The critical z for a two tail test at alpha equals .05 is.

Statistics by Geoffrey
  1. The critical z for a two tail test at alpha equals .05 is.
  2. Plus or minus 1.96
  3. Plus or minus 1.64
  4. Plus or minus 1.35
  5. Plus or minus 1.28

 

  1. It is known that the interval for p is (.025, .05).  Your alpha is .07
  2. In this situation, always retain the null hypothesis
  3. In this situation, always reject the null hypothesis
  4. In this situation, sometimes retain the null hypothesis
  5. In this situation, sometimes reject the null hypothesis

 

  1. When we speak of p, we mean the following
  2. P is the probability that we reject the null hypothesis
  3. P is the probability that the null is true given we have rejected the null
  4. P is the probability that the null is true given we have retained the null
  5. None of the above

 

  1. Unlike the z, the t distribution has which properties
  2. We have to deal with degrees of freedom
  3. We do not know the population standard deviation
  4. Both A and B
  5. Neither A nor B

 

 

  1. The Chi-Square distribution….
  2. Is used to measure the difference in means
  3. Is used to measure the differences in standard deviations
  4. Both A and B
  5. Neither A nor B

 

 

  1. The Wonderlic test is a test of adult intelligence.  It is known that the mean Wonderlic score is a 17 and it is known that the standard deviation is 6.  Carla has a sample of 36 adults whose average score is a 14.  This leads Carla to claim that the mean is less than the purported population mean.  She tests at alpha=.07