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The probability that a student passes mathematics is 2/3 and the probability that he passes biology is 4/9. If the probability of passing one course is 4/5, what is the probability that he will pass both courses?
Are there differences in satisfaction with Intake process of clients who admit with mental health problems, substance abuse problems, or both.
There were 3 defectives in the first batch and 5 in the second. Find a 95% confidence interval for the difference in the proportion of defectives.
What is the probability that a cereal would either high calorie or high fiber? In other words, what is P(high calorie or high fiber)?
AU Cellular believes their sales are more consistent than their rival Softbank Cellular. Below is the number lost calls a day over the last seven days. Do you agree with AU? Use the .01 significance level.
An important idea in data interpretation is choosing which graph to use under which circumstances. Describe the benefits of different graphs for different sets of data:
Found mean number of sticks of gum chewed per day was 9. Standard deviation of population is 1. At α = 0.05, is number of sticks of gum person chews per day actually greater than 8?
What are confounds? Give an example of a design that has three confounds. Describe three ways to alter the design to address these confounds and explain the advantages and disadvantages of each.
Sample resulted in mean trading volume = 39.48. Population standard deviation = 15.07. Compute 95% confidence interval for u.
Let X1,... x30 be independent Poisson random variables having mean 1. (a) Use Chebyshev's inequality to find a lower bound on the probability.
Find the critical value Zc necessary to form a confidence interval at the given level of confidence.
The city of denver wishes to see if there is a linear relationship between temperature and the amount of electricity used (in kilowatts) Based on the data below, is there a significant linear relationship between temperature and the amount of elec..
Use the contingency table to find the probability that a randomly selected student (1) Has a Mastercard or a VISA (2) Has neither credit card.
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