In a case-control study, 317 patients suffering from endometrial cancer werematched individually with 317 other cancer patients in a hospital and the use ofestrogen in the six months prior to diagnosis was determined. Estrogen isassociated with several types of cancer. The findings are shown below:ControlsNo estrogen143180CasesEstrogenNo estrogenEstrogen6725i State the null and alternative hypothesisPerform the appropriate test of significanceii.b) In a genetics experiment, investigators looked at 300 chromosomes of a particulartype and counted the number of sister-chromatid exchanges on each. A Poissonmodel was hypothesized for the distribution of the number of exchanges. Wasthe hypothesis valid given the data below:Number of exchanges34.6.7.8.9.6.24425962444114Counts2.6.く

Name: In a case-control study, 317 patients suffering from endometrial canc
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: In a case-control study, 317 patients suffering from endometrial cancer werematched individually with 317 other cancer patients in a hospital and the use ofestrogen in the six months prior to diagnosis was determined. Estrogen isassociated with seve

Since you have asked multiple question, we will solve the first question for you. If youwant any…

Math

Statistics

In a case-control study, 317 patients suffering from endometrial cancer were matched individually with 317 other cancer patients in a hospital and the use of estrogen in the six months prior to diagnosis was determined. Estrogen is associated with several types of cancer. The findings are shown below: Cases Estrogen 67 25 Controls No estrogen 143 Estrogen No estrogen 180 i. State the null and alternative hypothesis ii. Perform the appropriate test of significance mO of a particulan

In a case-control study, 317 patients suffering from endometrial cancer were matched individually with 317 other cancer patients in a hospital and the use of estrogen in the six months prior to diagnosis was determined. Estrogen is associated with several types of cancer. The findings are shown below: Cases Estrogen 67 25 Controls No estrogen 143 Estrogen No estrogen 180 i. State the null and alternative hypothesis ii. Perform the appropriate test of significance mO of a particulan

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

Related questions

Q: students are tested again at the end of the year. Their test scores revealed an average improvement…

A: students are tested again at the end of the year. Their test scores revealed an average improvement…

Q: A simple random sample of size n 200 drivers with a valid driver's license is asked if they drive an…

A: Solution: Given information: n= 200 Sample size of drivers x = 122 drivers drive an American made…

Q: In their study of the effectiveness of cardiac catheterization, McClellan,McNeil, and Newhouse…

A: Introduction: The instrument used here is the difference in distance, to cardiac catheterization…

Q: Speed, size and strength are thought to be important factors in football performance. The paper…

A: From the provided information, The level of significance (α) = 0.01 Population mean (µ) = 110 kg…

Q: OxyContin The drug OxyContin (oxycodone) is used to treat pain, but it is dangerous because it is…

A: Solution:Given that,Level of significance = 0.05Sample size(x) = 52Total (n) =227

Q: Consider a dataset consisting of 610 males involved in a study of coronary heart disease. The…

A: Model Fit StatisticsIntercept and CovariatesCriterionIntercept onlyLog LikelihoodFull Log…

Q: Did the authors note any differences in gender with regard to fish consumption and inflammatory…

A: HI, as per our policy, we'll answer the first three subparts for you. Given:

Q: When more severely ill patients are treated with a particular therapy, which of the following…

A: when more severely ill patients are treated with a particular therapy. choose the result of the…

Q: randomized, double-blind, placebo-controlled study evaluated the effect of the herbal remedy…

A: For the echinacea group: Sample size (n1): 337 Mean severity score (x̄1): 6.0 Standard deviation…

Q: In a completely randomized experimental design, three brands of paper towels were tested for their…

A: Given: X Y Z 92 98 83 99 95 88 87 95 90 94 96 75 Level of significance = 0.05

Q: Researchers were interested in assessing the effects of a new treatment on seasonal affective…

A: Researchers were interested in assessing the effects of a new treatment on seasonal affective…

Q: A simple random sample of size n = 200 drivers with a valid driver's license is asked if they drive…

A: The answer to the question : "Do you drive an American-made automobile?" is either "Yes" or "No"…

Q: Are low-fat diets or low-carb diets more effective for weight loss? This question was addressed in…

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 37 of the…

Q: One-way ANOVA tests were performed to examine the effect of sleep deprivation (24, 36, 48 hours) on…

A: By definition the effect size η2, which explains the associated proportion of variance with one or…

Q: You have measured the blood hemoglobin concentrations in a random sample of 12 males aged 20-29…

A: Let, X: The blood hemoglobin concentrations in a males aged 20-29 years measured in mg/dL. X= […

Q: In a study of 420 comma 116 cell phone users, 128 subjects developed cancer of the brain or…

A: From the provided information, The level of significance (α) = 0.005 Population proportion (p) =…

Q: A researcher surveyed randomly selected Democrats and Republicans asking them what the number one…

A: 1. Here it is needed to test, whether there is a difference what Democrats and Republicans think…

Q: Consider a dataset consisting of 610 males involved in a study of coronary heart disease. The…

A: Model Fit StatisticsIntercept and CovariatesCriterionIntercept onlyLog LikelihoodFull Log…

Q: In a study of 420,124 cell phone users, 119 subjects developed cancer of the brain or nervous…

A: In a study of 420, 124 cell phone users, 119 subjects developed cancer of the brain or nervous…

Q: From the same cohort, all cases and 10 controls per case were chosen for analysis. The following…

A: Given : 10 controls per case were chosen for analysis.

Q: Whirling disease is a deadly disease that affects trout in Montana riversIn a follow-up to a 2006…

A: The relative risk of whirling disease for rainbow trout compared to brown trout can be calculated as…

Q: Consider the following 2 × 2 table from a hypothetical cohort study. Calculate the relative risk of…

A: Introduction: Relative risk is defined as the ratio of the probability of an event of interest in…

Q: In an experiment designed to test the output levels of three different treatments, the following…

A: Given that SST = 380, SSTR = 200, nT = 20

Q: An epidemiologist found five cases of “big toe cancer” in the Yukon Territory. Because there were…

A: Note: Since we are authorized to answer only up to 3 subparts, we are answering first three…

Q: A clinical trial is conducted comparing a new pain reliever for arthritis to a placebo.…

A: Given Information : A clinical trial is conducted comparing a new pain reliever for arthritis to a…

Q: The following data summarizes the results from a between subjects one-way ANOVA study comparing…

A: To determine if there are significant differences between the three groups using a one-way ANOVA, we…

Q: Part 3 of 4 Step 3: Find the p-value of the test statistic. %3D ANOVA Table SS df MS F Between…

A: ANOVA: The analysis of variance (ANOVA) is used to determine whether there are any statistically…

Q: For a two-factor ANOVA with two levels of factor A, two levels of factor B, and a separate sample of…

A: ANOVA with two levels of factor A, two levels of factor B, and a separate sample of n = 5…

Q: A random sample of 400 residents are asked if they are in favor of the proposed 10% vanity tax that…

A: It is given that n=400 and x=300.

Q: September 1995, we randomly assigned 104 asthma to one of three study groups in the of Inhaled…

A: Given: The box plot and data has given. To find the correct statement which summarize the height…

Concept explainers

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.

Topic Video

Question

In a case-control study, 317 patients suffering from endometrial cancer were
matched individually with 317 other cancer patients in a hospital and the use of
estrogen in the six months prior to diagnosis was determined. Estrogen is
associated with several types of cancer. The findings are shown below:
Controls
No estrogen
143
180
Cases
Estrogen
No estrogen
Estrogen
67
25
i State the null and alternative hypothesis
Perform the appropriate test of significance
ii.
b) In a genetics experiment, investigators looked at 300 chromosomes of a particular
type and counted the number of sister-chromatid exchanges on each. A Poisson
model was hypothesized for the distribution of the number of exchanges. Was
the hypothesis valid given the data below:
Number of exchanges
3
4.
6.
7.
8.
9.
6.
24
42
59
62
44
41
14
Counts
2.
6.
く

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

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Proportions$

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

Sleep apnea is a disorder in which there are pauses in breathing during sleep. People with this condition must wake up frequently to breathe. The article “Postoperative Complications in Patients With Obstructive Sleep Apnea Syndrome Undergoing Hip or Knee Replacement: A Case-Control Study” (R. Gupta, J. Parvizi, et al., Mayo Clinic Proceedings, 2001:897–905) reported that in a sample of 427 people 65 and over, 104 of them had sleep apnea. a) Find a 95% confidence interval for the proportion of those 65 and over who have sleep apnea. b) Find a 99% confidence interval for the proportion of those 65 and over who have sleep apnea. c) Find the sample size needed for a 95% confidence interval to specify the proportion to within ±0.03. d) Find the sample size needed for a 99% confidence interval to specify the proportion to within ±0.03.
PM Wed Nov 3 Stats Home Insert Draw View 8). Studies have shown that drivers who use cell phones while operating a motor passenger vehicle increase their risk of an accident. To quantify this risk, the New England Journal of Medicine (January 2, 2014) reported on the risk of a crash (or near crash) for both novice and expert drivers when using a cell phone. In a sample of 371 cases of novices using a cell phone while driving, 24 resulted in a crash (or near crash). In a sample of 1,467 cases of experts using a cell phone while driving. 67 resulted in a crash (or near crash). a). Find a 93% confidence interval for p, the true crash risk (probability) for novice drivers, also indicating the ME value. Answer: ME = b). Find a 93% confidence interval for p, the true crash risk (probability) for expert drivers, also indicating the ME value. Answer: гр, ME =
Three treatments are compared for the treatment of in a between-subjects study. The following table of results were created to compare the three different treatment options. Treatment 1 Treatment 2 Treatment 3 n = 5 n = 5 n = 5 M = 2 M = 5 M = 8 N = 15 T = 10 T = 25 T = 40 G = 75 SS = 64 SS = 80 SS = 96 ΣX2 = 705 Use an ANOVA with α = .05 to determine whether there are any significant differences among the three treatment means. Calculate η2 as a measure of effect size. State the results as they would appear in a research report.
In a study of 420,141 cell phone users, 134 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected by cell phone use. That is, test the claim that cell phone users develop cancer of the brain or nervous system at a rate that is different from the rate of 0.0340% for people who do not use cell phones. Because this issue has such great importance, use a 0.001 significance level. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution. Which of the following is the hypothesis test to be conducted? Ho: p 0.00034 D. Ho: p0.00034 H₁: p = 0.00034 F. Ho: p > 0.00034 H₁: p = 0.00034
Acne is a common skin disease that affects most adolescents and can continue into adulthood. A study compared the effectiveness of three acne treatments and a placebo, all in gel form, applied twice daily for 12 weeks. The study's 517 teenage volunteers were randomly assigned to one of the four treatments. Success was assessed as clear or almost clear skin at the end of the 12 week period. The results of the study can be seen in the table below. Using the appropriate statistical test, determine if there is significant evidence that the four treatments perform differently. If so, how do they compare.
A simple random sample of size n = 200 drivers with a valid driver's license is asked if they drive an American-made automobile. Of the 200 drivers surveyed, 118 responded that they drive an American-made automobile. Determine if a majority of those with a valid driver's license drive an American-made automobile at the a = 0.05 level of significance. ..... What type of variable is "drive an American-made automobile, or not"? A. Qualitative with two possible outcomes B. Discrete C. Continuous…
From the same cohort, all cases and 10 controls per case were chosen for analysis. The following results were observed. Serum Level of Vitamin D Incident Cases of MS Healthy Individuals Above 40 ng per ml 40 20-40 ng per ml 4 40 Below 20 ng per ml 4 20 What is the odds ratio for individuals with serum levels of vitamin D of 20-40 ng per ml? O 4.0 О 30 O 1.0 O 2.0 2.
A researcher surveyed randomly selected Democrats and Republicans asking them what the number one concern should be for the president of the United States. The results of the survey are shown below. Is there evidence to conclude that there is a difference in what Democrats and Republicans think is the most important? Economy Foreign Affairs Family Values Environment Other Democrats 82 58 80 70 44 Republicans 106 78 94 57 38 What can be concluded at the αα = 0.05 significance level? What is the correct statistical test to use? Goodness-of-Fit Independence Homogeneity Paired t-test The test-statistic for this data = (Please show your answer to three decimal places.) The p-value for this sample = (Please show your answer to four decimal places.) The p-value is αα
A clinical trial is run to assess the effects of different forms of regular exercise on HDL levels in persons between the ages of 19 and 29. Participants in the study are randomly assigned to one of three exercise groups—weight training, aerobic exercise, or stretching/yoga—and instructed to follow the program for 8 weeks. Their HDL levels are measured after 9 weeks and are summarized below. Exercise Group N Mean Std Dev Weight Training 20 49.7 10.2 Aerobic Exercise 20 43.1 11.1 Stretching/Yoga 20 57.0 12.5 Complete the following ANOVA table. Source of Error Sums of Squares df Mean Squares F Between Within 6157.32 Total 1.Write the hypotheses to be tested. 2. Write the decision rule. Please find the F for the closest df 3. What is the conclusion?
For a randomized block ANOVA, suppose that the treatment Factor T has four levels and the blocking Factor B has eight levels. Given that SSTR = 900, SSBL = 700, and SSE = 210, construct the randomized block ANOVA table for the data.
Use an ANOVA with ? = 0.05 to determine whether there are any significant differences among the three treatment means. If results are significant what is the effect size? Report results in APA format A developmental psychologist is examining the development of language skills from age 2 to 4. Three different groups are obtained, one for each age, with n = 16 children in each group. Each child is given a language-skills assessment test. The resulting data were analyzed with an ANOVA to test for mean differences between age groups. The results of the ANOVA are presented in the following table. Fill in all missing values. N = , n = , K = Source SS df MS F Between Txt 20 Within Txt Total 200