In an effort to link cold environments with hypertension in humans, a preliminary experiment was conducted to investigate the effect of cold on hypertension in rats. Two random samples of 6 rats each were exposed to different environments. One sample of rats was held in a normal environment at 26°C. The other sample was held in a cold 5°C environment. Blood pressures and heart rates were measured for rats for both groups. The blood pressures for the 12 rats are shown in the table below. Provide a 95% confidence interval on the difference in the two population means.Do the data provide sufficient evidence that rats exposed to a 5°C environment have a higher mean blood pressure than rats exposed to a 26°C environment? Use α = 0.05. 2. In an effort to link cold environments with hypertension in humans, a preliminary experimentwas conducted to investigate the effect of cold on hypertension in rats. Two random samples of 6tats.cach were exposed to different environments. Qne sample of rats was held in a normalenvironment at 26°C. The other sample was held in a cold 5°C environment. Blood pressures andheart rates were measured for rats for both groups. The blood pressures for the 12 rats are shownin the table below.a. Provide a 95% confidence interval on the difference in the two population means.b. Do the data provide sufficient evidence that rats exposed to a 5°C environment have ahigher mean blood pressure than rats exposed to a 26°C environment? Use a = 0.05.26°CBlood Pressure5°CRatRatBlood Pressure1152738421578369317935441821037551761136614912423

The null hypothesis is generally denoted as H0. It states the exact opposite of what an investigator…

Answered: In an effort to link cold environments…

Human Anatomy & Physiology (11th Edition)

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ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

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In an effort to link cold environments with hypertension in humans, a preliminary experiment was conducted to investigate the effect of cold on hypertension in rats. Two random samples of 6 rats each were exposed to different environments. One sample of rats was held in a normal environment at 26°C. The other sample was held in a cold 5°C environment. Blood pressures and heart rates were measured for rats for both groups. The blood pressures for the 12 rats are shown in the table below.

Provide a 95% confidence interval on the difference in the two population means.
Do the data provide sufficient evidence that rats exposed to a 5°C environment have a higher mean blood pressure than rats exposed to a 26°C environment? Use α = 0.05.

2. In an effort to link cold environments with hypertension in humans, a preliminary experiment
was conducted to investigate the effect of cold on hypertension in rats. Two random samples of 6
tats.cach were exposed to different environments. Qne sample of rats was held in a normal
environment at 26°C. The other sample was held in a cold 5°C environment. Blood pressures and
heart rates were measured for rats for both groups. The blood pressures for the 12 rats are shown
in the table below.
a. Provide a 95% confidence interval on the difference in the two population means.
b. Do the data provide sufficient evidence that rats exposed to a 5°C environment have a
higher mean blood pressure than rats exposed to a 26°C environment? Use a = 0.05.
26°C
Blood Pressure
5°C
Rat
Rat
Blood Pressure
1
152
7
384
2
157
8
369
3
179
354
4
182
10
375
5
176
11
366
149
12
423

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