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Home Q & A Board Science-Related Homework Help Mathematics
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rgasio rgasio
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6 years ago
Consider the following hypotheses test. H0:   80 Ha:  < 80 A sample of 121 provided a sample mean of 77.3 . The population standard deviation is known to be 16.5.
 a. Compute the value of the test statistic.
  b. Determine the p-value; and using  = .063, test the above hypotheses.
  c. Using the critical value approach and  = .063, test the hypotheses.
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#1
6 years ago
a . z = -1.8
b. p-value = .0359 < .063, reject H0
c. test statistic z = -1.8 < z.063 = -1.53, reject H0
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