A double-blind, randomized comparative experiment compared the effect of the drug lorcaserin and a placebo on weight loss in overweight adults. All subjects also underwent diet and exercise counseling. The study reported that after one year, patients in the lorcaserin group had an average weight loss of 5.8 kilograms (kg), while those on the placebo had an average weight loss of 2.2 kg (P < 0.001). Select the most suitable sentence that describes the situation. It is impossible to describe the situation. None of the options are correct. These results mean that there is good reason to think that placebo works. These results mean that there is good reason to think that lorcaserin works.

A double-blind, randomized comparative experiment compared the effect of the drug lorcaserin and a placebo on weight loss in overweight adults. All subjects also underwent diet and exercise counseling. The study reported that after one year, patients in the lorcaserin group had an average weight loss of 5.8 kilograms (kg), while those on the placebo had an average weight loss of 2.2 kg (P < 0.001). Select the most suitable sentence that describes the situation. It is impossible to describe the situation. None of the options are correct. These results mean that there is good reason to think that placebo works. These results mean that there is good reason to think that lorcaserin works.

Name: Help please! A double-blind, randomized comparative experiment compare
Uploaded: 2024-03-20T07:07:37.000Z
Channel: Bartleby
Description: Help please! A double-blind, randomized comparative experiment compared the effect of the drug lorcaserin and a placebo on weightloss in overweight adults. All subjects also underwent diet and exercise counseling. The study reported that after one ye

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

See similar textbooks

Related questions

Q: Certain private water utilities in South Carolina charge a variable rate for the drinking water they…

A: From the given information The linear regression equation is Y = 23.2 + 7.67 x

Q: An inventor suggested in the nineteenth century that the letter "t" made up 8% of the English…

Q: Factor the expression using the common factor 4 -12x + 2.4y - 48 Drag a value or operation/sign to…

Q: The National ASsessment of Educational Progress (NAEP) includes a mathematics test for eighth-grade…

A: The standard deviation of a data set is a calculated number that tells you how close, or far the…

Q: For a large lecture class, a professor decides to make his class notes available on the Internet.…

A: In statistics, population is a aggregate of animate, inanimate, or objects under study. Population…

Q: 2. In this question we will consider the game Nim 4, played between Alice and Bob. In Nim 4, we…

A: Given:Consider the game Nim 4, played between Alice and Bob. In Nim 4, we start with n stones. A…

Q: . Let b ^= (²8) A C be a nonsingular matrix (det A # 0). (a) Show that, if a = 0, then b ‡ 0 and c =…

Q: Let f (x) = x²+ 4x. Find the limit lim f(4+h)-f(4) h-0 h The limit is

Q: The correlation coefficient for these data is:

A: The correlation coefficient r of the data can be obtained by taking the square root of coefficient…

Q: Ive the following PDE with nonhomogeneous boundaries: PDE UttUxx = 0, BCs u(0, t) = sin(t), u(L, t)…

Q: The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard…

A: Let "X" be the monthly utility bills. Draw the normal curve and shade the area to the left of…

Q: Note that the only entry in a 1 x 1 matrix is on the diagonal. The upper-diagonal of a matrix are…

Q: Find the z-score that has 48.4% of the distribution's area to its left. The Z-score is (Round to two…

A: The formula of the Z-score is,Where,X denotes the raw data point,µ denotes the population mean,σ…

Q: There seems to be a clear relationship between the prevailing mortgage interest rates x and the…

A: From the given information, the r2 value is 0.49.

Q: The least-squares regression line is: the line that makes the sum of the squares of the vertical…

A: In the least-squares regression, the best-fit regression line reduces the difference between the…

Q: The data below shows the selling price (in hundred thousands) and the list price (in hundred…

A: Use EXCEL to construct the scatter plot. EXCEL procedure: Go to EXCEL Go to Insert menu…

Q: Consider the following system: 2х + 3у — 2х х — 2у + 32 - 2y + 4z 1 1 %3D 2x – 2 (a) Find the…

A: The given equations are 2x + 3y - 2z = 1 x - 2y + 3z = -1 2x - 2y + 4z = -2 to find the parametric…

Q: Suppose a local university researcher wants to build a linear model that predicts the freshman year…

A: Given : Suppose a local university researcher wants to build a linear model that predicts the…

Q: In an experiment for a new drug, patients were randomly assigned either to a placebo or to the…

A: Given Data: Factors considered: Pill, skin, Nasal mist

Q: Suppose the math department chair at a large state university wants to estimate the average overall…

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

Q: Suppose a local university researcher wants to build a linear model that predicts the freshman year…

A: Given: x = 1501.717708 y = 3.300318 Sx = 104.141305 Sy = 0.451901 r = 0.503202 Formula Used: Slope b…

Q: In many fast food restaurants, there is a strong correlation between a menu item's fat content…

A: Solution: Given information: r= 0.979 Correlation between x and yx= 40.35 gram Mean of xy=…

Q: The Stanford-Binet Intelligence Scale is an intelligence test, which, like many other IQ tests, is…

A: The margin of error for (m) is obtained below: From the given information, the value of mean is 100…

Q: If f (x) = x – 4.5x – 12x + 20, find analytically all values of x for which f' (x) = 0. Enter your…

A: Derivative of a function at some points becomes zero means that the slope of the tangent to the…

Q: A regression between foot length (response variable in cm) and height (explanatory variable in…

A: Given the regression equation between foot length and height for 42 students. (a) Given that one…

Topic Video

Question

Help please!

A double-blind, randomized comparative experiment compared the effect of the drug lorcaserin and a placebo on weight
loss in overweight adults. All subjects also underwent diet and exercise counseling. The study reported that after one year,
patients in the lorcaserin group had an average weight loss of 5.8 kilograms (kg), while those on the placebo had an average
weight loss of 2.2 kg (P < 0.001).
Select the most suitable sentence that describes the situation.
It is impossible to describe the situation.
None of the options are correct.
These results mean that there is good reason to think that placebo works.
These results mean that there is good reason to think that lorcaserin works.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Research Design Formulation$

Learn more about

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

A recent study on the effects of Tamiflu looked into whether the antiviral medication can reduce the duration of the flu or not. To test this, researchers selected sample of 42 individuals recently diagnosed with the flu. Twenty-one of these individuals were given a placebo, and their average flu durations was 12.6 days (SD = 1.88). The remaining 21 subjects were given Tamiflu, and their average flu duration was 11.4 days (SD = 1.58). Did Tamiflu make reduce the duration of the flu? What is the effect size for this difference? state the null and alternavive hypthesis, aplha level of 0.05 please text the null hypthesis and draw the rejction region
A double-blind randomized experiment compared the effects of the drug Lorcaserin and a placebo on weight loss in overweight adults. All subjects were also required to undergo diet and exercise counseling. The study involved 1000 participants where half of them would take Lorcaserin and half the placebo. The researchers found that after a year the treatment group had an average weight loss of 5.8 kg while the placebo group had an average weight loss of 3.9 carmona, kg. Based on this information researchers need to decide if Locarserin can be a possible treatment for weight loss. a. What would be a Type I error in this context? Your answer should consist of both the researchers’ decision and what the reality is. b. What would be a Type II error in this context? Your answer should consist of both the researchers’ decision and what the reality is.
A pharmaceutical company is testing a new drug for a rare disease. In a clinical trial, 1000 patients with the disease were randomly assigned to receive either the new drug or a placebo. After one year, it was found that 60% of the patients who received the new drug experienced improvement, compared to only 40% of those who received the placebo. Is the difference in improvement rates statistically significant? Provide your rationale.
A recent study investigated whether the number of positive health behaviors (e.g., exercising, eating healthy) is predictive of a person's score on a happiness index, such that as positive health behaviors go up, happiness goes up. The results from the study, which was conducted with 12 people, were as follows: r = 0.63 and SSY = 56.0. What is the MSregression? What is the MSresidual? What is the calculated test statistic? Given the value of your calculated test statistic and your critical test statistic, do you reject the null?
Female college student participation in athletics has increased dramatically over the past few decades. Sports medicine providers are aware of some unique health concerns of athletic women, including disordered eating. A study compared disordered-eating symptoms and their causes for collegiate female athletes (in lean and non lean sports) and nonathletes. The sample mean of the body dissatisfaction assessment score was 13.4 (s=7.9) for 15 lean sports athletes (those sports that place value on leanness, including distance running, swimming, and gymnastics) and 7.4 (s=5.8) for the 67 non-lean athletes. Assume equal population standard deviations. Find the standard error for comparing the means. Construct a 95% confidence interval for the difference between the mean body dissatisfaction for lean sport athletes and non lean sport athletes. Interpret.
It is common for baseball pitchers to use stretching to prepare for a game. But does this make a difference? The authors of a paper on the effects of stretching in baseball carried out an experiment to compare two different types of stretching and a control treatment consisting of no stretching. Participants were adult males with varying levels of baseball throwing experience and who were not professional or collegiate baseball players. Participants in the two stretching treatments went through a warm-up that included 8 minutes of stretching. Each participant (all three groups) then threw 10 pitches, and the average speed (km/hour) was calculated. (a) Explain why it is important that the participants be assigned at random to the three different treatment groups (Stretching Method 1, Stretching Method 2, and No Stretching). Random assignment ensures that our experiment systematically favors one experimental condition over all others and attempts to create experimental groups that are as…
In this study, ten combat veterans undergoing treatment for PTSD were randomly sampled from a local VA hospital in a study designed to test the efficacy of an anti-anxiety medication in reducing the symptoms of PTSD. Based on clinical animal trials, the researchers predict that the drug should reduce symptoms. t= 1.63, df=9, p=0.064, d= 0.529. Before: M= 48.100, SD=1.370, SE=0.433 After: M= 47.000, SD= 1.491, SE= 0.471 My hypotheses are; H0: μbefore ≤ μafter. H1: μbefore > μafter A. State your findings in APA format: B. How would you explain these findings to someone who has never taken a statistics class? In other words, use clear direct, non-jargon language to explain the results:
Does heavy cell phone use affect brain activity? There is some concern about possible negative effects of radiofrequency signals delivered to the brain. In a randomized matched-pairs study, 47 healthy participants had cell phones placed on the left and right ears. Brain glucose metabolism (a measure of brain activity) was measured for all participants under two conditions: with one cell phone turned on for 50 minutes (the “on” condition) and with both cell phones off (the “off” condition). The amplitude of radio frequency waves emitted by the cell phones during the “on” condition was also measured. Is this an example of “paired-samples” or “independent samples”? The investigators were interested in seeing whether average brain glucose metabolism was different based on whether the cell phones were turned on or off. State the null and alternative hypotheses for this test. Suppose that the mean of differences ? is 0.8, ignoring the unit for now, and the standard deviation of the…
A double-blind, randomized comparative experiment compared the effect of the drug lorcaserin and a placebo on weight loss in overweight adults. All subjects also underwent diet and exercise counseling. The study reported that, after one year, patients in the lorcaserin group had an average weight loss of 5.8 kilograms (kg), while those on the placebo had an average weight loss of 2.2 kg (P < 0.001). Explain to someone who knows no statistics why these results mean that there is good reason to think that lorcaserin works. Include an explanation of what P < 0.001 means.
Recall that small effects may be statistically significant if the samples are large. A study of small-business failures looked at 153 food-and-drink businesses. Of these, 107 were headed by men and 46 were headed by women. During a three-year period, 17 of the men's businesses and 7 of the women's businesses failed. (a) Find the proportions of failures for businesses headed by men (sample 1) and businesses headed by women (sample 2). These sample proportions are quite close to each other. p̂men = p̂women = Give the P-value for the z test of the hypothesis that the same proportion of women's and men's businesses fail. (Use the two-sided alternative.) The test is very far from being significant. (Round your test statistic to two decimal places and your P-value to four decimal places.) z = P-value = (b) Now suppose that the same sample proportions came from a sample of 30 times as large. That is, 210 out of 1380 business headed by women and 510 out of 3210 businesses…
As men age, their testosterone levels gradually decrease. This may cause a reduction in energy, an increase in fat, and other undesirable changes. Do testosterone supplements reverse some of these effects? A study in the Netherlands assigned 237 men aged 60 to 80 with low or low-normal testosterone levels to either a testosterone supplement or a placebo. Why is it necessary to include a control group in this experiment? Every experiment needs a control group in order to make proper comparisons between treatments. A control group is necessary to balance the effects of other variables among the treatment groups. A control group is necessary so any differences in the effects of the treatments can be distinguished from chance differences between the groups. A control group helps avoid confounding and reduces variability in the response variable. A control group is used to provide a baseline for comparing the effects of other treatments.
A randomized, double-blind, placebo-controlled study evaluated the effect of the herbal remedy Echinacea purpurea in treating upper respiratory tract infections in 2- to 11-year olds. Each time a child had an upper respiratory tract infection, treatment with either echinacea or a placebo was given for the duration of the illness. One of the outcomes studied was “severity of symptoms.” A severity scale based on four symptoms was monitored and recorded by the parents of subjects for each instance of upper respiratory infection. The peak severity of symptoms in the 337 cases treated with echinacea had a mean score of 6.0 (standard deviation 2.3). The peak severity of symptoms in the placebo group (np = 370) had a mean score of 6.1 (standard deviation 2.4). Test the mean difference for significance using an independent t-test. Discuss your findings