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You are a serious student who studies on Friday nights but your roommate goes out and has a good time. 40% of the time he goes out with his girlfriend; 60% of the time he goes to a bar. 30% of the times when he goes out with his girlfriend he spends the night at her apartment. 40% of the times when he goes to a bar he gets in a fight and gets thrown in jail. You wake up on Saturday morning and your roommate is not home. What is the probability that he is in jail?
A local bakery uses its stock of sugar according to demand for its products. Indeed, the weekly sugar use follows approximately a normal distribution with mean 2,400 lb. and with standard deviation 400lb.
given that z is standard normal random variable compute the following probabilitiesa p-1lt-zlt-0b
Single group post-test and internal validity threats - Answer the question either by writing the design name or by describing the design using standard notation
the correlation between the number of police on the street and the number of crimes committed for a sample of 15
Fair die is rolled 10 times. Determine the probability that the odd number (1, 3 or 5) will occur less than 4 times?
a researcher hypothesizes that the variation in the amount of money spent on business dinners is greater than the
give and describe an example of an ordinal measurement
A population of 1000 students spends an average of $10.50 a day on dinner. The standard deviation of the expenditure is $3. A simple random sample of 64 students is taken.
q1. suppose the monthly percentage changes in the tse 300 index from 1980 to 2000 are normally distributed with a
Suppose the assembly times follow normal distribution. Find out z values for 29 and 34 hours. What percent of garages take between 32 hours and 34 hours to erect?
A survey of undergraduate students in the School of Business at Northern University revealed the following regarding the gender and majors of the students:
Determine the probability that their SAT scores will differ by more than 50 points?
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