Would an observational study or an experiment be more appropriate for a medical research team that is trying to figure out if a new medicine is effective in treating migraines? Justify your response.
Q: How forecasting is quite different from the estimation of causal effects.?
A: Time series data is commonly used to forecast. For example, economic growth for next year is…
Q: Some people seem to believe that you can fix anything with duct tape. Even so, many were skeptical…
A: Hypothesis test needs to be conducted for the claim that
Q: If the statistical analysis shows that the percentage of men taking Vitamin E who de- veloped…
A: The researchers conducted a designed experiment by randomly selecting the healthy men from different…
Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…
A: Test statistic is the measure used to determine there exist significance between the sample and…
Q: A hospital reported that the normal death rate for patients with extensive burns (more than 40% of…
A: Given Information: Population proportion (p) = 0.6 Sample size (n) = 95 Sample proportion (px) =…
Q: he medical researcher is comparing two treatments for fighting a common cold: Zinc and Vitamin C.…
A: Solution: Given information: n1=342+225=567 Sample size of zinc n2=553+319 = 872 Sample size of zinc…
Q: You are the manager for a family medicine clinic that has 3 physicians. The staff have come to you…
A: In order to determine whether there is significant difference in between the mean number of patients…
Q: Many people take ginkgo supplements advertised to improve memory. Are these over-the- counter…
A: The variable is taking a pill 3 times a day for 6 weeks. There are two groups which are treatment…
Q: You've just completed a depleting, or mentally draining task. After doing so do you think you would…
A: The participants in the non-depleted group were given 4 minutes to write a short story about a place…
Q: You are concerned that nausea may be a side effect of Tamiflu, but you cannot just give Tamiflu to…
A: Given : Past research indicates that about 30% of people who get the flu experience nausea , p0 =…
Q: You are a senior in the agricultural sciences department of NCSU doing an internship at a local…
A:
Q: The analgesic effects of music are well known, but most of the studies have been done with adults…
A: Given: The analgesic effects of music are well known, but most of the studies have been done with…
Q: You may need to use the appropriate appendix table to answer this question. Critics of television…
A: From the information, given thatLet X denotes the independent variable indicated by variable…
Q: It appears that there is some truth to the old adage “That which doesn’t kill us makes us stronger.”…
A: Given Information : It appears that there is some truth to the old adage “That which doesn’t kill…
Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…
A: From the provided information, Sample size (n) = 339 From which 7 suffer from sleep apnea that is…
Q: What type of design did they use?
A:
Q: A researcher is interested in studying whether exercising can influence creativity. She measures…
A: Claim: creativity will increase after exercise.
Q: Consider the following scenario based on your personal circumstance – and if you do not have a car…
A: 1- normal rate 2- 4 (total distance 8 miles with return) getting cheaper gas (0.37 /gallon) We…
Q: Doctors were trying to see how frequently patients survived who had a heart attack, had CPR…
A: Given that: Sample size, n=50 No. of successes, x=11 Population proportion, p=0.30
Q: In an experimental study, what makes one variable the predictor (i.e., independent) and the other…
A: The independent variable is the variable the experimenter manipulates or changes, and is assumed to…
Q: How profitable are different sectors of the stock market? One way to answer such a question is to…
A: (a) Given that; n1=32, x¯1=13.2n2=33, x¯2=10σ1=4.2, σ2=2.6 We need to find a 95% confidence interval…
Q: This was a question on my homework and I would like to know if I answered it correctly. Thank you…
A: Odds (O):The “odds” of the occurrence of an event is the ratio of the number of occurrences of the…
Q: A companies HR manager has noticed that they are not retaining their talent. The HR manager believes…
A:
Q: What would be a easy suitable research design for this topic. Topic: The impact of unemployment on…
A: A suitable research design for this topic would be a Cross-Sectional Study. This type of study is…
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: With the pandemic, cleaning and sanitation products have become increasingly more popular. Pfizer is…
A: Given that, X1 bar= 5.7, n= 20 And s1= 0.65 X2 bar= 6.2 standard deviation, s2= 1.3 Hypothesis:…
Q: Some people seem to believe that you can fix anything with duct tape. Even so, many were skeptical…
A: Given that,sample one, x1 =60, n1 =103, p1= x1/n1=0.5825sample two, x2 =88, n2 =101, p2=…
Q: Emma is interested in trying something new after completing her first statistics course. She is…
A: Given two different categories of study design.
Q: You are concerned that nausea may be a side effect of Tamiflu, but you cannot just give Tamiflu to…
A: (a) Denote μ as the true percentage of people experiencing nausea, among those who have flu and are…
Q: Betsy is interested in predicting how many 75-year-olds will develop Alzheimer’s disease and is…
A: a) we know that if the coefficient of determination of the regression equation is high then that…
Q: A large study used records from Canada’s national health care system to compare the effectiveness of…
A: Observational study is a study when researchers find results based on the observation and no…
Q: Recent research indicates that the effectiveness of antidepressant medication is directly related to…
A: Given: Data is provided in the question. We need to conduct one-way ANOVA.
Q: classes lead to better student outcomes. You have c ou have collected data on 22 students at SDSU.…
A: To calculate the 99% confidence interval for the slope parameter, we use the formula:CI = b₁ ±…
Q: The analgesic effects of music are well known, but most of the studies have been done with adults…
A: Given: The analgesic effects of music are well known, but most of the studies have been done with…
Q: I want to know if being an athlete or not would change the resuls to the donut vs. bagel study. I…
A: Given information isIt is a study of donut vs. bagel There are two…
Q: does the result indicate whether the treatment is effective?
A: Confidence interval is the maximum and minimum limit of the value in which at certain level,the…
Q: Read through this scenario and look at the data that was collected. State the null and all possible…
A: Provided ANOVA result with replication
Q: You are concerned that nausea may be a side effect of Tamiflu, but you cannot just give Tamiflu to…
A: Given Information: Claim: The percentage of those who experience nausea while having the flu and…
Q: When evaluating the effectiveness of a newly invented psychological treatment to people having…
A: The effectiveness of the new psychological treatment is to be evaluated. The AB design measures the…
Q: Amit Almor, a psychology researcher at the University of South Carolina, conducted a series of…
A: ANOVA table is: Source of variation SS df MS F Between treatments 3095.00 2…
Q: A researcher is testing whether patients benefit differently from psychoanalytic vs.…
A: Statistics is a branch of mathematics that deals with the collection, analysis, interpretation,…
Q: In the Preview for this Chapter, we discussed a study by McGee and Shevlin (2009) demonstrating that…
A: Test statistic: Here, M=4.53, µ=4, s=1.04, n=16, α=0.05 The test statistic is computed as follows:…
Q: Need help with this problem. It is believed that large doses of acetaminophen (the active…
A: From the given dataMargin of error =0,02Confidence interval =98%
Q: a. Choose the appropriate alternative hypothesis for the test. O At least one of the p; (i= 1, 2, 3)…
A: Since you have asked multiple questions, we will solve the first question for you . If you want a…
Would an observational study or an experiment be more appropriate for a medical research team that is trying to figure out if a new medicine is effective in treating migraines? Justify your response.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- You are concerned that nausea may be a side effect of Tamiflu, but you cannot just give Tamiflu to patients with the flu and say that nausea is a side effect if people become nauseous. However, past research indicates that about 30% of people who get the flu experience nausea, and you believe that the percentage of those who experience nausea while having the flu and taking Tamiflu will be greater than 30%, which would indicate that nausea is a side effect of Tamiflu.a) If you going to test this claim at the 0.05 significance level, what would be your null and alternative hypotheses?H0H0: H1H1: b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? left-tailed right-tailed two-tailedDiscuss the difference between a Type I error and a Type II error. Is it easier to commit one type of error than it is to commit another? Is one type of error more detrimental than another? Why or why not?What are some issues to consider if you are planning to use statistical analysis in your research? Select all that apply. Question 7 options: Collecting some statistics may require training on particular software or may even require expertise. You might need to acquire the data from another department in your agency or school, such as IT, and that can be time consuming. Software and expertise can be costly. How strong are your math skills?
- Dr. S. Oberman has the research hypothesis that drivers who have consumed one drink are actually slightly better (score higher on a driving test) than drivers who have had no alcohol. (One drink, she believes, makes them relaxed and not as nervous.) She tests this by having subjects take a standard driving test. We know that completely sober, college-student drivers score an average of 75 on this test, where high scores mean better driving. Dr. S. Oberman's null hypothesis is: [note: Ho means mu, the population mean according to the null hypothesis] Ho is equal to 0 Po is less than 0 Po is not known, nor can it be known Ho is equal to (or less than) 75 Po is greater than 75A two-factor study investigates the effects of self-esteem (low vs. high) and gender (males vs. females) on anxiety scores. The following data represents the means for each treatment condition. Low self-esteem High self-esteem Male 5 11 Female 10 3 The data shows that there is a self-esteem by gender interaction. Explain the self-esteem by gender interaction (include individual means in your explanation)According to the Pew Research Center, 14% of adults rate basketball as their favorite sport. Your boss believes the proportion may be lower among adults over age 65, and wants you to collect evidence to see if this is true. You take a survey of adults over age 65, and only 12 out of 120 of them rate basketball as their favorite sport. You would like to set �=0.05. Your boss tells you that your firm will base some expensive decisions on the results of your hypothesis test, so a higher standard of evidence for rejecting the null hypothesis is needed. What should you do? Group of answer choices Keep the significance level the same but collect more data Increase the significance level to 10% Reduce the significance level to 1% Throw out observations that look suspicious thanks
- Can you please answer all of the questions about the information provided. Background Previous studies have demonstrated the short-term efficacy of pharmacotherapy and behavior therapy for attention-deficit/hyperactivity disorder (ADHD), but no longer-term (ie, >4 months) investigations have compared these 2 treatments or their combination. A 1999 study conducted by MTA Cooperative Group conducted a multisite study designed to evaluate the leading treatments for ADHD. The Study A group of 425 children with ADHD Combined Type, aged 7 to 11 years, were assigned to 14 months of medication management (titration followed by monthly visits); intensive behavioral treatment (parent, school, and child components, with therapist involvement, gradually reduced over time); or the two combined. Outcomes were assessed in multiple domains before and during treatment and at the treatment endpoint (with the combined treatment and medication management groups continuing medication at all assessment…Cocaine addiction is hard to break. Addicts need cocaine to feel any pleasure, so perhaps giving them an antidepressant drug will help. An experiment assigned chronic cocaine users to take either an antidepressant drug called desipramine, lithium, or a placebo. Lithium is a standard drug to treat cocaine addiction. A placebo is a dummy drug, used so that the effect of being in the study but not taking any drug can be seen. Here are the results after three years. Desipramine Lithium Placebo Relapse No relapse 11 19 21 14 4 What proportion of subjects who did not relapse took Lithium? Round your answer to three decimal places.A hypothetical study looks at the effect of drinking alcohol on health. Across all genders and age groups, people who do not drink tend to be healthier on average than people who do drink. However, people who drink regularly are on average healthier than those people who have recently stopped drinking. Is it reasonable to conclude that for the sake of health, we should not start drinking, but if we have already started drinking alcohol, it is healthier to continue and not to stop?
- A major software company is considering a price increase on its most popular product. They are currently selling below their competitor’s price. Someone from the Brand team suggested they check consumer response before making a price increase. You are called into explain how this marketing research might be carried out. In terms of qualitative and quantitative options you tell them...BREAKFAST AND TEST SCORES 1 of 4 What type of test should this researcher use? Conventional wisdom says that eating a healthy breakfast can improve your health and your weight, but can it also affect your test scores? In order to test this, a school program convinces a group of students to skip breakfast one morning before taking a Basic English test. Eighteen students received breakfast before taking the test, and twenty-one students did not eat breakfast and recorded their performance on the English test. What type of research test should this researcher use? Their results are as follows:Rewrite the following sentence to remove its primary problem "We hypothesize that grade level has an effect on academic success."