Suppose you are interested in buying a new Toyota Corolla. You are standing on the sales lot looking at a model with different options. The list price is on the vehicle. As a salesperson approaches, you wonder what the dealer invoice price is for this model with its options. The following data are based on a random selection of Toyota Corollas of different models and options. Let y be the dealer invoice (in thousands of dollars) for the given vehicle. x 12.9 12.9 12.8 13.6 13.4 14.2 y 11.6 12.1 11.5 12.2 12.0 12.8 (b) Use a 10% level of significance to test the claim that ? > 0. (Use 2 decimal places.) t critical t Conclusion Reject the null hypothesis, there is sufficient evidence that ? > 0.Reject the null hypothesis, there is insufficient evidence that ? > 0. Fail to reject the null hypothesis, there is insufficient evidence that ? > 0.Fail to reject the null hypothesis, there is sufficient evidence that ? > 0. (d) Find the predicted dealer invoice when the list price is x = 13.7 (thousand dollars). (Use 2 decimal places.) (e) Find a 90% confidence interval for y when x = 13.7 (thousand dollars). (Use 2 decimal places.) lower limit upper limit (f) Use a 10% level of significance to test the claim that ? > 0. (Use 2 decimal places.) t critical t Conclusion Reject the null hypothesis, there is sufficient evidence that ? > 0.Reject the null hypothesis, there is insufficient evidence that ? > 0. Fail to reject the null hypothesis, there is insufficient evidence that ? > 0.Fail to reject the null hypothesis, there is sufficient evidence that ? > 0. (g) Find a 90% confidence interval for ? and interpret its meaning. (Use 2 decimal places.) lower limit upper limit Interpretation For every $1,000 increase in list price, the dealer price increases by an amount that falls within the confidence interval.For every $1,000 increase in list price, the dealer price decreases by an amount that falls within the confidence interval. For every $1,000 increase in list price, the dealer price increases by an amount that falls outside the confidence interval.For every $1,000 increase in list price, the dealer price decreases by an amount that falls outside the confidence interva

Suppose you are interested in buying a new Toyota Corolla. You are standing on the sales lot looking at a model with different options. The list price is on the vehicle. As a salesperson approaches, you wonder what the dealer invoice price is for this model with its options. The following data are based on a random selection of Toyota Corollas of different models and options. Let y be the dealer invoice (in thousands of dollars) for the given vehicle. x 12.9 12.9 12.8 13.6 13.4 14.2 y 11.6 12.1 11.5 12.2 12.0 12.8 (b) Use a 10% level of significance to test the claim that ? > 0. (Use 2 decimal places.) t critical t Conclusion Reject the null hypothesis, there is sufficient evidence that ? > 0.Reject the null hypothesis, there is insufficient evidence that ? > 0. Fail to reject the null hypothesis, there is insufficient evidence that ? > 0.Fail to reject the null hypothesis, there is sufficient evidence that ? > 0. (d) Find the predicted dealer invoice when the list price is x = 13.7 (thousand dollars). (Use 2 decimal places.) (e) Find a 90% confidence interval for y when x = 13.7 (thousand dollars). (Use 2 decimal places.) lower limit upper limit (f) Use a 10% level of significance to test the claim that ? > 0. (Use 2 decimal places.) t critical t Conclusion Reject the null hypothesis, there is sufficient evidence that ? > 0.Reject the null hypothesis, there is insufficient evidence that ? > 0. Fail to reject the null hypothesis, there is insufficient evidence that ? > 0.Fail to reject the null hypothesis, there is sufficient evidence that ? > 0. (g) Find a 90% confidence interval for ? and interpret its meaning. (Use 2 decimal places.) lower limit upper limit Interpretation For every $1,000 increase in list price, the dealer price increases by an amount that falls within the confidence interval.For every $1,000 increase in list price, the dealer price decreases by an amount that falls within the confidence interval. For every $1,000 increase in list price, the dealer price increases by an amount that falls outside the confidence interval.For every $1,000 increase in list price, the dealer price decreases by an amount that falls outside the confidence interva

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Related questions

Question

x	12.9	12.9	12.8	13.6	13.4	14.2
y	11.6	12.1	11.5	12.2	12.0	12.8

(b) Use a 10% level of significance to test the claim that ? > 0. (Use 2 decimal places.)

t
critical t

Conclusion

Reject the null hypothesis, there is sufficient evidence that ? > 0.Reject the null hypothesis, there is insufficient evidence that ? > 0. Fail to reject the null hypothesis, there is insufficient evidence that ? > 0.Fail to reject the null hypothesis, there is sufficient evidence that ? > 0.

(d) Find the predicted dealer invoice when the list price is x = 13.7 (thousand dollars). (Use 2 decimal places.)

(e) Find a 90% confidence interval for y when x = 13.7 (thousand dollars). (Use 2 decimal places.)

lower limit
upper limit

(f) Use a 10% level of significance to test the claim that ? > 0. (Use 2 decimal places.)

t
critical t

Conclusion

(g) Find a 90% confidence interval for ? and interpret its meaning. (Use 2 decimal places.)

lower limit
upper limit

Interpretation

For every $1,000 increase in list price, the dealer price increases by an amount that falls within the confidence interval.For every $1,000 increase in list price, the dealer price decreases by an amount that falls within the confidence interval. For every $1,000 increase in list price, the dealer price increases by an amount that falls outside the confidence interval.For every $1,000 increase in list price, the dealer price decreases by an amount that falls outside the confidence interval.

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