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Using the applet, create a plot for the target correlation r = +0.5 in which one point is an outlier that decreases the correlation. Make the plot such that if the outlier were removed, the correlation for the remaining points would be greater than r = 0.7. Sketch an approximate facsimile of your resulting graph.
If a baseball player's batting average is 0.340 or 34%, find the probability that the player will have a bad season and only score at most 60 hits in 200 times at bat?
If there is an outage, there is a .05 probability that the resulting losses will be very large, approximately $ 80 million in lost earnings. Also, it is estimated that there is a .95 probability of only slight losses of around $ 1 million. What is..
problem 1 a small factory consists of a machining center and inspection station in series. unfinished parts arrive to
Assuming that these numbers are exact and that the sample was randomly chosen from the entire population of interest, give a 90% con?dence interval for the proportion of ?lled MBA positions in Europe.
Then apply regression analysis in which the percentage change in the trade balance is the dependent variable and the percentage change in the exchange rate is the independent variable. Is there a significant relationship between the two variables?..
The data in the next table resulted from an experiment that used a completely random design. Test the null hypothesis that u1 = u2 = u3, where ui represents the true mean for treament i, against the alternative that at least two of the means differ..
I run various A/B Split tests online. I always set all my tests for 10,000 visitors so page A and B are each equally rotated 5,000 times.
The average public elementary school has 450 students. assume the stand deviation of the distribution is 99. if a random sample of 36 public elementary schools is selected, find the probability that the number of students enrolled is between 445 a..
Using the 0.05 level of significance, test the null hypothesis that the population means are equal. Using the appropriate statis- tical table, what is the approximate p-value for this test? Construct and interpret the 95% confidence interval for..
a psychologist has developed a new method designed to help people taking an exam. the method requires the person to
A university wants to determine the proportion of students who use a cash card to pay at the university food service. Out of 100 students surveyed, 65 students use a cash card. Estimate the value of the population proportion.
Compare the flows in the three lanes by making parallel boxplots. Which lane typically serves the most traffic? Examine the relationships of the flows in the three lanes by making scatterplots. Can you explain the patterns you see
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