Suppose that BC financial aid allots a textbook stipend by claiming that the average textbook at BC bookstore costs $$ 67.42. You want to test this claim. The null and alternative hypothesis in symbols would be:

• H0:67.42H0:67.42 H1:<67.42H1:<67.42
• H0:=67.42H0:=67.42 H1:67.42H1:67.42
• H0:p67.42H0:p67.42 H1:p<67.42H1:p<67.42
• H0:p67.42H0:p67.42 H1:p>67.42H1:p>67.42
• H0:p=67.42H0:p=67.42 H1:p67.42H1:p67.42
• H0:67.42H0:67.42 H1:>67.42H1:>67.42

The null hypothesis in words would be:

• The average of price of all textbooks from the store is less than $$ 67.42.
• The average price of textbooks in a sample is $$ 67.42
• The proportion of all textbooks from the store that are less than 67.42 is equal to 50%
• The average price of all textbooks from the store is $$ 67.42
• The average of price of all textbooks from the store is greater than $$ 67.42.

Based on a sample of 90 textbooks at the store, you find an average of 73.02 and a standard deviation of 15.6. The point estimate is: (to 3 decimals) The 95 % confidence interval (use z*) is: to (to 3 decimals) Based on this we:

Fail to reject the null hypothesis or Reject the null hypothesis