A study of breast cancer in postmenopausal women included 500 cases of invasive breast cancer and500 subjects without breast cancer matched to the cases by age and location of residence. Thefollowing data were collected for these subjects about their use of estrogen replacement therapy(ERT). Based on these data, answer the following questions.STATUSCASESCONTROLSEstrogen Replacement Therapy250100No ERT2504002. What is the parameter of interest to be estimated in the study?O Difference in PrevalenceO Odds RatioO Relative RiskO Difference in Incidence

Parameter : Parameters are numbers that summarize the data for an entire population. P

Answered: A study of breast cancer in…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A homeopathic drug company developed a new drug designed to prevent colds. The company claims there is no difference between the effectiveness for men and women. To test the claim they chose a simple random sample of 100 women and 150 men who participated in the trial.At the end of the study, 56% of the women caught a cold, and 40% of the men caught a cold. Based on these findings we are testing to see if there is a difference in the effectiveness for women and men.a) Define the parameter(s) of interest.b) State the Hypotheses.c) Find the value of the relevant sample statistic using correct notation:_________________________ Based on the randomization distribution below, what is the p-value ____________________
According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 2007 were for identity theft. In that year, assume some state had 534 complaints of identity theft out of 1960 consumer complaints. Do these data provide enough evidence to show that that state had a higher proportion of identity theft than 23%? Test at the 6% level.P: PARAMETER What is the correct parameter symbol for this problem? What is the wording of the parameter in the context of this problem? H: HYPOTHESES Fill in the correct null and alternative hypotheses: ASSUMPTIONS Since information was collected from each object, what conditions do we need to check? Check all that apply. np≥10np≥10 n≥30n≥30 or normal population. σσ is known. σσ is unknown. N≥20nN≥20n n(1−p)≥10
According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 2007 were for identity theft. In that year, assume some state had 544 complaints of identity theft out of 1950 consumer complaints. Do these data provide enough evidence to show that that state had a higher proportion of identity theft than 23%? Test at the 9% level.P: PARAMETER What is the correct parameter symbol for this problem? What is the wording of the parameter in the context of this problem? H: HYPOTHESES Fill in the correct null and alternative hypotheses: H0:H0: HA:HA: A: ASSUMPTIONS Since information was collected from each object, what conditions do we need to check? Check all that apply. n(1−pˆ)≥10n(1-p̂)≥10 n≥30n≥30 or normal population. σσ is unknown. σσ is known. n(1−p)≥10n(1-p)≥10 np≥10np≥10 N≥20nN≥20n n(pˆ)≥10n(p̂)≥10 Check…
While it is known from data on national sales that 25% of cars sold are sedans, a survey in one city indicated that 21% of individuals owned one. Identify which of the numbers is a parameter and which is a statistic.
Assume that last year in a particular state with 700000 children there were 1552 children out of 31500 in a random sample who were diagnosed with Autism Spectrum Disorder. Nationally, 1 out of 88 children are diagnosed with ASD. Is there sufficient data to show that the incident rate of ASD is higher in that state than nationally? Test at the 7% level.P: PARAMETER What is the correct parameter symbol for this problem? What is the wording of the parameter in the context of this problem? H: HYPOTHESES Fill in the correct null and alternative hypotheses: The value of p on this one is a fraction....leave it exact. H0:H0: HA:HA: A: ASSUMPTIONS Since information was collected from each object, what conditions do we need to check? Check all that apply. n(1−pˆ)≥10n(1-p̂)≥10 σσ is unknown. N≥20nN≥20n np≥10np≥10 σσ is known. n(1−p)≥10n(1-p)≥10 n≥30n≥30 or normal population.…
The director of an obesity clinic in a large northwestern city believes that drinking soft drinks contribute to obesity in children. To determine whether a relationship exists between these two variables, she conducts the following pilot study. Eight- 12-year-old male volunteers are randomly selected from children attending a local junior high school. Parents of the children are asked to monitor the number of soft drinks consumed by their child over a one week period. The children are weighed at the end of the week and their weights converted into body mass index (BMI) values. The BMI is a common index used to measure obesity and takes into account both height and weight. An individual is considered obese if they have a BMI value 30. The following data or collected: child. # of soft drinks consumed BMI 1 3 20 2 1 18 3…
An urban community wants to show that the incidence of breast cancer is higher in their locality than in a neighboring rural area. (PCB levels were found to be higher in the soil of the urban community). If you find that in the urban community 20 out of 200 adult women have breast cancer and that in the rural community 10 out of 150 adult women have it, could you conclude, at a significance level of 0.05, that breast cancer is more prevalent in the urban community?1. The parameter of interest is:2. The hypotheses for this test are:3. The calculated test statistic is:4. The critical region is:5. Draw the critical region (make decision):6. It can be concluded that:
In 2001, the polls found that 81% of American adults believed that there was a conspiracy in the death of President Kennedy. Assume a recent poll asked 1940 American adults if they believe there was a conspiracy in the assassination and it found that 1519 believe there was a conspiracy. Does the data show that the proportion of Americans who believe in this conspiracy is now lower? Test at the 6% level.P: PARAMETER What is the correct parameter symbol for this problem? What is the wording of the parameter in the context of this problem? H: HYPOTHESES Fill in the correct null and alternative hypotheses: H0:H0: HA:HA: A: ASSUMPTIONS Since information was collected from each object, what conditions do we need to check? Check all that apply. n(1−pˆ)≥10n(1-p̂)≥10 n≥30n≥30 or normal population. np≥10np≥10 n(1−p)≥10n(1-p)≥10 N≥20nN≥20n σσ is known. n(pˆ)≥10n(p̂)≥10 σσ is unknown.…
After inspecting all of the 55,000 kg of meat stored at the Wurst Sausage Company, it was found that 45,000 kg of the meat was spoiled. Parameter or Statistic?
During the spring of 1999, many fuel storage facilities in Serbia were destroyed by bombing. As a result, significant quantities of oil products were spilled and burned,resulting in soil pollution. The article “Mobility of Heavy Metals Originating from Bombing of Industrial Sites” (B. Škrbić, J. Novaković, and N. Miljević, Journal of Environmental Science and Health, 2002:7–16) reports measurements of heavy metal concentrations at several industrial sites in June 1999, just after the bombing, and again in March of 2000. At the Smederevo site, on the banks of the Danube River, eight soil specimens taken in 1999 had an average lead concentration (in mg/kg) of 10.7 with a standard deviation of 3.3. Four specimens taken in 2000 had an average lead concentration of 33.8 with a standard deviation of 0.50. Find a 95% confidence interval for the increase in lead concentration between June 1999 and March 2000.
According to the World Bank’s year 2015 estimates of the Poverty Overview, 10% of the world population lived on less than US $1.90 a day. Angela, a development economist, wants to conduct a comparative study in her local community of the Bronx, New York. She randomly selects 200 individuals from the Bronx and finds that 0% of the sample is living below $1.90 a day. Using this information, clearly identify the parameter and statistic. Using this information, the parameter is ______ and statistic is _______ respectively. Select one: a. 10%, 200 b. $1.90, 200 c. 10%, 0% d. 0%, 10%
The null hypothesis states that there is no difference between a parameter and a specific value, or that there is no difference between two parameters.

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