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1. In a second grade class containing 12 girls and 10 boys, 2 students are selected at random to give out the math papers. What is the probability that the second student chosen is a boy, given that the first one was a girl?,
2. A student and a professor each choose a number between 1 and 5 (1 and 5 are both possible choices). What is the probability that the two choose the same number?
Romance USA present reported that 11 percent of all books sold are of the romance genre. If a local bookstore sells 316 books on a given day
At.05 significance level is it reasonable to conclude that it takes longer to determination software issues? Determine the p-value?
Assume that the measurements came from a normal distribution. The variability of the manufacturing process is unknown means the same as the standard deviation is unknown.
Determine a random number generator and make simulated data for not more than 25 participants (test subjects) in study using ranges of values for variables you established above.
For a standard normal distribution, findout the percentage of data that are among 3 standard deviation below the mean also1 standard deviation above the mean.
What advantage does correlation have over a cross-tab?
We are interested in testing to see if the variance of a population is less than 7. The correct null hypothesis is:
Evaluate true mean delivery time to within 5 minutes at 90% reliability level? Suppose that standard deviation for delivery times is 18.2 minutes.
Create a frequency table for the total number of people that prefer each type of music:
Find out the required probabilities utilizing Binomial distribution. According to Best buy, 2/3 citizens have iPods. In a randomly selected group of 3 iPod owners.
Suppose you were to cut up the directory and pull out one listing at random to contact.
For each of the following problems, assume that the homogeneity of variance assumption has not been met and that you will need to use the adjusted Welch statistic.
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