Concept explainers
(a)
To Explain: that there sufficient evidence to conclude that eating a three-ounce dark chocolate bar every day will lower one’s systolic bold pressure and write the null and alternative hypotheses for this experiment.
(a)
Answer to Problem 10.65RE
Explanation of Solution
Given:
Claim: Mean difference is smaller than 0(lowered)
Assume:
The claim is either the null hypothesis or the alternative hypothesis .the null hypothesis statement is that the population mean is equal to the value given in the claim. If the null hypothesis is the claim, then the alternative hypothesis statement is of the null hypothesis.
(b)
To Calculate: the test statistic and the p-value and there is sufficient evidence to reject null hypothesis.
(b)
Answer to Problem 10.65RE
Yes
Explanation of Solution
Formula used:
Calculation:
The sample size of
The Z-value is
The P-Value is the probability of getting a value more extreme or equal to the standardized test statistic
If the P-value is lesser than the significance level
(c)
To Explain: the conclusion in plain language.
(c)
Answer to Problem 10.65RE
There is alternative hypothesis is accepted.
Explanation of Solution
There is no enough evidence to help the claim that eating a three-ounce dark chocolate bar every day will lower one’s systolic blood pressure.
(d)
To Explain: that any concerns about the design of this experiment and done anything differently.
(d)
Answer to Problem 10.65RE
Yes, increase the sample size.
Explanation of Solution
The sample size of
Chapter 10 Solutions
Statistics Through Applications
Additional Math Textbook Solutions
Elementary Statistics (13th Edition)
Statistics for Psychology
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