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Rework problem 29 from section 3.5 of your text about the professor who sometimes forgets to bring her briefcase to the office, but assume that, each day, the probability that she forgets the briefcase is 1/8. Assume that her forgetting is a Bernoulli process.
1. What is the probability that she remembers to bring her briefcase every day in one week (5 days)?
2. What is the probability that she forgets to bring her briefcase every day in one week (5 days)?
3. What is the probability that she forgets to bring her briefcase at least one day in one week (5 days)?
What two assumptions must be met when you are using the z test to test differences between two means? Can the sample standard deviations s1 and s2 be used in place of the population standard deviations σ1 and σ2?
Sears conducted a quality control study on the car batteries that customer purchase off of the shelf. 50 batteries are selected and it is determined that 6 are defective and 44 are functioning properly. This is a binomial experiment. Select the appro..
Suppose we choose independently two numbers at random from the interval [0, 1] with uniform probability density. What is the density of their sum?Let X and Y be random variables describing our choices and Z = X + Y
Respond to your peers or the professor and tell the person whether his answer is correct or incorrect and explain why. Indicate the name of the topic and the name of the slice on the Subject line so it is easier for others to follow. Pleas..
A product is made up of two subsystems in parallel. Subsystem one consists of ten elements in series with a failure rate if 1/100. The second subsystem consists of 5 elements in series with a failure rate of 1/200. What is the overall reliabili..
The owner of a single-family home would like to develop a model to predict electricity consumption in his house, based on average atmospheric temperature in degrees Fahrenheit.
A box contains 6 red balls and 4 green balls. Three balls are to be taken from this box at random and with replacement. (That is, after each ball is taken out, we note its color but then replace it (i.e.put it back) in the box before drawing another ..
Does there appear to be a relationship between work hours and loan amount - Explain the meaning of the coefficient of determination as it applies specifically to this problem.
A random sample of 900 homeowners in Delaware County is taken in order to estimate the average amount of money spent by homeowners on landscaping this spring. It turns out that this group spent an average of $200 with a standard deviation of $..
Scores on a marketing exam are known to be normally distributed with mean and standard deviation of 60 and 20. a) Find the probability that a randomly selected student scores between 50 and 80. b) Find the probability that a randomly selected student..
What would be the 80th percentile for height?
A medical doctor wishes to test the claim that the standard deviation of the systolic blood pressure of deep sea divers is greater than 450. To do so, she selected a random sample of 25 divers and found s = 468.
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