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(a) Make a scatter diagram of the scores:
(b) Describes in words the general pattern of correlation, if any;
(c) Figure the correlation coefficient;
(d) Figure whether the correlation is statistically significant (use the: 05 significance level, two-tailed);
(e) Explain the logical of what you have done, writing as if you are speaking to someone who has never heard of correlation (but who does understand the mean, deviation scores, and hypothesis testing): and
(f) Give three logically possible directions of casualty, indicating for each direction whether it is a reasonable explanation for the correlation in light of the variables involved (and why).
Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test (high scores mean more anxiety). The scores are as follows.
Person Anxiety
Dexterity
1
10
2
8
3
4
-2
Describe and analyze your quantitative data and Briefly address the data analysis process.
Assuming the nurses surveyed were a simple random sample from the population of all nurses in the United States, find the appropriate null hypothesis for these data
Find the percent of a standard Normal model found in the given region. Round to the nearest hundredth of a percent.
Construct a 99% confident interval for the standard deviation of the amount of vitamin B6 per pill.
Find the critical F value for the Following,
What is the probability that the mean price for a sample of 30 service stations is within $.03 of the population mean (to 4 decimals)?
Evaluate the mean wait time and throughput rate
At.05 significance level, is there a difference in mean number of calls per day between 2 employees? Compute the p -value?
If you have a statistical package that computes binomial probabilities, find the probability that at least five funds outperform the market in all 10 years.
Choosing the appropriate the sampling design for the given data
Assuming the population is large, which sample size will give the smallest standard deviation to the statistic and select the numbers for the first five to be interviewed.
Find at least what percentage of all homeowners in this city pay a monthly mortgage of 865 to 1,675.00.
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