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A large playlist consists of songs with times which have mean 2 minutes ten seconds and standard deviation 15 seconds. A random sample of 36 songs is selected. What is the mean of the total length of the 36 songs, in minutes?
an experiment is conducted in which 60 participants each fill out a personality test but not according to the way they
Stat-101, questions from SPSS or Stat-101, Consider the way the table is arranged. If the hypothesis is correct, should we find a positive sign on Somers' dyx or a negative Signon Somers' dyx? Explain how you know.
Descriptive statistics (5-number summary, mean, mode, range and standard deviation) for each of the four variables along with an explanation of what the descriptive statistics tell us about the motion picture industry.
Which result had the margin of error of ±9 percentage points?
A project manager at System Design Corporation
A weight-loss clinic advertised that last month its patients, on average, lost 6 LBS . Assuming that average refers to the mean, which of the following claims must be true based on this information
How do small companies compare to the major competitor and Has satisfaction with the manufacturer changed since the change in company ownership?
The telephone bills send via regular mail
Choose a research question that can be addressed using a t-test. Ensure your research question allows you to collect data to analyze. Devise a plan to collect your data
What are the mean earnings of males and females in this sample? Does the regression result support the claim in the news and You decide to control for age (in years) in your regression results because older people, up to a point
Let X represent the number of tires with low air pressure on a randomly chosen car.
Examine the relationship between Traced by MedicalAid. Is there evidence that whether or not a child was traced is independent of whether the mother had medical aid
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