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Qusetion: Refer to Exercise. Now suppose you meet two new friends independently, and ask each of them on what day of the week they were born.
a. What is the probability that the first friend was born on a Friday?
b. What is the probability that both friends were born on a Friday?
c. What is the probability that both friends were born on the same day of the week?
Exercise: Suppose that people are equally likely to have been born on any day of the week. You meet a new friend, and ask her on what day of the week she was born.
a. List the simple events in the sample space.
b. What is the probability that she was born on a weekend (Saturday or Sunday)?
Give a 95% confidence interval for the difference in bleeding times. Do you think pressure increases mean bleeding time? Why?
Choose a business problem that is based upon an experience from your place of work or home environment. Briefly describe the business problem and the research methodology that you would employ to gather data and test your hypothesis
For a continuous random variable, is the probability density function, f(x), or the cumulative distribution function, F(x), more useful in calculating probabilities? Explain why you reach this conclusion.
This problem related to Basic Statistics and discuss about the use of exploratory, descriptive and casual research methods. Describes each of them with example, specific problems, methodology, ethical considerations and research design
Bismuth (a) and cadmium (b) form a eutectic at 144°C and xa 5 0.45. They are also completely immiscible in the solid phase. The melting points for bismuth and cadmium are 271°C and 321°C, respectively. The enthalpies of fusion of these elements a..
if a researcher wants to be 95 percent confident about the results of a study and past studies of the same attitude
Pareto charts. Continue the study of the process of getting to work or class on time from Exercise 27.2. If you kept good records, you could make a Pareto chart of the reasons (special causes) for late arrivals at work or class. Make a Pareto char..
(a) What is the probability that the student is both a senior and an English major? (b) Given that the student selected is a senior, what is the probability that she is also an English major? Write your responses as fractions.
A random sample of 20 one-way fares during particular month had a mean of $210 with a standard deviation of $43. At 0.02, is there sufficient evidence to conclude a difference from the stated mean?
a list of 50 subjects is entered into a computer file and then sorted by last name. the subjects are assigned to five
The company estimates there's a 30% chance it will get the larger contract and a 60% chance it will get the smaller contract. Assuming the contracts will be awarded independently, what's the expected profit?
A clinical trial was conducted comparing a new compound designed to improve wound healing in trauma patients to a placebo. After treatment for 5 days, 58% of the patients taking the new compound had a substantial reduction in the size of their wou..
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