Answered: Last year the number of visitors of the…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 11PPS

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3 Last year the number of visitors of the central cinema was normally distributed about the mean of 460 people per month. At the beginning of the current year, the price of a ticket was raised by 50%. A sample of 5 months provided the following numbers of visitors: 310, 350, 440, 480, and 490. At a 0.05 level of significance, do these data indicate that the number per month of cinema spectators has dropped since last year?

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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