Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $$ 52.6. You want to test this claim. The null and alternative hypothesis in symbols...


Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $$ 52.6. You want to test this claim.


The null and alternative hypothesis in symbols would be:




  • H0:μ≤52.6H0:μ≤52.6
    H1:μ>52.6H1:μ>52.6

  • H0:μ=52.6H0:μ=52.6
    H1:μ≠52.6H1:μ≠52.6

  • H0:p≥52.6H0:p≥52.6
    H1:p<><>

  • H0:p≤52.6H0:p≤52.6
    H1:p>52.6H1:p>52.6

  • H0:μ≥52.6H0:μ≥52.6
    H1:μ<><>

  • H0:p=52.6H0:p=52.6
    H1:p≠52.6H1:p≠52.6











The null hypothesis in words would be:





  • The average price of textbooks in a sample is $$ 52.6

  • The average of price of all textbooks from the store is greater than $$ 52.6.

  • The average price of all textbooks from the store is $$ 52.6

  • The proportion of all textbooks from the store that are less than 52.6 is equal to 50%

  • The average of price of all textbooks from the store is less than $$ 52.6.











Based on a sample of 90 textbooks at the store, you find an average of 48.4 and a standard deviation of 15.6.


The point estimate is:  (to 3 decimals)


The 90 % confidence interval (use z*) is:  to  (to 3 decimals)


Based on this we:




  • Reject the null hypothesis

  • Fail to reject the null hypothesis




Jun 07, 2022
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