### Statistical Analysis of Acid Reflux TreatmentA study evaluates the effectiveness of a drug designed to reduce stomach acid and heal esophageal damage from acid reflux. The manufacturer claims that over 94% of patients using the drug recover within eight weeks. A clinical trial with 224 patients reports 213 recoveries after eight weeks. We will test the manufacturer’s claim using a significance level of α = 0.1.#### Resources:- [Standard Normal Distribution Table (Page 1)](link)- [Standard Normal Distribution Table (Page 2)](link)#### Hypothesis TestingTo determine if the sample data supports the manufacturer's claim, follow these steps:1. **Verify Sample Size Conditions:** - Use the formula $ n p_0 (1 - p_0) \geq 10 $ to check if the sample size conditions for hypothesis testing are met. - The problem prompts require calculating and rounding these values to one decimal place.2. **Sample Size Considerations:** - Confirm if the sample size is less than 5% of the population size. This affects whether the results can be considered statistically valid.3. **Assessment:** - Properly fill in the calculations regarding $ n p_0 (1 - p_0) $, sample size, and population percentage to assess if the hypothesis testing requirements are met.Ensure you follow proper statistical methods to draw conclusions from the given data.

The hypothesized proportion value p0 is 0.94.

Answered: A certain drug can be used to reduce…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The MANOVA is very sensitive to deviations from normality; therefore, the significance for this test is typically defined as
A certain drug can be used to reduce the acid produced by the body and heal damage to the esophagus due to acid reflux. The manufacturer of the drug claims that more than 94% of patients taking the drug are healed within 8 weeks. In clinical trials, 212 of 221 patients suffering from acid reflux disease were healed after 8 weeks. Test the manufacturer's claim the x = 0.05 level of significance. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). Because npo (1-Po) 10, the sample size is (Round to one decimal place as needed.) What are the null and alternative hypotheses? Ho: versus H₁: (Type integers or decimals. Do not round.) Determine the test statistic, Zo Zo = (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice. (Round to two decimal places as needed.) OA. Zα/2 = ± OB. Zα = ▼5% of the population…
A survey was conducted two years ago asking college students their top motivations for using a credit card. You think the distribution has changed. You randomly select 425 college students and ask each one what the top motivation is for using a credit card. Can you conclude that there has been a change in the distribution? Use a=0.10. 1. Determine the critical value, and the rejection region. 2. Calculate the test statistic.
Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of illness such as gout , leukemia or lymphoma. Over a period of months an adult male patient has taken even blood tests for uric acid. The mean concentration was x =5.30mh/dL. The distribution of uric acid in healthy adult males can be assumed to be normal, with standard deviation =1.95mg/dL. Find a 95% confidence interval for the population mean concentration of uric acid in this patients blood What is margin of error? Lower limit? Upper limit? And margin of error?
The heights of the 430 Candidates for the Elite Military Unit have an approximate normal distribution with mean, μ = 79 inches and a standarddeviation, σ = 3.89 inches. For the height of 77 inches , calculate the z-score and interpret it using a complete sentence.
What does it mean for a test result to be statistically significant? Describe the relationship between alpha level, critical regions, and "p"
The dean of a business school claims that the average starting salary of its graduates is more than 85 (in $000’s). It is known that the population standard deviation is 10 (in $000’s). Sample data on the starting salaries of 64 randomly selected recent graduates yielded a mean of 88(in $000s). What is the critical value for the rejection region if the level of significance is 5%? 1.80 1.60 1.65 1. 85 2.00
According to a survey conducted by the Association for Dressing and Sauces, 85% of American adults eat salad at least once a week. A nutritionist suspect that the percentage is higher that this. She conducts a survey of 200 American adults an finds that 171 of them eat salad at least once a week. Conduct the appropriate test that addresses the nutritionist's suspicions. Use the a = 0. 1 level of significance. What is the p-value? 0.85 0.855 0.1980 0.4215
For an indenpendent- measures ANOVA comparing three treatments with a sample of n=5 in each treatment, what is the critical value for the F-ratio using a=.05?
Oral N-acetylcysteine (NAC) exerts a beneficial action in chronic bronchitis by reducing the number of exacerbations. Bontognali et al. [1] conducted a randomized, double-blind study to measure the effectiveness of NAC in the long-term treatment of patients with chronic bronchitis and mild airway obstruction. The response is the number of acute exacerbations per month. The mean value and standard deviation for both experimental and placebo group are given below: Placebo Sample size 59 Mean Standard Deviation 0.15 Sample size Standard Deviation 0.19 70 0.16 To test if there is a statistically significant differences between NAC and placebo in number of observed exacerbations, the author plans to conduct a hypothesis testing at 10% level of significance. Answer the following questions according to the study: NAC Mean 0.11
A clinical trial is planned to compare an experi- mental medication designed to lower blood pressure to a placebo. Before starting the trial, a pilot study is conducted involving 7 participants. The objective of the study is to assess how systolic blood pressure changes over time untreated. Systolic blood pres- sures are measured at baseline and again 4 weeks later. Is there a statistically significant difference in blood pressures over time? Run the test at a 5% level of significance. Baseline: 120 145 130 160 152 143 126 4 Weeks: 122 142 135 158 155 140 130

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS