Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $$ 91.86. You want to test this claim. The null and alternative hypothesis in symbols would be: H0:μ≥91.86H0:μ≥91.86 H1:μ<91.86H1:μ<91.86 H0:p=91.86H0:p=91.86 H1:p≠91.86H1:p≠91.86 H0:μ≤91.86H0:μ≤91.86 H1:μ>91.86H1:μ>91.86 H0:p≥91.86H0:p≥91.86 H1:p<91.86H1:p<91.86 H0:μ=91.86H0:μ=91.86 H1:μ≠91.86H1:μ≠91.86 H0:p≤91.86H0:p≤91.86 H1:p>91.86H1:p>91.86 Correct The null hypothesis in words would be: The average price of textbooks in a sample is $$ 91.86 The average price of all textbooks from the store is $$ 91.86 The proportion of all textbooks from the store that are less than 91.86 is equal to 50% The average of price of all textbooks from the store is greater than $$ 91.86. The average of price of all textbooks from the store is less than $$ 91.86. Correct Based on a sample of 100 textbooks at the store, you find an average of 88.46 and a standard deviation of 19.8. The point estimate is: (to 3 decimals) The 90 % confidence interval (use z*) is: Incorrect to Incorrect (to 3 decimals) Based on this we: Fail to reject the null hypothesis Reject the null hypothesis
Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $$ 91.86. You want to test this claim. The null and alternative hypothesis in symbols would be: H0:μ≥91.86H0:μ≥91.86 H1:μ<91.86H1:μ<91.86 H0:p=91.86H0:p=91.86 H1:p≠91.86H1:p≠91.86 H0:μ≤91.86H0:μ≤91.86 H1:μ>91.86H1:μ>91.86 H0:p≥91.86H0:p≥91.86 H1:p<91.86H1:p<91.86 H0:μ=91.86H0:μ=91.86 H1:μ≠91.86H1:μ≠91.86 H0:p≤91.86H0:p≤91.86 H1:p>91.86H1:p>91.86 Correct The null hypothesis in words would be: The average price of textbooks in a sample is $$ 91.86 The average price of all textbooks from the store is $$ 91.86 The proportion of all textbooks from the store that are less than 91.86 is equal to 50% The average of price of all textbooks from the store is greater than $$ 91.86. The average of price of all textbooks from the store is less than $$ 91.86. Correct Based on a sample of 100 textbooks at the store, you find an average of 88.46 and a standard deviation of 19.8. The point estimate is: (to 3 decimals) The 90 % confidence interval (use z*) is: Incorrect to Incorrect (to 3 decimals) Based on this we: Fail to reject the null hypothesis Reject the null hypothesis
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 1E
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Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $$ 91.86. You want to test this claim.
The null and alternative hypothesis in symbols would be:
- H0:μ≥91.86H0:μ≥91.86
H1:μ<91.86H1:μ<91.86 - H0:p=91.86H0:p=91.86
H1:p≠91.86H1:p≠91.86 - H0:μ≤91.86H0:μ≤91.86
H1:μ>91.86H1:μ>91.86 - H0:p≥91.86H0:p≥91.86
H1:p<91.86H1:p<91.86 - H0:μ=91.86H0:μ=91.86
H1:μ≠91.86H1:μ≠91.86 - H0:p≤91.86H0:p≤91.86
H1:p>91.86H1:p>91.86
The null hypothesis in words would be:
- The average price of textbooks in a sample is $$ 91.86
- The average price of all textbooks from the store is $$ 91.86
- The proportion of all textbooks from the store that are less than 91.86 is equal to 50%
- The average of price of all textbooks from the store is greater than $$ 91.86.
- The average of price of all textbooks from the store is less than $$ 91.86.
Based on a sample of 100 textbooks at the store, you find an average of 88.46 and a standard deviation of 19.8.
The point estimate is: (to 3 decimals)
The 90 % confidence interval (use z*) is: Incorrect to Incorrect (to 3 decimals)
Based on this we:
- Fail to reject the null hypothesis
- Reject the null hypothesis
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