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A student drilled a hole in a die, loaded it with lead weight, and then rolled the die 200 times. The observed frequencies for the outcomes of 1, 2, 3, 4, 5, and 6 are respectively 27, 31, 42, 40, 28, and 32. Would you be able to conduct a goodness-of-fit test for this study? Explain which requirements are met and which are not.
When comparing data from different distributions, what is the benefit of transforming data from these distributions to conform to the standard distribution?
Create probability tree showing all marginal, conditional, and joint probabilities. Create a joint probability table.
What is the probability of a fatal accident over a lifetime? Explain your reasoning carefully. Hint: Assume independent events. Why might the assumption of independence be violated? Why might a driver be tempted not to use a seat belt "just on thi..
Choose any Markov Chain with a 3x3 transition matrix that is irreducible and aperiodic. The reason it needs to be irreducible and aperiodic is because we are looking for a Markov Chain that converges.
Regression line drawn as y c 1075x, when x was 2 and y was 239 given that y intercept was 11, calculate the residual.
Testing indicates that the lifetimes of a shipment of disposable butane lighters are normally distributed with a mean of 1000 lights and a standard deviation of 100. What percentage of these lighters will:
How many participants need to be enrolled in each group to have 90% chance of detecting a significant difference using a two-sided test with a a= .05 if compliance is perfect?
If the oven gets hotter than 475 degrees F, the core is defective. What is the probability that the oven will cause a core to be defective?
A random sample of 56 people measured accuracy w/ positive errors representing watches that are ahead of the correct time and negative rep. those behind the time.
We are certain the the average difference in reaction times between the two light types for all golfers is between 0.27 and 7.13.
Camera batteries has a standard deviation of 2.1 months. Assume the variance is normally distributed. Do you fell that the lifetimes of the batteries are relatively consistent?
Calculate the standard deviation for this data = since it is a case of grouped data with classes. use group or class midpoints in the formula in place of x values.
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