(a) State the hypotheses used in performing this test. (b) Using the output above, state the decision (Reject or Not Reject Ho) of the hypothesis test, as well as why you made that decision. (c) Based on the decision you made, state your conclusion in the context of the problem.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 26PFA
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6. Setup: JP was curious about the sodium content of organic cornflakes. To investigate
this, twenty 300-gram boxes of organic cornflakes were obtained and the sodium content
was measured. The data (in milligrams) are as follows:
131.1, 130.7, 130.9, 129.5, 129.6,
128.8, 130.7, 128.3, 128.2, 129.7,
130.1, 129.3, 128.7, 129.0, 129.4,
130.4, 129.5, 130.1, 129.8, 130.0
Task: Perform a hypothesis test using R to determine if you can support a claim that the
mean sodium content of this brand of cornflakes differs from 130 milligrams? Use a = 0.08
to make your decision.
R Output: Upon running your analysis in R, you obtain the following results:
One Sample t-test
data:
corn
= 0.1121
t = -1.6659, df =
alternative hypothesis: true mean is not equal to 130
19, р-value
92 percent confidence interval:
129.3458 130.0342
sample estimates:
mean of x
129.69
Questions:
(a) State the hypotheses used in performing this test.
(b) Using the output above, state the decision (Reject or Not Reject Ho) of the hypothesis
test, as well as why you made that decision.
(c) Based on the decision you made, state your conclusion in the context of the problem.
Transcribed Image Text:6. Setup: JP was curious about the sodium content of organic cornflakes. To investigate this, twenty 300-gram boxes of organic cornflakes were obtained and the sodium content was measured. The data (in milligrams) are as follows: 131.1, 130.7, 130.9, 129.5, 129.6, 128.8, 130.7, 128.3, 128.2, 129.7, 130.1, 129.3, 128.7, 129.0, 129.4, 130.4, 129.5, 130.1, 129.8, 130.0 Task: Perform a hypothesis test using R to determine if you can support a claim that the mean sodium content of this brand of cornflakes differs from 130 milligrams? Use a = 0.08 to make your decision. R Output: Upon running your analysis in R, you obtain the following results: One Sample t-test data: corn = 0.1121 t = -1.6659, df = alternative hypothesis: true mean is not equal to 130 19, р-value 92 percent confidence interval: 129.3458 130.0342 sample estimates: mean of x 129.69 Questions: (a) State the hypotheses used in performing this test. (b) Using the output above, state the decision (Reject or Not Reject Ho) of the hypothesis test, as well as why you made that decision. (c) Based on the decision you made, state your conclusion in the context of the problem.
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