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Herpetologists (snake specialists) found that a certain species of reticulated python have an average length of20.5 feet with a standard deviation of 2.3 feet. The scientists collect a random sample of 30 adult pythons and measure their lengths. In their sample the mean length was 19.5 feet long. One of the herpetologists fears that pollution might be affecting the natural growth of the pythons. Do you think this sample result is unusually small? Explain. Show work.
If the population standard deviation is s = 10, is the sample sufficient to demonstrate a significant effect? Again, assume a two-tailed test with a = 0.05.
In a paragraph explain the differences between the Independent Samples and Paired Samples T-Test. When do you use each? Purpose a research question that could be addressed using each test
Discuss whether the percent distribution of the cross-tab and chi-square supports/does not support the researcher's hypothesis.
Create the estimated regression equation by calculating the values of b 0 and b 1
In this paragraph, be sure to make it clear how you handled the issue of conducting three planned comparisons. Also provide the ANOVA summary table for these results.
Using the Binomial Distribution, find the probability that if Air Northeast books 22 people on a flight, not enough seats will be available for all booked passengers.
The 2006 General Social Survey asked, "what do you think is the ideal number of children for a family to have?" The 1097 females who responded had a median of 2, mean of 3.16, and a standard deviation of 1.91.
Find out a 95% confidence interval for the proportion p of adults who have a great deal of trust and confidence in the executive branch of government.
The waiting time to place an order at a branch of a fast-food chain during the lunch hour has had population mean of 3.55 minutes, with a population standard deviation of 1.1 minute.
What is the predicted values of the fund in the period t = 1? What is the predicted value of the fund in the period 3, and period 7?
Show that z and iz have the same modulus. How are the graphs of these two numbers related?
Compute descriptive statistics for each stock and the S&P 500. Comment on your results. Which stocks are the most volatile? Compute the value of beta for each stock. Which of these stocks would you expect to perform best in an up market? Which..
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