5. A company claims that a vitamin supplement decreases the recovery time from a common cold. A researcher selected randomly 70 adults with a cold. 35 of those were randomly selected to receive the vitamin. The data on the recovery time are shown below. Test the claim of the company at a = 0.05. Population No vitamin vitamin Sample size 35 35 Sample mean 6.9 5.8 Sample standard deviation 2.9 1.2
5. A company claims that a vitamin supplement decreases the recovery time from a common cold. A researcher selected randomly 70 adults with a cold. 35 of those were randomly selected to receive the vitamin. The data on the recovery time are shown below. Test the claim of the company at a = 0.05. Population No vitamin vitamin Sample size 35 35 Sample mean 6.9 5.8 Sample standard deviation 2.9 1.2
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Question
![950,
= 1900
1900
5. A company claims that a vitamin supplement decreases the recovery
time from a common cold. A researcher selected randomly 70 adults
with a cold. 35 of those were randomly selected to receive the vitamin.
The data on the recovery time are shown below. Test the claim of the
company at a = 0.05 .
Population
No vitamin
vitamin
Sample size
35
35
Sample mean
6.9
5.8
Sample standard
deviation
2.9
1.2
ances](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4ab6b9aa-4e55-4dea-b900-354e42dbcaaf%2F68b23319-1fc7-446f-8aca-7db12a3e11cd%2Fw0rjrtt_processed.jpeg&w=3840&q=75)
Transcribed Image Text:950,
= 1900
1900
5. A company claims that a vitamin supplement decreases the recovery
time from a common cold. A researcher selected randomly 70 adults
with a cold. 35 of those were randomly selected to receive the vitamin.
The data on the recovery time are shown below. Test the claim of the
company at a = 0.05 .
Population
No vitamin
vitamin
Sample size
35
35
Sample mean
6.9
5.8
Sample standard
deviation
2.9
1.2
ances
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