Suppose the length of time Y (in years) that a malaria patient spends in remission has...
Chloroquine is used to prevent or suppress malaria in patients. Two weeks before the patient is potentially exposed to malaria, and for six weeks after the patient has returned, chloroquine is administered once a week (on the same day) at a dose of 500 mg. Suppose the patient spends 13 weeks in an area in which there is high exposure to malaria. How many 250-mg tablets of chloroquine will be administered altogether?
Chloroquine is used to prevent or suppress malaria in patients. Two weeks before the patient is potentially exposed to malaria, and for six weeks after the patient has returned, chloroquine is administered once a week (on the same day) at a dose of 500 mg. Suppose the patient spends 13 weeks in an area in which there is high exposure to malaria. How many 250-mg tablets of chloroquine will be administered altogether?
Suppose the average length of time to finish a homework problem is 50 minutes. If a random sample of 9 students' times has standard deviation 6, what is the approximate probability the average time of the sampled students to complete the homework will be more than 53.7 minutes?
Suppose it is desired to estimate the average time a customer spends in a particular store to within 5 minutes with 99% confidence. It is estimated that the range of the times a customer spends in the store is 90 minutes. How large a sample should be taken to get the desired interval? Right-click the link to use this Z table (The answer is NOT 135, or 134.37) (I believe the standard deviation is not 22.5) The answer is 60,...
Suppose the amount of time a doctor spends with their patients is normally distributed with a mean of 17.4 minutes and with standard deviation of 3.8 minutes. Suppose 26 patients have scheduled appointments on one day. What is the probability that the mean amount of time for those 26 patients is less than 18.5 minutes, which would be equivalent to the doctor seeing patients for 8 hours and 1 minute that day.
Suppose that Y has pdf given by f(y)=b/(y^2); y>=b, b>0. Suppose also that U has a uniform(0,1) distribution. What must the function g(*) be so that Z=g(U) has the same distribution as Y?
Suppose that the time (in hours) that Adam spends on an untimed final exam follows an exponential distribution with mean 1.75 hours, and the time that Ben spends on the same exam follows an exponential distribution with mean 2.25 hours. Assume that their times are independent of each other. Using appropriate notation for random variables and events: a) Determine the probability that Ben finishes in less than 2 hours. (Show your work; you may use either the pdf or cdf.)...
40.
Suppose cawlin has a budget of $90 that he spends on movies Q1 and
roller skating Q2. The price of movie tickets recently increased
from $6 per person to $9 per person, and the price of roller
skating decreased from $6 to $5 per person. What is cawlins new
budget contraint?
Question 40 Suppose Cawlin has a budget of $90 that he spends on movies (Q1) and roller skating (Q2). The price of movie tickets recently increased from $6...
For a certain river, suppose the drought length Y is the number of consecutive time intervals in which the water supply remains below a critical value y0 (a deficit), preceded by and followed by periods in which the supply exceeds this critical value (a surplus). An article proposes a geometric distribution with p = 0.397 for this random variable. (Round your answers to three decimal places.) (a) What is the probability that a drought lasts exactly 3 intervals? At most...
1. Suppose that the length of time a particular type of battery lasts follows an exponential distribution with a mean of 25.0 days. Find the probability that the average time a sample of 49 batteries lasts is at most 24.7 days a. 0.4665 b. 0.3723 c. 0.6277 d. 0.5335 2. Suppose that the length of time a particular type of battery lasts follows an exponential distribution with a mean of 25.0 days. Suppose the length of time a battery lasts...