal distribution has a mean of 50 and a standard deviation of 4. Solve the following three parts? 1. Compute the probability of a value between 44.0 and 55.0. (The question requires finding probability value between 44 and 55. Solve it in 3 steps. In the first step, use the above formula and x = 44, calculate probability value. In the second step repeat the first step with the only difference that x=55. In the third step, subtract the answer of the first part from the answer of the second part.) 2. Compute the probability of a value greater than 55.0. Use the same formula, x=55 and subtract the answer from 1. 3. Compute the probability of a value between 52.0 and 55.0. (The question requires finding probability value between 52 and 55. Solve it in 3 steps. In the first step, use the above formula and x = 52, calculate probability value. In the second step repeat the first step with the only difference that x=55. In the third step, subtract the answer of the first part from the…arrow_forwardIf a uniform distribution is defined over the interval from 6 to 10, then answer the followings: What is the mean of this uniform distribution? Show that the probability of any value between 6 and 10 is equal to 1.0 Find the probability of a value more than 7. Find the probability of a value between 7 and 9. The closing price of Schnur Sporting Goods Inc. common stock is uniformly distributed between $20 and $30 per share. What is the probability that the stock price will be: More than $27? Less than or equal to $24? The April rainfall in Flagstaff, Arizona, follows a uniform distribution between 0.5 and 3.00 inches. What is the mean amount of rainfall for the month? What is the probability of less than an inch of rain for the month? What is the probability of exactly 1.00 inch of rain? What is the probability of more than 1.50 inches of rain for the month? The best way to solve this problem is begin by a step by step creating a chart. Clearly mark the range, identifying the…arrow_forwardClient 1 Weight before diet (pounds) Weight after diet (pounds) 128 120 2 131 123 3 140 141 4 178 170 5 121 118 6 136 136 7 118 121 8 136 127arrow_forward
- Client 1 Weight before diet (pounds) Weight after diet (pounds) 128 120 2 131 123 3 140 141 4 178 170 5 121 118 6 136 136 7 118 121 8 136 127 a) Determine the mean change in patient weight from before to after the diet (after – before). What is the 95% confidence interval of this mean difference?arrow_forwardIn order to find probability, you can use this formula in Microsoft Excel: The best way to understand and solve these problems is by first drawing a bell curve and marking key points such as x, the mean, and the areas of interest. Once marked on the bell curve, figure out what calculations are needed to find the area of interest. =NORM.DIST(x, Mean, Standard Dev., TRUE). When the question mentions “greater than” you may have to subtract your answer from 1. When the question mentions “between (two values)”, you need to do separate calculation for both values and then subtract their results to get the answer. 1. Compute the probability of a value between 44.0 and 55.0. (The question requires finding probability value between 44 and 55. Solve it in 3 steps. In the first step, use the above formula and x = 44, calculate probability value. In the second step repeat the first step with the only difference that x=55. In the third step, subtract the answer of the first part from the…arrow_forwardIf a uniform distribution is defined over the interval from 6 to 10, then answer the followings: What is the mean of this uniform distribution? Show that the probability of any value between 6 and 10 is equal to 1.0 Find the probability of a value more than 7. Find the probability of a value between 7 and 9. The closing price of Schnur Sporting Goods Inc. common stock is uniformly distributed between $20 and $30 per share. What is the probability that the stock price will be: More than $27? Less than or equal to $24? The April rainfall in Flagstaff, Arizona, follows a uniform distribution between 0.5 and 3.00 inches. What is the mean amount of rainfall for the month? What is the probability of less than an inch of rain for the month? What is the probability of exactly 1.00 inch of rain? What is the probability of more than 1.50 inches of rain for the month? The best way to solve this problem is begin by creating a chart. Clearly mark the range, identifying the lower and upper…arrow_forward
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