The owner of a mobile ice-crane believes that hot weather affects his sales. To investigate the effect on his business, he collected data on his daily sales"P" and the maximum temperature "T" on each of the 20 days. He then coded the data using x = T-20 and y = P-300. And calculated the summary statistics given below Ex = 57 Ey = 2222 Ex2 401 Ey? 305576 Exy 3871 a. Find the Product Moment Correlation Coefficient (PMCC) b. Calculate the probable error of the correlation coefficient above in "a" c. Find an equation of the regression line of P on T
The owner of a mobile ice-crane believes that hot weather affects his sales. To investigate the effect on his business, he collected data on his daily sales"P" and the maximum temperature "T" on each of the 20 days. He then coded the data using x = T-20 and y = P-300. And calculated the summary statistics given below Ex = 57 Ey = 2222 Ex2 401 Ey? 305576 Exy 3871 a. Find the Product Moment Correlation Coefficient (PMCC) b. Calculate the probable error of the correlation coefficient above in "a" c. Find an equation of the regression line of P on T
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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Transcribed Image Text:QUESTION FOUR
The owner of a mobile ice-crane believes that hot weather affects his sales.
To investigate the effect on his business, he collected data on his daily sales"P"
and the maximum temperature "T" on each of the 20 days. He then coded the data
using x = T- 20 and y = P- 300. And calculated the summary statistics given below.
Ex = 57 Ey = 2222 Ex2 = 401 Ey? 305576 Exy 3871
%3!
a. Find the Product Moment Correlation Coefficient (PMCC)
b. Calculate the probable error of the correlation coefficient above in "a"
c. Find an equation of the regression line of P on T
The owner of the mobile ice-cream crane doesn't believe it is profitable for him to run his
business if he takes less than K460 in a day.
d. According to your regression, at what maximum daily temperature does it become
unprofitable for him to run his business
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