A food bank investigates if the number of times their donors walk by a homeless person each week impacts donors’ charitable contribution to the food bank. The data are presented below in standard form. # of homeless people seen each weekDonation to food bankDonorZXZY1-1.30.3620.64-0.093-1.11.264-0.140.1451.41-0.546-0.52-0.0971.03-1.980.64-0.9990.830.3610-1.491.49 What does ΣZXZY equal? A) 941B) 7.86C) -7.16D) -4.44 What is the correlation (Pearson’s r) between the number of homeless people donors see each week and their donation to the food bank (rounded to 2 decimal places)? A) .98B) -.80C) .72D) -.56 What is the obtained t-value for this r?A) -2.96B) -16.35C) -3.72D) -1.89

The following information has been provided: Donor ZX ZY 1 -1.3 0.36 2 0.64…

Answered: A food bank investigates if the number…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A food bank investigates if the number of times their donors walk by a homeless person each week impacts donors’ charitable contribution to the food bank. The data are presented below in standard form.

	# of homeless people seen each week	Donation to food bank
Donor	Z_X	Z_Y
1	-1.3	0.36
2	0.64	-0.09
3	-1.1	1.26
4	-0.14	0.14
5	1.41	-0.54
6	-0.52	-0.09
7	1.03	-1.9
8	0.64	-0.99
9	0.83	0.36
10	-1.49	1.49

What does ΣZ_XZ_Y equal?
A) 941
B) 7.86
C) -7.16
D) -4.44

What is the correlation (Pearson’s r) between the number of homeless people donors see each week and their donation to the food bank (rounded to 2 decimal places)?

A) .98
B) -.80
C) .72
D) -.56

What is the obtained t-value for this r?

A) -2.96
B) -16.35
C) -3.72
D) -1.89

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