The number of arrivals per minute at a bank located in the central business district of a large city was recorded over a period of200 minutes, with the results shown in the table below. Complete (a) through (c) to the right.Arrivals001234567∞Frequency18354638251911862a. Compute the expected number of arrivals per minute.με(Type an integer or decimal rounded to three decimal places as needed.)b. Compute the standard deviation.σ =(Type an integer or decimal rounded to three decimal places as needed.)c. What is the probability that there will be fewer than 2 arrivals in a given minute?P(x-2)=(Type an integer or decimal rounded to three decimal places as needed.)

a)We need to calculate the expected number of arrivals.Let x denote the arrivals, and f denote the…

Answered: The number of arrivals per minute at a…

Algebra for College Students

10th Edition

ISBN:9781285195780

Author:Jerome E. Kaufmann, Karen L. Schwitters

Publisher:Jerome E. Kaufmann, Karen L. Schwitters

Chapter10: Exponential And Logarithmic Functions

Section10.CR: Review Problem Set

Problem 62CR

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The table below contains the periodontal status of individuals and their sex. Periodontal status refers to gum disease where individuals are classified as either Healthy, have Gingivitis, or have Periodontal Disease (Perio). Female Male Total Healthy 2108 1124 3232 Gingivitis 1582 937 2519 Perio 873 931 1804 Find Pr{Female|Gingivitis). If necessary, round your answer to 3 places after the decimal. Total 4563 2992 7555
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