3. Classify the following random variables as discrete or continuous. Circle the correct answer.1) Number of customers served by a coffee shop per hour.Discrete2) Amount of milk used per drink.Discrete3) Time taken to prepare a drink.DiscreteContinuousContinuousContinuous2

Answered: 3. Classify the following random…

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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Bill Alther is a zoologist who studies Anna's hummingbird (Calypte anna).t Suppose that in a remote part of the Grand Canyon, a random sample of six of these birds was caught, weighed, and released. The weights (in grams) were as follows. 3.7 2.9 3.8 4.2 4.8 3.1 The sample mean is x = 3.75 grams. Let x be a random variable representing weights of hummingbirds in this part of the Grand Canyon. We assume that x has a normal distribution and a- 0.90 gram. Suppose it is known that for the population of all Anna's hummingbirds, the mean weight is u= 4.70 grams. Do the data indicate that the mean weight of these birds in this part of the Grand Canyon is less than 4.70 grams? Use a- 0.05. (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? Ho: H 4.7 g; right-tailed Ho: H= 4.7 g; H: < 4.7 g; left-tailed Ho: H- 4.7 g; H: 4.7 g; two-tailed (b) What sampling distribution will you use? Explain the rationale…
Dimensional characteristics, such as height, are an example of a: a. continuous random variable b. discrete random variable c. categorical random variable d. Any of the above
Bill Alther is a zoologist who studies Anna's hummingbird (Calypte anna).t Suppose that in a remote part of the Grand Canyon, a random sample of six of these birds was caught, weighed, and released. The weights (in grams) were as follows. 3.7 2.9 3.8 4.2 4.8 3.1 The sample mean is x = 3.75 grams. Let x be a random variable representing weights of hummingbirds in this part of the Grand Canyon. We assume that x has a normal distribution and o = 0.96 gram. Suppose it is known that for the population of all Anna's hummingbirds, the mean weight is µ = 4.80 grams. Do the data indicate that the mean weight of these birds in this part of the Grand Canyon is less than 4.80 grams? Use a = 0.10. (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right- tailed, or two-tailed test? O Ho: H 4.8 g; right-tailed O Ho: H = 4.8 g; H1: µ < 4.8 g; left-tailed (b) What sampling distribution will you use? Explain the rationale for your choice of…
Is the following random variable discrete or continuous? Let X represent the number of books in a random professor's office.
O Let x be a random variable that represents the batting average of a professional baseball player. Let y be a random variable that represents the percentage of strikeouts of a professional baseball player. A random sample of n = 6 professional baseball players gave the following information. 0.310 0.340 0.248 0.367 0.269 Conclusion X 0.318 y 2.9 (a) Find Ex, Ey, Ex, Ey, Exy, and r. (Round only r to three decimal places.) Eyl % t Conclusion 7.8 a= Exal (b) Use a 5% level of significance to test the claim that p = 0. (Round your answers to three decimal places.) critical t Ex²=1 4.0 8.6 Ev=l (c) Find S, a, and b. (Round your answers to four decimal places.) b= 3.1 Reject the null hypothesis, there is sufficient evidence that p differs from 0. Reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is sufficient evidence that p…
determine whether the random variable x is discrete or continuous. let x represent the populations of the 50 U.S. states

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3. Classify the following random variables as discrete or continuous. Circle the correct answer. 1) Number of customers served by a coffee shop per hour. Discrete 2) Amount of milk used per drink. Discrete 3) Time taken to prepare a drink. Discrete Continuous Continuous Continuous