Question

Asked Nov 23, 2019

1 views

Current data provided by the 2010 census indicates that the prevalence of breast cancer in the US is still on the rise, while the mortality rates have slightly declined over time. A researcher at a local health department conducts an observational study to determine the prevalence in the particular region. The researcher gathers 2,168 participants and confirms 246 cases of breast cancer in her sample.

A) Assuming the census data indicates a national prevalence of 23.5%, conduct a formal statistical test to determine if the prevalence calculated in the researcher’s study differs significantly from the national prevalence level at the alpha value of 0.05.

B) Interpret your results from the hypothesis test conducted in part A).

Step 1

A)

Given Data

Step 2

**Formulation of Hypotheses:**

The null hypothesis is:- prevalence calculated in the researcher’s study does not differs from the national prevalence level

*H*0: *p* = 0.235

The alternative hypothesis is:- prevalence calculated ...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: You read in a U.S. Census Bureau report that a 90% confidence interval for the median income in 2012...

A: It is given that 90% confidence interval for the median income in 2012 of American households was $5...

Q: the following MINITAB output displays presents the results of a hypothesis test for the difference μ...

A: From the provided information, consider µ1 represents the population mean of dataset A and µ2 repre...

Q: A test of H0: μ = 53 versus H1: μ ≠ 53 is performed using a significant level of α = 0.01. The P-va...

A: Type I error (α):The Type I error is committed, if the null hypothesis is rejected, when it might ac...

Q: Treat the number of months X after January 1 that someone is born as uniformly distributed from 0 to...

A: 1.Let X denotes the number of months follows a uniform distribution over the range from 0 to 12.The ...

Q: A survey of nonprofit organizations showed that online fundraising has increased in the past year. B...

A: Hypotheses:Null hypothesis:H0: µ =70Alternative hypothesis:H1: µ > 70Since the alternative hypoth...

Q: The mean income per person in the United States is $44,000, and the distribution of incomes follows ...

A: Part (a):Null and alternative hypothesis:The hypotheses to be tested are:H0: μ ≤ 44,000, that is, th...

Q: A study of the effects of color on reducing anxiety compared anxiety test scores of participants who...

A: It is assumed that samples are drawn from the normal population. The population standard deviations ...

Q: This data is from a sample. Calculate the mean, standard deviation, and coefficient of variation 24....

A: The coefficient of variation (CV) is defined to be

Q: The average final exam score for the statistics course is 81%. A professor wants to see if the avera...

A: 1) The t-test :Here, the sample size is small and sample standard deviation is unknown. Therefore, t...