In a study examining the relationship between coffee consumption and heart disease, the researcher obtained a value of r(120) = -.88, p = .04. The results conclude: Group of answer choices proves that the more coffee you drink, the less chance of heart disease. proves that the less coffee you drink, the greater the chance of heart disease. demonstrates that there is a strong relationship between coffee consumption and heart disease. demonstrates that there is a poor relationship between coffee consumption and heart disease.

Q: A reporter claims that less than one in four Americans believe that Facebook acted inappropriately…

A: H0 : p =1/4 = 0.25 H1 : p <0.25

Q: In a study on sodium-restricted diets, the researchers observed 50 patients with hypertension.…

A: The claim is that the proportion of patients on sodium-restricted diets is higher among patients…

Q: Is the proportion of wildfires caused by humans in the south lower than the proportion of wildfires…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any questions so i am solving…

Q: A study of cats and dogs found that 29 of 50 cats and 19 of 50 dogs slept more than 10 hours  per…

A: The proportion of the sample taken from the population is tested using the z-test. If the proportion…

Q: An investigation was carried out to study possible consequences of the high incidence of head…

A: The mean of the sample mean is 30.1809. The test is to check whether there is sufficient evidence to…

Q: A researcher is interested in factors related to academic performance of students.She hypothesized…

A: Given: Number of categories of academic majors (c) = 4 Test value = 2.75 p value = 0.283

Q: Legumes have various health benefits, including their high fiber content, which may lower the risk…

A: The formula of the test statistic of the two sample t-test is,where, denotes the mean of first…

Q: Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…

A: a. Denote p1, p2 as the true population proportions of wildfires caused by human in south and west,…

Q: Dementia is a common mental health problem affecting those over65. It is believed that of those that…

A: a) The null hypothesis is a simple statement about the value of the population parameter which is…

Q: Researchers have noted a decline in cognitive functioning as people age (Bartus, 1990). However, the…

A: The average of student MD is 7.4 and variance SS is 1215. Hypothesis: H0:µD=0 The antioxidant…

Q: Inadequate exposure to outdoor lighting conditions may increase the risk of myopia in children. A…

A:

Q: In a study of 301 Hispanic women living in San Antonia, Texas, one variable of interest was the…

A: Given information Sample size n= 301 women No of women classified in the IFG stage x= 24 Population…

Q: A researcher wanted to examine whether type of dog food (freeze dried meat vs generic brand kibble)…

A: Here , sample size , n = 13 subjects  The mean of the difference scores (MD)was 7.0  SSD for the…

Q: In Hong Kong, some employers claim that they are willing to offer better starting salaries for those…

A: We know that, Association means the one variable is related in some way to another variable. There…

Q: Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…

A:

Q: Women: 53 patients had high blood pressure Required: Test Value Only the final answer should be…

A: Given :   n1= 168 n2= 168 significance level, 0.05 sample proportion p̂1…

Q: The researchers aimed to investigate whether there was a link between recent oral contraceptive (OC)…

A: To estimate the odds of OC use among those with MI and the odds of OC use among those without MI,…

Q: The z-statistic for this hypothesis test was z = –2.95. Based on this z-statistic, what is the…

A: Given that Test statistic=z=-2.95 H0 : p1 = p2 Vs H1 : p1 ≠ p2

Q: A recent study randomly selected women from various countries around the world and collected…

A:

Q: A researcher has participants expecting to receive either painful or mild electrical shocks during a…

A: Usually in survival analysis studies we can use both parametric and non-parametric statistics. For…

Q: Is the proportion of wildfires caused by humans in the south different from the proportion of…

A: n1=590,x1=386,n2=538,x2=363

Q: A meta-analysis (Anderson & Bushman, 2001) reported that the average correlation between time spent…

A: Given that the sample size is n= 21 and correlation coefficient is r= 0.19 We state hypothesis:  H0:…

Q: A researcher conducts an independent-measures study examining how the brain chemical serotonin is…

A: A. Null and alternate hypotheses: The investigator is specifically interested to test whether the…

Q: Researchers have noted a decline in cognitive functioning as people age (Bartus, 1990). However, the…

A:

Q: After reading an article using research done by the Organization for Economic Co-operation and…

A: The 95% confidence interval for p is (0.25, 0.32).

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A: a) Let μd denotes the population mean difference for for self-purchases than for purchases made by…

Q: A research study was conducted about gender differences in "sexting." The researcher believed that…

A: Solution:- from given information claim: The proportion of girls sending sexts is less than the…

Q: Is the proportion of wildfires caused by humans in the south different from the proportion of…

A: Let us consider the two samples which are independent. Let the observation in each samples are taken…

Q: Researchers carried out an experiment to evaluate the effectiveness of using acupuncture to treat…

A: pacupuncture − psham Under inferential statistics

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A: From the group  statistics table we can infer the following things: Mean Blood pressure of…

Q: Researchers have noted a decline in cognitive functioning as people age (Bartus, 1990). However, the…

A: Here it is asked to test, " does this result support the conclusion that the antioxidant supplement…

Q: Does support for assisted suicide (“death with dignity”) vary by social class? Is this relationship…

A: Given the data asMexicoLower ClassWorking ClassMiddle ClassUpper…

Q: Q.23 Consider a drug that is used to help prevent blood clots in certain patients. In clinical…

A: Sample size, n=5991 No. of patients with adverse reaction of nausea, x=153 α=0.01

Q: A researcher surveyed 500 people. She found that the individuals who took some form of over the…

A: The study is experimental study. In this type of study , the group is subjected to some treatment…

Q: A poll surveyed 503 video gamers, and 106 of them said they prefer playing games on a console rather…

A: Denote p as the true proportion of video gamer, who said they prefer playing games on a console…

Q: If there is an interaction, is the interaction significant? That is, does the effect of maternal…

A: Null Hypothesis:   H0: The interaction effect is not significant.   Alternative Hypothesis:   H1:…

Q: In a study examining the relationship between coffee consumption and heart disease, the researcher…

A: The hypotheses are given below: Null hypothesis: H0: There is no relationship between coffee…

Q: A recent study investigated the association between sudden cardiac death and smoking history in…

A: N=180

Q: A study used 1259 patients who had suffered a stro aspirin treatment or a placebo treatment. During…

A: Out of 634 people received placebo, 25 people died from heart attack.  That is, n1= 634 and x1= 25…

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A: The provided information are:

Q: A study was done comparing the effectiveness of exercise vs medication on lowering blood pressure in…

A: Introduction An experiment is a procedure which can be repeated infinitely and has a well-defined…

Q: s the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…

A: