Question

A new flu vaccine was developed to protect elderly people against viral infection during the winter...

A new flu vaccine was developed to protect elderly people against viral infection during the winter season. In 120 patients, 70 of the patients who were vaccinated. Of the 70 patients, 56 of the patients had no flu symptoms. 50 of the patients who were not vaccinated, 28 patients have no flu symptoms.

a) Determine the confidence interval (CI) at 95% (z*=1.96) level for the probability that a patient had no flu symptoms when a new vaccine is used during the winter season. What is the sample proportion (p̂) of patients with no symptoms when vaccine is used?

b) Carry out a statistical test at the α=0.05 level for whether the probability of vaccinated patients with no flu symptoms is higher than the proportion of people who are not vaccinated. Determine the null and alternative hypothesis. What is the pooled sample proportion (p̂)?

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
A new flu vaccine was developed to protect elderly people against viral infection during the winter...
A new flu vaccine was developed to protect elderly people against viral infection during the winter season. In 120 patients, 70 of the patients who were vaccinated. Of the 70 patients, 56 of the patients had no flu symptoms. 50 of the patients who were not vaccinated, 28 patients have no flu symptoms. Determine the confidence interval (CI) at 95% (z*=1.96) level for the probability that a patient had no flu symptoms when a new vaccine is used during the...
In order to test the effectiveness of the Flu vaccine, it was administered to 600 people...
In order to test the effectiveness of the Flu vaccine, it was administered to 600 people who were selected at random. At the end of the Flu season it was determined that 504 individuals did not get the Flu. Then the 95% confidence interval for the true proportion p of individuals who develop immunity is given by0.84 ± 0.05 0.84 ± 0.029 0.84 ± 1.96 0.84 ± 0.196
A drug company is studying the effect of a new drug. In its clinical trials, the...
A drug company is studying the effect of a new drug. In its clinical trials, the researcher used a significance level of .01. By using this significance level instead of the more usual .05, the researcher has A) Expanded the critical region B) Increased the critical value C) Increased the probability of rejecting the Ho 2) When a researcher failed to reject the null hypothesis A) The obtained statistical value is larger than the critical value B) The obtained statistical...
What tools could AA leaders have used to increase their awareness of internal and external issues?...
What tools could AA leaders have used to increase their awareness of internal and external issues? ???ALASKA AIRLINES: NAVIGATING CHANGE In the autumn of 2007, Alaska Airlines executives adjourned at the end of a long and stressful day in the midst of a multi-day strategic planning session. Most headed outside to relax, unwind and enjoy a bonfire on the shore of Semiahmoo Spit, outside the meeting venue in Blaine, a seaport town in northwest Washington state. Meanwhile, several members of...
________ client-centered therapy centers on the patient's goals and ways of solving problems. Select one: a....
________ client-centered therapy centers on the patient's goals and ways of solving problems. Select one: a. Rogers' b. Freud's c. Beck d. Ellis Question 2 Not yet answered Points out of 1.00 Flag question Question text A frequently prescribed drug therapy for managing one's depression is ____________. Select one: a. Adderall b. Lithium c. Prozac d. Thorazine Question 3 Not yet answered Points out of 1.00 Flag question Question text A major goal of modern inpatient psychiatric treatment is: Select...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT