Suppose that the hazard rate of a certain continuous positive random variable is given by 4t+4. Find the probability that this random variable is < 1/2. TYPE YOUR ANSWER AS A NUMBER WITH TWO DECIMAL DIGITS, AND USE e=2.72.
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![Suppose that the hazard rate of a certain continuous positive random variable is given by 4t+4. Find the probability that this
random variable is < 1/2.
TYPE YOUR ANSWER AS A NUMBER WITH TWO DECIMAL DIGITS, AND USE e=2.72.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F76b87b00-cc41-421f-bb9b-89d386b759f0%2F43ce528e-7dcb-4428-be7d-fe5ae7ce0a00%2Fdtgthj4_processed.png&w=3840&q=75)
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- Suppose that 70% of all students in a large university pass all their classes. Find the probability that more than 60% of 34 r/s students from this university pass all their classes.The mean percent of childhood asthma prevalence in 43 cities is 2.38%. A random sample of 30 of these cities is selected. Assume that o = 1.20%. Find the probability that the mean childhood asthma prevalence for the sample is greater than 2.6%. Round to four decimal places as needed.A continuous random variable is normally distributed. The probability that a value in the distribution is greater than 47 is 0.3085. Find the probability that a value in the distribution is less than 47.
- Construct the probability distribution for the random variable X which pertains to the number of heads when you toss three coins at the same time.The probability that a student passes APPDA is 2/3, and the probability that she passes Research Methods is 4/9. If the probability of passing at least one course is 4/5, what is the probability that she will pass both courses ? Final answer in % and 2 decimal places.A recent survey of 1040 U.S. adults selected at random showed that 634 consider the occupation of firefighter to have very great prestige. Estimate the probability (to the nearest hundredth) that a U.S. adult selected at random thinks the occupation of firefighter has very great prestige.Step 1Recall that the probability of an event based on relative frequency uses the formulaprobability of event = relative frequency = fn,where f is the frequency of the event occurrence in a sample of n observations. A total of 1040 people were surveyed and 634 considered the occupation of firefighter to have very great prestige. Therefore, the sample size is n = . The event of interest is that a U.S. adult selected at random thinks the occupation of firefighter has very great prestige. Therefore, the frequency f is equal to the number of adults who the occupation of firefighter has very great prestige, so f = (0.6096 answer is incorrect.) .
- The probability is 0.0770 that the 6th applicant for a factory job will be hired on the 13th interview. What is the probability that 6 applicants will be hired from 13 applicants who have been interviewed? Your answer should be to 4 decimal places.Ezra buys a bag of cookies that contains 9 chocolate chip cookies, 7 peanut butter cookies, 4 sugar cookies and 4 oatmeal cookies.What is the probability that Ezra reaches in the bag and randomly selects a peanut butter cookie from the bag, eats it, then reaches back in the bag and randomly selects a chocolate chip cookie? Give your answer as a fraction, or accurate to at least 4 decimal places.The probability of relapse into alcoholism can be modeled with a discrete random variable with mean ? = 4 years. Find the probability that a person will not reoffend in the first 2 years.
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