The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters perkilogram, ml/kg). The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that thedistribution is approximately normal.(a) What is the probability that an elite athlete has a maximum oxygen uptake of at least 75 ml/kg?answer.(b) What is the probability that an elite athlete has a maximum oxygen uptake of 50 ml/kg or lower?answer%3D(c) Consider someone with a maximum oxygen uptake of 40 ml/kg. Is it likely that this person is an elite athlete? Write "YES" or "NO."answer.Calculate your z-scores to at least 3 decimal places when finding the probability, to insure that rounding is not an issue.

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Answered: The physical fitness of an athlete is…

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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The systolic blood pressure (given in millimeters) of males has an approximately normal distribution with mean u = 125 and standard deviation o = 12. (a) Calculate the z-scores for the male systolic blood pressures 110 and 140 millimeters. (Round your answers to two decimal places.) 110 mm z = 140 mm z = (b) If a male friend of yours said he thought his systolic blood pressure was 2.5 standard deviations below the mean, but that he believed his blood pressure was between 110 and 140 millimeters, what would you say to him? (Enter your numerical answer to the nearest whole number.) He is ---Select--- because 2.5 standard deviations below the mean would give him a blood pressure reading of millimeters, which is ---Select--- the range of 110 to 140 millimeters.
Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random sample of 50 male firefighters are tested and that they have a plasma volume sample mean of x = 37.5 ml/kg (milliliters plasma per kilogram body weight). Assume that ? = 7.20 ml/kg for the distribution of blood plasma.
Measuring lung function: One of the measurements used to determine the health of a person's lungs is the amount of air a person can exhale under force in one second. This is called forced expiratory volume in one second, and is abbreviated FEV1. Assume the mean FEV1 for 10 -year-old boys is 2.1 liters and that the population standard deviation is =σ0.4 . A random sample of 35 10 -year-old boys who live in a community with high levels of ozone pollution are found to have a sample mean FEV1 of 1.98 liters. Can you conclude that the mean FEV1 in the high-pollution community differs from 2.1 liters? Use the =α0.10 level of significance and the P -value method with the TI-84 calculator. Part: 0 / 4 0 of 4 Parts Complete Part 1 of 4 State the appropriate null and alternate hypotheses. :H0 :H1 This hypothesis test is a ▼(Choose one) test.
In the experiment, you repeated measurements 13 times for a resistor. After data processing, you determined that the standard deviation of the measurements is 4.3 N. What is the standard error of the mean in unit of N?
A distribution is given as X ~ U(0, 12). What is the theoretical standard deviation? (Round your answer to two decimal places.)
Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 156 adult males, the mean pulse rate is 70.2 bpm and the standard deviation is 11.1 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)
Hemoglobin levels in 11-year-old boys vary according to a normal distribution with σ=1.2 g/dL. How large a sample is needed to estimate µ with 95% confidence so the margin of error is no greater than 0.5 g/dL?
Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 137 adult males, the mean pulse rate is 70.2 bpm and the standard deviation is 10.7 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)
Claim: The standard deviation of pulse rates of adult males is more than 11 bpm. For a random sample of 170 adult males, the pulse rates have a standard deviation of 12.2 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)
A normal distribution has a mean of μ = 50 and a standard deviation of σ =12. Find the proportion of the distribution located in the tail for X = 53.
At a certain high school, every freshman has his or her height The freshman boys have a mean height of 65.2 inches and a standard deviation of 3.2 inches. The freshman girls have a mean height of 63.5 inches and a standard deviation of 2.7 inches. The proportion of of freshman girls has heights between 60 to 65 inches is 0.6133. What is the interpretation of this normal density area? (i) The proportion of freshman having heights between 60 to 65 inches is 0.6133 (ii) The probability that a randomly selected freshman girl have heights between 60 to 65 inches is 0.6133 or 61.33% Oboth (i) and (ii) are correct We can not interpret the given area..

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