Several recent studies have suggested that people who suffer from abnormally high blood pressure can benefit from regular exercise. She conducts a small sample of 3 random patients with high blood pressure and measures blood pressure before and after the exercise program.   Subject Before After 1 155 133 2 160 140 3 145 120 Conduct a test to see if the claim is supportive. State the hypotheses from the previous problem. (high blood pressure problem)

Q: O 1. The null hypothesis states that in the general population there is no change, no difference, or…

A: Null hypothesis: The hypothesis which is usually a no difference or neutral attitude is called the…

Q: Question Dr. King is concerned that STA 2381 students aren't studying enough. There are 7 sections…

A: A variable is a characteristic that is being measured.

Q: find the degrees of freedom?

A:

Q: In 2001, the polls found that 81% of American adults believed that there was a conspiracy in the…

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Q: . Write null and alternative hypotheses for p.

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Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

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Q: 2. Based on a poll of registered voters in a large city, 120 out of a random sample of 250 women…

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Q: A very large study showed that aspirin reduced the rate of first heart attacks by 44 %. A…

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Q: State the null and the alternative hypotheses

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Q: (d) Your findings so far might suggest who suffer from migraines. However this is not the only…

A: Given data:   Yes  No Total Treatment 10 33 43 Control 2 44 46 Total 12 77 89

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A:

Q: In a National Institute on Alcohol Abuse and Alcoholism survey, 33% of American adults said that…

A: Population proportion, p=0.33 Sample size, n=2300 Sample proportion, p^=0.35

Q: We want to determine if the true proportion of students who do aerobics is less than 45%. Which are…

A: Suppose P is the true proportion of students who do aerobics.

Q: The table below shows results from a recent General Social Survey on two variables, respondent sex…

A: Null hypothesis: Null hypothesis is the statement about parameter of population. Alternative…

Q: A research center claims that at least 23% of adults think their taxes will be audited.  A random…

A: Yes, there is a enough evidence to reject the claim Explanation:Step 1 : Formulate the hypothesis…

Q: Suppose data shows that only 50% of breast cancer patients can survive more than 5 years. You…

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Q: Country Financial, a financial services company, uses surveys of adults age 18 and older to…

A:

Q: eviclara rs has declined in 1%, and the use of 7% to 20.4%. A ity indicated that 54 urvey. At the a…

A:

Q: The first test a doctor would order to determine whether a person is infected with HIV (the virus…

A: Note: As per our Honor code policy, we are authorized to answer only three sub parts at a time. So,…

Q: According to the most recent General Social Survey, 70% of adults watch TV nightly. A researcher…

A:

Q: Suppose data shows that only 50% of breast cancer patients can survive more than 5 years. You…

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Q: A drug considered unsafe if more than 5% of the patients develop serious side effects. In order to…

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Q: you did not answer this  Let p be the true proportion of firms with a chief marketing officer…

A: We have given thatp0 = 56% = 0.56n = 53x = 28p̂ = x/n = 28/53 = 0.5283Significance level (α) = 0.01

Q: who do not pass the test is also employed. Training is successfully completed by only 50%of this…

A: The probability of applicants passed the test is, PP=0.6. The probability of applicants not pass the…

Q: According to a University Center for Logistics Management, 10% of all merchandise sold in the United…

A: From the provided information, Sample size (n) = 89 Out of which 8 of the items were returned. The…

Q: Professor Diff E. Cult wonders if male and female students earn significantly different grades when…

A: Solution: In the given example we are interested in testing the hypothesis that the gender and…

Q: A researcher is wondering whether the drinking habits of adults in a certain region of a country are…

A: Here n = 150 , p = 0.26. In order to use normal approximation, sample must satisfy following…

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Q: A researcher gathered a sample of participants who volunteered for a studying of phobias. She…

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Q: According to a reputable magazine, 32% of all cars sold in a certain country are SUVS. Suppose a…

A:

Q: Suppose are running a study/poll about the proportion of women over 40 who regularly have…

A: here is given that x = 98 which is selected and n = 118 which is number of people. we will use one…

Q: A survey by Men’s Health magazine stated that 14% of men said they used exercise to reduce stress.…

A: The test statistic for a single proportion, Z=p-PP(1-P)nwhere p=sample proportionP=population…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.