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You are responsible for scheduling a construction project to build a convention center. In order to avoid big trouble, you will need the concrete to be placed before July 27 and for the financing to be arranged before August 6. Based on your experience and that of others, using subjective probability, you have fixed probabilities of 0.83 and 0.91 for these two events, respectively. Assume also that you have a 96% chance of meeting one deadline or the other (or both).
a. Find the probability of "big trouble."
b. Are these events mutually exclusive? How do you know?
c. Are these events independent? How do you know?
Male runners follow a normal distribution with unknown mean u and standard deviation o = 5 kg. You compute 95% confidence interval for u. What is the 95% confidence interval for u?
Suppose the following statement is made in a statistical summary: "A comparison of breathing capacities of individuals in households with low nitrogen dioxide.
How much more cereal do you expect to be in the large bowl?- What's the standard deviation of this difference?
A woman claims that she is a fortune-teller. Specifically, she claims that she can predict the direction of the change (up or down).
A manufacturer claims that the mean lifetime, mean, of its light bulbs is 52 months. The standard deviation of these lifetimes is 7 months. Ninety bulbs are selected at random, and their mean lifetime is found to be 55 months.
Dating In Chances- Risks and Odds in Everyday Life, James Burke claims that about 70 percent of all single men would welcome a woman taking the initiative in asking for a date. A random sample of 20 single men was asked if they would welcome the woma..
What are the main difference between the frequency distribution of continuous data and discrete data.2. How would you present a continuous data as though discrete?
a. What are the mean and standard deviation of the number of online retail orders that turn out to be fraudulent? b. What is the probability that zero online retail orders will turn out to be fraudulent?
International students. At a certain college, 6% of all students come from outside the United States. Incoming students there are assigned at random.
In a laboratory experiment, data were gathered on the life span (Y in months) of 33 rats, units of daily protein intake (X1), and whether or not agent X2 (a proposed life extending agent) was added to the rats diet (X2 = 0 if agent X2 was not added, ..
question assume that breast cancer affects .8 percent of the female population between 40 and 50 years of age. there
find the value of the test statistic z using the claim is that more than 75 of adults always wear a seat belt in the
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