Question
In: Statistics and Probability
A researcher wishes to determine whether the blood pressure of vegetarians is, on average, lower than...
A researcher wishes to determine whether the blood pressure of vegetarians is, on average, lower than the blood pressure of nonvegetarians. Independent simple random samples of 85 vegetarians and 75 nonvegetarians yielded the following sample statistics for systolic blood pressure:
|
Vegetarians |
n1= 85 |
= 124.1 mmHg |
s1 = 38.7 mmHg |
|
Nonvegetarians |
n2 = 75 |
= 138.7 mmHg |
s2 = 39.2 mmHg |
Use a significance level of 0.01 and P-value method to test the claim that the mean systolic blood pressure of vegetarians is lower than the mean systolic blood pressure of nonvegetarians. Do not assume that the population standard deviations are equal. Is being a vegetarian lower the risk of having blood pressure related illness?
- State the requirement
- State the null and alternative hypotheses with the correct symbols
- Write all the statistics
- Write the formula of the test statistic and find the test statistic (you may use a calculator, but you are required to write down the command and all the numbers you enter)
- Find the critical value or the P-value (you may use a calculator, but you are required to write down the command and all the numbers you enter)
- Decide to reject or fail to reject H0 and explain the reason
- Wording the conclusion
- Answer the question based on your result above
Solutions
orchestra answered 2 years agoRelated Solutions
A researcher wishes to determine whether the systolic blood pressure of people who follow a vegetarian...
A researcher wishes to determine whether the systolic blood
pressure of people who follow a vegetarian diet is, on average,
lower than the systolic blood pressure of those who do not follow a
vegetarian diet. Independent simple random samples of 85 vegetarian
and 75 nonvegetarians yielded the following sample statistics:
Vegetarians
Nonvegetarians
Mean = 124.1
Mean = 138.7
s1 = 38.7
s2 = 39.2
Use the significance level of 0.01 to test the claim of the
researcher.
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TWO MEANS
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did not followed the diet.
Followed the diet: n1 = 85, x ̅_1 = 189.1 s1 = 38.7 Did not
follow the diet: n2 = 75, x ̅_2 = 203.7 s2 = 39.2...
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Resource: The One-Way ANOVA
Identify the null hypothesis, Ho, and the alternative
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Determine whether the hypothesis test is left-tailed,
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Find the critical...
6. A medical researcher wishes to try three different techniques to lower blood pressure of patients...
6. A medical researcher wishes to try three different techniques
to lower blood pressure of patients with high blood pressure. The
subjects are randomly selected and assigned to one of three groups.
Group 1 is given medication, Group 2 is given an exercise program,
and Group 3 is assigned a diet program. At the end of six weeks,
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Q1. Perform a test of hypothesis to determine whether the average TiQ is lower than the...
Q1. Perform a test of hypothesis to determine whether
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I just need to know the null and alternative hypothesis
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numbers.
Q1. Perform a test of hypothesis to determine whether the average TiQ is lower than the...
Q1. Perform a test of hypothesis to determine whether
the average TiQ is lower than the industry standard of 2.5 minutes
(150 seconds). Use a significance level of
α=0.05.
I just need to know the null and alternative hypothesis
for this scenario and the decision rule. Since I can't upload the
file, the decision rule can just be an example with dummy
numbers.
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