Answered: Covid-19, making malls in Singapore…

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)

6th Edition

ISBN:9781337111348

Author:Bruce Crauder, Benny Evans, Alan Noell

Publisher:Bruce Crauder, Benny Evans, Alan Noell

ChapterP: Prologue: Calculator Arithmetic

Section: Chapter Questions

Problem 2E: Pet Owners According to the Humane Society, in 2015, 65% of U.S. households owned at least one pet,...

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Covid-19, making malls in Singapore begin to limit the number of visitors and time of visits. One of the marketing directors of a large department store wanted to estimate the average number of customers who entered the store every five minutes. He randomly selects a sample and watches the customer for five minutes. He got the numbers 74, 32, 41, 47, 56, 80, 45, 29, 32, and 78. Then the director asked the analyst to count the number of arrivals at the store. The analyst assumes the number of arrivals is normally distributed. Using this data and a 95% confidence interval, calculate the estimated five-minute average value inside the department store! What is the benefit of estimating the estimated value in this case (analyze the answers you have obtained)?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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