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Assume that the fishes neither new born or died in the 10 days. For 0 ? k ? 20, find a probability that there are k marked fishes in your selection.
The weight of the cereal in a box is a random variable with mean 12.15 ounces and standard deviation 0.2 ounce. What percentage of the boxes have contents that weigh under 12 ounces?
Use the appropriate normal distribution to approximate the resulting binomial distribution.
Use the appropriate normal distribution to approximate the resulting binomial distribution. A basketball player has a 75% chance of making a free throw.
The scores on an economics examination are normally distributed with a mean of 74 and a standard deviation of 16. If the instructor assigns a grade of A to 10% of the class, what is the lowest score
Determine the probability that four tires selected at random still have useful tread lives after 24,750 mi of driving. (Assume that the tread lives of the tires are independent of each other.)
According to a recent survey of New Jersey households, the probability that the residents own 2 cars if annual household income is over $25,000 is 80%.
Determine the constant c so that the function f(x) satisfies the conditions of being a probability mass function. Give the cdf of X. Calculate the expected value and the variance of X.
What range of values will capture the middle 68% of values? What range of values will capture the middle 95% of values?
Answer the following questions relative to the following statement: Medical inpatient unit is known to have a central line infection rate of 5% of the patients it treats.
The sizes of the differences between the actual values and predicted values for the dependent variable must be about the same for all values of the independent variables.
Give an example of how one might use Linear Programming in the "real world".
The student body of a large university consists of 30% Business majors. A random sample of 20 students is selected. What is the probability that among the students in the sample at least 10 are Busine
If I build a regression model with two independent variables that are highly correlated, which violation of the assumptions of linear regression have I likely committed?
You conducted a Chi-Square Goodness of Fit Test. Unfortunately, you did not get the sample size you had hoped for during your research. You were able to get 55 in the sample.
For which of the following is a binomial distribution appropriate for the variable X?
Which of the variables meet the conditions for a binomial distribution? Select all that apply.
The probability that a person in the United States has type O+ blood is 40%. Three unrelated Americans are selected at random. What is the probability that at least two out of the three have blood t
When a survey calls residential telephone numbers at random, only 25% of the calls reach a live person. You watch the random dialing machine make 17 calls.
A rapid test for the presence in the blood of antibodies to HIV, the virus that causes AIDS, gives a positive result with probability about 0.004 when a person who is free of HIV antibodies is test
How many times would you expect to be able to honk the horn with a 50% probability of not having any failures? What is the expected number of times you hit the horn before the fourth failure?
How do I find the percentage of scores that fall at or below a person with a score of 7? And percentage of scores that fall above a person with a score of 6?
Suppose each of n balls labeled 1 to n is placed in one of n boxes labeled 1 to n. Assume the n placements are made independently and uniformly at random (so each box can contain more than one ball)
Packets arrive at a router at the rate of 1000 packets per second. In an experiment, the number of arriving packets are counted over a period of 2 milliseconds.