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Author Question: A random sample of 10 university students was surveyed to determine the amount of time spent weekly ... (Read 155 times)

jayhills49

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on: Jun 24, 2018
A random sample of 10 university students was surveyed to determine the amount of time spent weekly at the library. The times are: 13, 14, 5, 6, 8, 10, 7, 12, 15, and 3 . If the times are normally distributed with a standard deviation of 5.2 hours, estimate with 90 confidence the mean weekly time at the library by all university students.

Question 2

Because of multicollinearity, the t-tests of the individual coefficients may indicate that some independent variables are not linearly related to the dependent variable, when in fact they are.
  Indicate whether the statement is true or false


Zebsrer

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Reply #1 on: Jun 24, 2018
Answer to Question 1

LCL = 6.59 and UCL = 12.01 hours.

Answer to Question 2

T


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