The relative frequency of a class in a frequency distribution is 0.2. If the distribution has a total of 50observations, then the frequency of the class is,a. 25О Ь. 15О с. 10O d. 12

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Statistics Question
A survey was taken on how much trust people place in the information they read on the Internet. Construct a categorical frequency distribution for the data. A trust in all that they read, M trust in most of what they read, H trust in about one-half of what they read, S trust in a small portion of what they read. M H M M H. M S H. A M H. H S M ΣΣ-Σ ΣΣΣu Σο ΣΣ ΣΣΣ ο M H H ΣΣΣ ΣΣΣ ο
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Bill Alther is a zoologist who studies Anna's hummingbird (Calypte anna). (Reference: Hummingbirds, K. Long, W. Alther.) 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 = 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 σ = 0.64 gram. Suppose it is known that for the population of all Anna's hummingbirds, the mean weight is μ = 4.30 grams. Do the data indicate that the mean weight of these birds in this part of the Grand Canyon is less than 4.30 grams? Use ? = 0.10. (a) What is the level of significance? (Enter a number.) State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? H0: μ = 4.3 g; H1: μ > 4.3 g; right-tailed H0: μ < 4.3 g; H1: μ = 4.3 g; left-tailed…
A survey was taken on how much trust people place in the information they read on the Internet. Construct a categorical frequency distribution for the data. A trust in all that they read, M trust in most of whathey read, H trust in about one-half of what they read, S trust in a small portion of what they read. M H M S M M A M I H. H. H H M H M S M M S M S Σ Σ ΣΙΣΣ ΣΣΣ ο
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The relative frequency of a class in a frequency distribution is 0.2. If the distribution has a total of 50 observations, then the frequency of the class is, a. 25 О Ь. 15 О с. 10 O d. 12