Research Methods for the Behavioral Sciences (MindTap Course List)
5th Edition
ISBN: 9781305104136
Author: Frederick J Gravetter, Lori-Ann B. Forzano
Publisher: Wadsworth Publishing
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Textbook Question
Chapter 1, Problem 13E
Determine whether each of the following hypotheses is testable and refutable. If not, explain why.
- The color red as seen by males is different from the color red as seen by females.
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The average life expectancy of tires produced by the Whitney Tire Company has been 40,000 miles. Management believes that due to a new production process, the life expectancy of its tires has increased. In order to test the validity of this belief, the correct set of hypotheses is
a.
H 0: μ ≥ 40,000 H a: μ < 40,000
b.
H 0: μ ≤ 40,000 H a: μ > 40,000
c.
H 0: μ < 40,000 H a: μ ≥ 40,000
d.
H 0: μ > 40,000 H a: μ ≤ 40,000
For each of the following research questions,
state the null and research hypotheses in words and in symbols; then
determine the type of the hypothesis test.
A national survey reported that children’s mean cholesterol level is 191 mg/dL. An investigator hypothesizes that cholesterol levels in children might be decreased by educating their parents on proper nutrition and exercise.
A well-known pain medication is publicized to produce pain relief in 75% of patients within 30 minutes of taking the drug. A new pharmaceutical company claims that they have developed a new drug that produces pain relief in a larger proportion of people within 30 minutes.
A manufacturer claims that the machines filling a one-gallon container of milk are set to fill the container with an average of 128 fluid ounces of milk. A consumer believes that the machine is filling the containers with less than 128 fluid ounces, on average. Which of the following would be appropriate hypotheses for the consumer to test?
Chapter 1 Solutions
Research Methods for the Behavioral Sciences (MindTap Course List)
Ch. 1.2 - Describe tenacity and intuition as methods of...Ch. 1.2 - Describe and identify an example of the method of...Ch. 1.2 - Describe and identify an example of the rational...Ch. 1.2 - Describe and identify an example of the empirical...Ch. 1.3 - Identify and describe the steps of the scientific...Ch. 1.3 - Prob. 6LOCh. 1.3 - Prob. 7LOCh. 1.3 - Prob. 8LOCh. 1.3 - Explain the distinction between science and...Ch. 1.4 - Describe the difference between qualitative and...
Ch. 1.4 - Identify and describe the steps in the research...Ch. 1 - In addition to the key words that were defined in...Ch. 1 - Describe how the cliche You can lead a horse to...Ch. 1 - Describe why you might be cautious about using the...Ch. 1 - Prob. 4ECh. 1 - Pessimists commonly claim that, if you drop a...Ch. 1 - What are the five steps of the scientific method?Ch. 1 - Describe the difference between inductive and...Ch. 1 - State a hypothesis that identifies a specific...Ch. 1 - Is the following hypothesis testable, refutable,...Ch. 1 - Describe what it means to say that science is...Ch. 1 - An expert appears on a shopping network to explain...Ch. 1 - A social science researcher would like to...Ch. 1 - Determine whether each of the following hypotheses...Ch. 1 - In this chapter, we identified a variety of...Ch. 1 - Prob. 2EA
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.arrow_forwardAn automobile manufacturer claims that the average gas mileage of a new model is 35 miles per gallon (mpg). A consumer group is skeptical of this claim and thinks the manufacturer may be overstating the average gas mileage. If µ represents the true average gas mileage for this new model, which of the following gives the null and alternative hypotheses that the consumer group should test?arrow_forwardQuestions 1 and 2: Set up the Null and Alternative hypotheses to test the following claims: 1. A health insurance company wants to determine if less than 25% of U.S. residents have been to a hospital emergency room within the past year. State the null and alternative hypotheses. H0: HA: 2. A company makes canned clam chowder (a delicious New England tradition). On the label, the company claims that the chowder contains (on average) 3.5 grams of Total Fat per serving. A consumer group would like to test this claim is true. State the null and alternative hypotheses that you would use to test if the mean amount of Total Fat per serving differs from 3.5 grams: H0: HA:arrow_forward
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- Which pair of hypotheses would be correct for the following claim: Claim: The average human body temperature is 98.6◦ F. A. H0 :μ=98.6and H1 :μ<98.6 B. H0 :μ<98.6andH1 :μ=98.6 C. H0 :μ=98.6andH1 :μ̸=98.6 D. H0 :μ̸=98.6andH1 :μ=98.6 E. H0 :μ=98.6andH1 :μ>98.6 F. H0 :μ>98.6andH1 :μ=98.6arrow_forwardAt a summer tea party in Cambridge, England, a lady states that tea poured into milk tastes differently than that of milk poured into tea. The lady in question claimed to be able to tell whether the tea or the milk was added first to a cup. Her notion was thought unlikely by the scientific minds of the group. But one guest, by the name Sir Ronald Fisher (1890-1962) proposes to scientifically test the lady's hypothesis. There was no better person to conduct such a test, for Fisher had brought to the field of statistics an emphasis on controlling the methods for obtaining data and the importance of interpretation. He knew that how the data was gathered and applied was as important as the data themselves. Fisher proposed to give her eight cups, four of each variety, in random order. One could then ask what the probability was for her getting the number she got correct or just by chance. The woman got all eight cups correct. The chance of someone who just guesses getting all correct,…arrow_forwardWhich of the following below could be the alternative hypothesis ? ( look at the image )arrow_forward
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