4. The burning time (in minutes) of heaters used in the protection of orchards from frost is measured for random samples of two different brands, A and B, yielding the following results: Standard deviation Brand Sample Size Mean A 625 B 580 14 12 45 35 a) Does the data provide sufficient evidence to conclude that the burning time for Brand A is, on average, the same as the burning time for Brand B? Use a = 0.01. State all assumptions that are needed for your test to be valid. b) Estimate the difference in mean burning times using a 99% confidence interval.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Question
Q4
supporting the legalization of marijuana.
4. The burning time (in minutes) of heaters used in the protection of orchards from frost
is measured for random samples of two different brands, A and B, yielding the following
results:
Standard deviation
!
F1
old a) Does the data provide sufficient evidence to conclude that the burning time for Brand A is, on
average, the same as the burning time for Brand B? Use a = 0.01. State all assumptions that
are needed for your test to be valid.
My b) Estimate the difference in mean burning times using a 99% confidence interval.
Unvies
Brand Sample Size Mean
A
625
B
580
Ama
2022-08-20 Locked
Notes
@
30
F2
#
14
12
80
F3
$
Q
F4
BLO
%
1
45
35
9
F5
F6
&
F7
F8
AN
F9
Transcribed Image Text:supporting the legalization of marijuana. 4. The burning time (in minutes) of heaters used in the protection of orchards from frost is measured for random samples of two different brands, A and B, yielding the following results: Standard deviation ! F1 old a) Does the data provide sufficient evidence to conclude that the burning time for Brand A is, on average, the same as the burning time for Brand B? Use a = 0.01. State all assumptions that are needed for your test to be valid. My b) Estimate the difference in mean burning times using a 99% confidence interval. Unvies Brand Sample Size Mean A 625 B 580 Ama 2022-08-20 Locked Notes @ 30 F2 # 14 12 80 F3 $ Q F4 BLO % 1 45 35 9 F5 F6 & F7 F8 AN F9
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