Question

Suppose that a pharmaceutical company claims that it has a new cure for the flu, and...

Suppose that a pharmaceutical company claims that it has a new cure for the flu, and that %96 of flu sufferers will fully recover within 24 hours of taking the drug. As a first test on the claim, a clinic will give the drug to 25 people diagnosed with the flu and check on their condition 24 hours later. Suppose that company’s claim is perfectly accurate.

1. Let random variable X be the number of people tested who will recover from the flu in 24 hours. What can we say about the probability distribution of X?

2. What is the chance that all 25 people tested will recover within 24 hours?

3. What is the chance that the percentage tested who recover will exactly match the claimed percentage?

4. What is the probability that only %80? of the people tested recover within 24 hours?

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 manufacturer has produced a new drug for depression. The pharmaceutical company performed a study in...
A manufacturer has produced a new drug for depression. The pharmaceutical company performed a study in which 25 depressed subjects took the new medication and 25 depressed subjects took a placebo pill. Neither the subjects nor the examiners administering the questionnaire knew who was in the drug group and who was in the placebo group. After 2 months, the subjects who took the drug had significantly improved scores on a standardized depression symptom questionnaire. The only side effects seen with...
A pharmaceutical company needs to know if its new cholesterol drug, Praxor, is effective at lowering...
A pharmaceutical company needs to know if its new cholesterol drug, Praxor, is effective at lowering cholesterol levels. It believes that people who take Praxor will average a greater decrease in cholesterol level than people taking a placebo. After the experiment is completed, the researchers find that the 25 participants in the treatment group lowered their cholesterol levels by a mean of 23.5 points with a standard deviation of 5.8 points. The 25 participants in the control group lowered their...
United Medicine, Inc., claims that a drug, Viro, significantly relieves the symptoms of a certain viral...
United Medicine, Inc., claims that a drug, Viro, significantly relieves the symptoms of a certain viral infection for 90 percent of all patients. Suppose that this drug is given to 15 randomly selected patients who have been diagnosed with the viral infection. (a) Let x equal the number of the 15 randomly selected patients whose symptoms are significantly relieved. What distribution describes the random variable x ? (B) Assuming that the company's claim is correct, find P(x ≤ 8). (c)...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 22 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? Let d=(blood pressure before taking new drug)−(blood pressure after taking new drug). Use a significance level of α=0.01 for the test. Assume that the systolic blood pressure levels are normally...
Suppose that a pharmaceutical company is interested in testing their new cholesterol medication and recruited 24...
Suppose that a pharmaceutical company is interested in testing their new cholesterol medication and recruited 24 adults with high blood pressures, where half of them were given the new drug and the other half were given the old drug. Then the reduction in LDL cholesterol level (unit: mg/dL) was measured after 6 months. Summary statistics of the amount of reduction are shown below. NOTE: Not all outputs given above are useful      n           x           s      New Drug    12    32    23 Old...
Suppose that a pharmaceutical company is interested in testing their new cholesterol medication and recruited 11...
Suppose that a pharmaceutical company is interested in testing their new cholesterol medication and recruited 11 sets of identical twins with high blood pressures. For each twin, one was given the new drug and the other was given the old drug, then the reduction in LDL cholesterol level (unit: mg/dL) was measured after 6 months. Summary statistics of the amount of reduction are shown below. NOTE: Not all outputs given above are useful      n           x           s      New Drug    11    42...
A bank has developed a set of criteria for evaluating distressed credit of company. Companies that...
A bank has developed a set of criteria for evaluating distressed credit of company. Companies that passed the test will go bankrupt (non-survivor) with probability 0.4. There are 55% of the companies passed the test. The probability that a company did not pass the test will subsequently survive is 0.10 a. What is the probability that a random company will survive (not going to bankrupt)?      b. A random survived company is selected, what is the probability that company passed...
Quick Start Company makes 12-volt car batteries. After many years of product testing, the company knows...
Quick Start Company makes 12-volt car batteries. After many years of product testing, the company knows that the average life of a Quick Start battery is normally distributed, with a mean of 45.4 months and a standard deviation of 7.7 months. (a) If Quick Start guarantees a full refund on any battery that fails within the 36-month period after purchase, what percentage of its batteries will the company expect to replace? (Round your answer to two decimal places.) % (b)...
An insurance company has one adjuster in the branch office. People with claims against the company...
An insurance company has one adjuster in the branch office. People with claims against the company are found to arrive in a Poisson fashion during an 8 to 5 workday. Determine the hourly service and arrival rates using an 8-hour workday. The amount of time that the adjuster spends with a claimant is exponentially distributed. Claimants are processed in the order of their arrival. You are the manager of this branch and you wanted to investigate service provided by your...
6. Tinder is a dating app that allows users to meet potential romantic partners based on...
6. Tinder is a dating app that allows users to meet potential romantic partners based on geographical proximity. To use Tinder, an individual merely swipes to the right to “like” a potential partner or swipes to the left to “pass” on a potential partner. If two users both like each other, it’s considered a “match,” and they are then able to chat through the app. It’s been claimed that 90% of Tinder users meet their matches within one week, but...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT