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A random sample of 205 college students were asked if they believed that places could be haunted, and 65 of them responded yes. Estimate the true proportion of college students who believe in the possibilty of haunted places with 99% confidence.
Identify and briefly discuss two important concepts ( Prediction and Regression/ Correlation or Regression) applicable to analytical methodology.
Which of the following survey questions will deliver an unbiased response? Should the city ban smoking in restaurants to protect our children from second hand smoke?
Is the distinction among various parts of the bell-shaped curve arbitrary or is there certain logical and rational principle involved that creates such distinctive demarcations shown in a chart like this?
The Texas Transportation institute at texas A&M university conducted a survey to determine the number of hours per year drivers wasted sitting in traffic. the table below shows the number of hours wasted per year sitting in traffic.
Between what two values does the P -value of this test fall?
There are predictable stages through which every critical thinker must pass. Under what circumstances might one regress from one stage to a previous one?
Find the mean and standard deviation for the number of left-handed students in such classes of 25 students.
Choose a number at random from the set of numbers from the set of numbers {1,2,3,4,5}. Now choose a number from the subset {1,...,X). Call this second number Y.
A bar chart to illustrate the differences. What type of statistics was shown? What activities did the newspaper use to make the report?
The first three digits of a university telphone exchange are 452. if all the sequences of the remaining four digits are equally likely, what is the probability that a randomly selected universtiy phone number contains seven distinct digits?
Explain the difference between testing a single mean, testing the difference between two means from an "independent sample" and testing mean differences from a "dependent sample".
Using the original data, estimate the population standard deviation with 90% probability.
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