A pharmacist receives a shipment of 18 bottles of a drug and has 5 of the...
A pharmacist receives a shipment of 16 bottles of a drug and has 3 of the bottles tested. If 5 of the 16 bottles are contaminated, what is the probability that less than 2 of the tested bottles are contaminated? Express your answer as a fraction or a decimal number rounded to four decimal places
A pharmacist receives a shipment of 17 bottles of a drug and has 4 of the bottles tested. If 6 of the 17 bottles are contaminated, what is the probability that less than 3 of the tested bottles are contaminated? Express your answer as a fraction or a decimal number rounded to four decimal places.
A pharmacist receives a shipment of 22 bottles of a drug and has 4 of the bottles tested. 5 of the 22 bottles are contaminated, what is the probability that at least 3 of the tested bottles are contaminated? Express your answer as a fraction or a decimal number rounded to four decimal places
A pharmacist receives a shipment of 25 bottles of a drug and has 4 of the bottles tested. If 5 of the 25 bottles are contaminated, what is the probability that at least 3 of the tested bottles are contaminated? Express your answer as a fraction or a decimal number rounded to four decimal places.
28. There are 8 black balls and 9 red balls in an urn. If 4 balls are drawn without replacement, what is the probability that more than 1 black ball is drawn? Express your answer as a fraction or a decimal number rounded to four decimal places. Answer: ____________________ 29. A pharmacist receives a shipment of 24 bottles of a drug and has 4 of the bottles tested. If 5 of the 24 bottles are contaminated, what is the probability...
Unknown to a medical researcher, 6 out of 18 patients have a heart problem that will result in death if they receive the test drug. 8 patients are randomly selected to receive the drug and the rest receive a placebo. What is the probability that more than 1 patient will die? Express your answer as a fraction or a decimal number rounded to four decimal places.
A bottle maker assumes that 18% of his bottles are defective. If the bottle maker is accurate, what is the probability that the proportion of defective bottles in a sample of 626 bottles would differ from the population proportion by more than 4%? Round your answer to four decimal places.
Unknown to a medical researcher, 4 out of 18 patients have a heart problem that will result in death if they receive the test drug. 7 patients are randomly selected to receive the drug and the rest receive a placebo. What is the probability that exactly 2 patients will die? Express your answer as a fraction or a decimal number rounded to four decimal places. Answer(How to Enter) 2 Points Keypad Keyboard Shortcuts
12. Suppose 500 athletes are tested for a drug, one in twenty has used the drug, the test has a 98% specificity and the test has a 100% sensitivity. That is, the probability of a false positive is 2% and there is no chance that the user of the drug will go undetected. Construct a tree diagram showing the probabilities associated with this problem. Write a probability on each branch (6 branches). Multiply the the probabilities along each path and...
12. Suppose 500 athletes are tested for a drug, one in twenty has used the drug, the test has a 98% specificity and the test has a 100% sensitivity. That is, the probability of a false positive is 2% and there is no chance that the user of the drug will go undetected. Construct a tree diagram showing the probabilities associated with this problem. Write a probability on each branch (6 branches). Multiply the the probabilities along each path and...