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1. What is the power of a hypothesis test? Why is it important?
2. How is the power of a hypothesis test related to the significance level σ?
3. How can the power of a hypothesis test be increased without increasing the sample size?
a random sample of 100 voters found that 44 were going to vote for a certain candidate. find the 99 limit for the
given the following data on seven seas sales type of boat observed sales expected sales expected observedpirates
Using the table below, compute the spearman rank correlation coefficient for the aggressiveness scores. Does this suggest that both twins tend to be similar in degrees of aggressiveness?
Island Water Sports is a business that provides rental equipment and instruction for a variety of water sports in a resort town. On one particular morning, a decision must be made of how many Wildlife Raft Trips and how many Group Sailing Lessons ..
Prove that for a symmetric matrix with strictly positive elements, (1) there exists a largest, unique latent root λ i > 0, and (2) the latent vector P1 associated with λl can always be chosen to havc strictly positive elements.
If a technical breakthrough occurred that raised the profit per unit of X 1 to $3, would this affect the optimal solution?
Write down an approximation to the distribution of X based on the central limit theorem. How would you expect the success of the approximation to vary with n?
Perform a linear regression, 8 month moving average & 3 month moving average forecasting technique to see which is most accurate for the new quarter 11 if quarter 11 sales are 172,000 units
for a standard normal probability distribution find the percentage of data that area within 1 standard deviation of the
In a separate visit to the restaurant, the dining-column journalist is accompanied by three colleagues. Each person orders one hamburger. What is the probability that at least 2 of these 4 customers will get a hamburger that had a pre-cooked weigh..
the lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days.a find
find the 95 confidence interval for the difference between two means based on this information about two samples.
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