Question

A study investigated whether regular mammograms resulted in fewer deaths from breast cancer over a period...

A study investigated whether regular mammograms resulted in fewer deaths from breast cancer over a period of 15 years. Among 30,579 women who never had​ mammograms, 191 died of breast​ cancer, while only 141 of 30,152 who had undergone screening died of breast cancer. ​a) Do these results suggest that mammograms may be an effective screening tool to reduce breast cancer​ deaths? ​b) If your conclusion is​ incorrect, which type of error did you​ commit?

Determine the test statistic.

z= __? ​(Round to two decimal places as​ needed.)

Find the​ P-value.

P=___?  ​(Round to four decimal places as​ needed.)

What is the result of this hypothesis test with a level of significance of 0.05​?

A. Reject the null hypothesis because there is not sufficient evidence to support the claim that screening reduces the proportion of deaths.

B. Do not reject the null hypothesis because there is not sufficient evidence to support the claim that screening reduces the proportion of deaths.

C. Reject the null hypothesis because there is sufficient evidence to support the claim that screening reduces the proportion of deaths.

D. Do not reject the null hypothesis because there is sufficient evidence to support the claim that screening reduces the proportion of deaths.

​

b) Determine the type of error committed if your conclusion is incorrect.

A. This cannot be determined without analysis of an actual error.

B. A Type II error could occur.

C. A Type Upper I error could occur.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The National Cancer Institute conducted a 2-year study to determine whether cancer death rates for areas...
The National Cancer Institute conducted a 2-year study to determine whether cancer death rates for areas near nuclear power plants are higher than for areas without nuclear facilities. A spokesperson for the Cancer Institute said, "From the data at hand, there was no convincing evidence of any increased risk of death from any of the cancers surveyed due to living near nuclear facilities.” (1 points for each)    Let p denote the proportion of the population in areas near nuclear...
The National Cancer Institute conducted a 2-year study to determine whether cancer death rates for areas...
The National Cancer Institute conducted a 2-year study to determine whether cancer death rates for areas near nuclear power plants are higher than for areas without nuclear facilities. A spokesperson for the Cancer Institute said, "From the data at hand, there was no convincing evidence of any increased risk of death from any of the cancers surveyed due to living near nuclear facilities.” (1 points for each)    Let p denote the proportion of the population in areas near nuclear...
You are conducting a study to see if the proportion of women over 40 who regularly...
You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly less than 0.24. You use a significance level of ?=0.05.       H0:p=0.24       H1:p<0.24 You obtain a sample of size n=536 in which there are 123 successes. What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... less than (or equal to) ?? or greater than ?? This p-value leads to a decision...
You are conducting a study to see if the proportion of women over 40 who regularly...
You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly less than 0.84. You use a significance level of α=0.05α=0.05.       H0:p=0.84H0:p=0.84       H1:p<0.84H1:p<0.84 You obtain a sample of size n=161n=161 in which there are 122 successes. What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... less than (or equal to) αα greater than αα This p-value leads to a decision to......
You are conducting a study to see if the proportion of women over 40 who regularly...
You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly different from 0.49. You use a significance level of α=0.002α0.002.       H0:p=0.49H0p0.49       H1:p≠0.49H1p0.49 You obtain a sample of size n=318n318 in which there are 182 successes. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The...
Question 3 You are conducting a study to see if the proportion of women over 40...
Question 3 You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly different from 0.12. You use a significance level of α=0.05.       H0:p=0.12       H1:p≠0.12 You obtain a sample of size n=229 in which there are 23 successes. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value...
One study found that 52% of women with breast cancer experience optimism, social support, and spirituality....
One study found that 52% of women with breast cancer experience optimism, social support, and spirituality. A researcher interested in the effects of mediation on female cancer patients randomly selected a sample of 31 women who had completed breast cancer treatment and asked them to participate in the 8-week mediation program. She found that 22 of them have experienced optimism, social support, and spirituality. Is there evidence that the 8-week mediation program significantly increased the percentage of women experiencing optimism,...
In 1993, 5.6% of people used illegal opioids. This year, a company wishes to use their...
In 1993, 5.6% of people used illegal opioids. This year, a company wishes to use their employment drug screening to test a claim. They take a simple random sample of 2926 job applicants and find that 125 individuals fail the drug test for illegal opioids. They want to test the claim that the proportion of the population failing the test is lower than 5.6%. Use .01 for the significance level. Round to three decimal places where appropriate. Hypotheses: Ho:p=5.6% H1:p<5.6%...
In 2004, 6.5% of people used illegal opioids. This year, a company wishes to use their...
In 2004, 6.5% of people used illegal opioids. This year, a company wishes to use their employment drug screening to test a claim. They take a simple random sample of 1957 job applicants and find that 104 individuals fail the drug test for illegal opioids. They want to test the claim that the proportion of the population failing the test is lower than 6.5%. Use .10 for the significance level. Round to three decimal places where appropriate. Hypotheses: Ho:p=6.5%Ho:p=6.5% H1:p<6.5%H1:p<6.5%...
In 1991, 6% of people used illegal opioids. This year, a company wishes to use their...
In 1991, 6% of people used illegal opioids. This year, a company wishes to use their employment drug screening to test a claim. They take a simple random sample of 2612 job applicants and find that 130 individuals fail the drug test for illegal opioids. They want to test the claim that the proportion of the population failing the test is lower than 6%. Use .05 for the significance level. Round to three decimal places where appropriate. Hypotheses: Ho: p=6%...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT