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Random Sample Obtain (generate) a random sample of 180 numbers between 1 and 60. You may use a calculator, excel, or a table of random numbers to achieve this. Use your sample to answer the following questions:
1. What is the mean?2. What is the mode?3. Compute the median.4. Does your sample have more than one mode?5. Summarize your sample into a frequency distribution with 6 classes.6. Draw a histogram to represent the distribution.7. Comment on the shape of the distribution.8. Calculate the standard deviation of the sample.9. Construct a cumulative distribution for your sample10. Plot your cumulative distribution.
The following data values are a simple random sample from a population that's normally distributed with (symbol for variance) o2=4.0:
Your supervisor has asked you to conduct a survey about consumers' buying habits. For this task, you surveyed 100 men and 100 women at a local shopping mall.
Explain in your own words why the test statistic for Goodness-of-Fit is similar to the calculation for Population Standard Deviation.
A simple random sample of 50 adults is obtained, and each person's red blood cell count (in cells per micro-liter) is measured. The sample mean is 5.23. The population standard deviation for red blood cell counts is 0.54.
Many vehicles used in space travel are constructed with redundant systems to protect the flight crew and their equipment. Find the probability that this shuttle component functions successfully if n = 2.
Differentiate between the levels of measurement by providing an example of data which can be transformed from one level of measurement to another and another example of data that cannot be transformed.
Suppose the time interval between two consecutive defective light bulbs from a production line has a uniform distribution over an interval from 0 to 90 minutes.
The progress report of a research analyst to the supervisor stated: "All the estimated regression coefficients in our model with three predictor variables to predict sales are statistically significant.
In a random sample of 150 freshman applications received thus far, 67 of the applicants request financial aid. Is there evidence that the proportion of next year's freshmen class needing financial aid has increased?
A University Counseling Clinic is interested in predicting the levels of depression from the number of social events attended per week by a sample of their clients. The data are below:
A fast food chain restaurant chain claims that lunch will be served within nine minutes of placing your order, or it is free. A sample of eight customers revealed the following waiting times in minutes:
The following data are from an independent-measures experiment comparing two treatment conditions. Do these data indicate a significant difference between the treatments
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