Claim: The average rain fall is 4.5 inches. A random sample of 7 revealed a mean of 4.93 inches and a sample standard deviation of 0.59. Use the p-value method at a 5% significance level to test the claim. αα =     [three decimal accuracy]     p-value =     [three decimal accuracy]       Conclusion   Reject H0H0 Fail to Reject H0H0

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 7E
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Claim: The average rain fall is 4.5 inches.

A random sample of 7 revealed a mean of 4.93 inches and a sample standard deviation of 0.59. Use the p-value method at a 5% significance level to test the claim.

αα =  
  [three decimal accuracy]
   
p-value =  
  [three decimal accuracy]
   
  Conclusion
 
  • Reject H0H0
  • Fail to Reject H0H0

 

Determine αα corresponding to a critical z-score of -0.842 in a left-tail test.

α =  
  [three decimal accuracy]
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ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,