Concept explainers
According to an article in Science Daily (“Still No Strong Evidence That Adjunct Treatment with HGH in IVF Improves Results,” sciencedaily.com, July 4, 2016, retrieved November 26, 2016), women who are·e having difficulty becoming pregnant sometimes use human growth hormone (HGH) in addition to in-vitro fertilization (IVF) to try to have a baby. A large study found that “there was no strong evidence” that the proportion of women who became pregnant while taking HGH along with IVF was greater than the success rate for IVF alone.
- a. Is this consistent with testing
H0: HGH in addition to IVF increases the chance of getting pregnant
versus
Ha: HGH in addition to IVF does not increase the chance of getting pregnant
or with testing
Ho: HGH in addition to IVF does not increase the chance of getting pregnant
versus
Ha: HGH in addition to IVF increases the chance of getting pregnant
Explain.
- b. Does the stated conclusion of “no strong evidence” indicate that the null hypothesis was rejected? Explain.
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Chapter 10 Solutions
Introduction To Statistics And Data Analysis
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- A 2012 survey of 404 American adults indicates that 17% of cell phone owners do their browsing on their phone rather than a computer or other device. According to an online article, a report from a mobile research company indicates that 38% of Chinese mobile web users only access the internet through their cell phones. We wish to conduct a hypothesis test to determine if these data provide strong evidence that the proportion of Americans who only use their cell phones to access the internet is less than the Chinese proportion of 38%. (a) The Null Hypothesis, in mathematical symbols, is: H0 : p = ________(b) The Alternative Hypothesis, in mathematical symbols, is: HA : p __________ In both the null and alternative hypotheses, the symbol is the proportion of American adult cell phone owners who do their browsing on their phone. (c) The standard error based on the null hypothesis is: (d) Our data indicates a proportion of Americans who use their phones to browse is . We need to use…arrow_forwardThe federal government recently granted funds for a special program designed to reduce crime in high-crime areas. A study of the results of the program in high-crime areas of Miami, Florida, are being examined to test the effectiveness of the program. The difference in crimes reported is calculated as (crimes after - crimes before). You want to test whether the average number of crimes reported after are different from the average number of crimes reported before. What are the hypotheses for this test? O 11 Ho: HD 2 0 HA: HD 0 HA: HD 0arrow_forwardIt is known through Operation Laban Altapresyon that 15% of adults from the Province of Realeza are hypertensive. Princess recently conducted a survey to determine the prevalence of high blood pressure among the towns of the Province of Realeza. Her findings are tabulated below.arrow_forward
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