Question

4. A researcher wants to test the claim that women who are exposed glycol ethers are...

4. A researcher wants to test the claim that women who are exposed glycol ethers are more likely to have miscarriages than those who are not. Among the 40 women who are exposed glycol ethers that he randomly selected, 15 had miscarriages. Whereas, among the randomly selected 780 women who are not exposed glycol ethers, 130 had miscarriages. Is there enough evidence to conclude that the claim is correct? Use α = 0.01. Use the p-value method.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In a survey, 500 men and 500 women were randomly selected. Among the men, 52 had...
In a survey, 500 men and 500 women were randomly selected. Among the men, 52 had been ticketed for speeding within the last year, whereas 27 of the women had been ticketed for speeding during the same period (based on data from R. H. Bruskin Associates). (a) At the 0.01 significance level, test the claim that women have lower rate of speeding tickets. Original claim is made by the Answer hypothesis. Original claim is: pwomen - pmenAnswer 0. Test statistic:...
Let α = .05. A study out of Harvard wants to test the claim that the...
Let α = .05. A study out of Harvard wants to test the claim that the proportion of students who consider themselves Democrats and the proportion students who consider themselves Republicans are equal. Harvard takes a sample size of 1,003 and finds that 529 consider themselves Democrats. Using ρ0 = .5 do we have evidence to conclude that there is a significant difference between political affiliation among students? Make sure to write out the hypothesis, show all work, and state...
Identify the CONCLUSION of a hypothesis test of the following claim and sample data: Claim: “The...
Identify the CONCLUSION of a hypothesis test of the following claim and sample data: Claim: “The average weekly number of hours spent studying by students who sit in the front of the classroom is greater than that of students who sit in the back of the classroom.” Dozens of randomly selected students were asked how many hours they study per week. There were 35 students who said that they tend to sit toward the front of the classroom, and their...
Let α= .05. Astudy out of ETSU wants to test the claim that the proportion of...
Let α= .05. Astudy out of ETSU wants to test the claim that the proportion of students who consider themselves Democrats and the portion that consider themselves Republicans are equal. ETSU takes a SRS of size 1,003 and finds that 529 consider themselves Democrats. Using ρ0=.5 do we have evidence to conclude that there is a significant difference between political affiliation among students? Please right hypothesis, state conclusion and which test was used
A medical researcher wants to determine whether a drug changes the body’s temperature. Seven test subjects...
A medical researcher wants to determine whether a drug changes the body’s temperature. Seven test subjects are randomly selected, and the body temperature (in degrees Fahrenheit) of each is measured. The subjects are then given the drug and after 20 minutes, the body temperature of each is measured again. The results are listed below. Use significance level α = 0.05, and we assume that the body temperatures are normally distributed.pleae show work t-Test: Paired Two Sample for Means Initial Temperature...
1. Identify the correct HYPOTHESES used in a hypothesis test of the following claim and sample...
1. Identify the correct HYPOTHESES used in a hypothesis test of the following claim and sample data: Claim: “The average weekly number of hours spent studying by students who sit in the front of the classroom is greater than that of students who sit in the back of the classroom.” Dozens of randomly selected students were asked how many hours they study per week. There were 35 students who said that they tend to sit toward the front of the...
Some researchers claim that herbal supplements improve human memory. To test this claim, a researcher selects...
Some researchers claim that herbal supplements improve human memory. To test this claim, a researcher selects a sample of n = 25 college students. Each student is given herbal supplements daily for 6 weeks and then all the participants are given a standardized memory test. For the population, scores on the tests are normally distributed with µ = 70 and σ= 20. The sample of n = 25 students had a mean score of M = 80. Can we conclude...
4. A researcher wants to study the effects of getting a flu vaccination on actually getting...
4. A researcher wants to study the effects of getting a flu vaccination on actually getting the flu virus for healthy adult Americans. The researcher randomly selects 100 participants from a list of healthy patients; 50 of those selected agree to participate. The 50 are randomly assigned to one of two groups: members of group 1 receive a flu vaccination and members of group 2 receive a placebo. In 4 weeks, participants were contacted and asked if they had contracted...
A medical researcher wants to determine whether there is a difference in the mean length of...
A medical researcher wants to determine whether there is a difference in the mean length of time it takes three types of pain relievers to provide relief from headache pain. Several headache sufferers are randomly selected and given one of the three medications. Each headache sufferer records the time (in minutes) it takes the medication to begin working. The results are shown in the table. At a α = 0.01, can you conclude that the mean times are different? Assume...
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,...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT