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Suppose you have a coin that lands on "heads" with probability p, 0 < p < 1. You don't know the value of p however. So you decide to run an experiment to get an estimate of p using the maximum likelihood approach. Specifically, you flip the coin 10 times and record the number of "heads" you observed. Then you repeat this process until you end up with a total of 15 data points y1,y2,...,y15 with each data point representing the number of "heads" in a round of 10 flips of this coin.
This indicates that about 80 out of 100 similarily constructed intervals would include the population porportion. (true or false)
consider a regression study involving a dependent variable y a quantitative independent variable x1 and a categorical
Use SPSS to make a scatterplot between stress and coping, and then add the fitted regression line to the plot. Mark both intercept and slope on the plot (You may consider to change the default X scale in SPSS)
The number of customers using the service desk has a Poisson distribution. What is the probability that during a randomly selected half-hour period no more than 2 customers use the service desk?
The degree three polynomial f(x) with real coefficients and leading coefficient 1, has -3 and + 4i among its roots. Express f(x) as a product of linear and quadratic polynomials with real coefficients.
A college class believes that the average grade average of psychology students and the average grade averages of biology students are different.
a researcher is interested in whether students who attend private high schools have higher average sat scores than
A company that produces an expensive stereo component is considering offering a warranty on the component. Suppose the population of lifetimes of the components is a normal distribution with mean of 84 months and standard deviation of 10 months.
A random sample of 20 users is obtained. Using the Binomial Probability Distribution, determine the following probabilities?
test null hypothesis: Meu=80 against alternative hpothesis=negative = 80 (alpha =.05). What does this tell you about meu?
Assume that an old used car fails to start 10% of the time. The other 90% of the time it drives for a time period which is uniformly distributed in the interval 20 to 30 minutes. In this interval all subintervals of time of equal width between 20 ..
Find the equation of the least squares regression line that models the relationship between square footage and rental amount and interpret the meaning of the coefficients.
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