A wildlife biologist is interested in comparing the meannumber of miles flown per day by two types of birdswhen migrating over the ocean. Two independentsamples of miles flown per day are collected with thefollowing sample statistics.x1 =131.8, X2 =129.5, s1 =10.3, s2 =11.5The sample size for the first sample is n₁ =31 and thesecond sample has sample size n₂ =36.Compute the test statistic for the following null andalternative hypotheses. Use two decimal placeaccuracy.Ho : μ1 = μ2HA : μι < μ2

given data x¯ = 131.8s1 = 10.3n1 = 31x¯2 = 129.5s2 = 11.5n2 = 36hypothesisH0 : μ1 = μ2H1 : μ1 <…

Answered: A wildlife biologist is interested in…

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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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 40 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 o = 7.10 ml/kg for the distribution of blood plasma. When finding an 99% confidence interval, what is the critical value for confidence level? (Give your answer to two decimal places.) (a) Find a 99% confidence interval for the population mean blood plasma volume in male firefighters. What is the margin of error? (Round your answers to two decimal places.) lower limit upper limit margin of error (b). What conditions are necessary for your calculations? (Select all that apply.) n is large the distribution of volumes is normal o is unknown the distribution of volumes is uniform…
Thomas wants to compare the mean concentration of carbon monoxide (CO) on residential versus commercial streets, since these differ in terms of car traffic. In each of three neighborhoods of Montréal (named A, B, and C below), he randomly chooses four locations for each type of street, for a total of 24 observations (2 street types x 3 neighborhoods x 4 locations). At each location, he measures CO concentration in the air over a period of 10 hours (8:00 AM-6:00 PM), and obtains the following data (in ppm/h). Question: Test whether or not the difference between residential and commercial streets in mean atmospheric CO concentration is the same among the three neighborhoods, and whether or not CO concentration in the air is the same, on average, for the two types of streets. Note that Neighborhood is considered a random block factor in the ANOVA. Use significant level= 0.05.
Two brands of batteries are tested, and their voltage is compared. The data follow. Test the claim that voltage of brand X is less than voltage of brand Y. Assume that both variables are normally distributed. use a 0.05 level of significance. Brand X Brand Y sample mean = 8.2 Sample mean= 8.4 O, = 0.3 n, = 27 oy = 0.1 ny = 30
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