To study the effect of temperature on the tendency for vehicle tires to puncture, 1000 drivers in a large city were recruited and provided with two types of tires for their vehicles. For the three winter months during the year-long study, the drivers used Brand A winter tires on their vehicles. For the other nine months, the drivers used Brand B all-season tires on their vehicles. At the end of the year, the proportion of Brand A tires that punctured was compared to the proportion of Brand B tires that punctured. Is this a good experimental design? (A) No, because more than two tire brands should be used (B) No, because there might not be enough tires that puncture during the experiment (C) No, because of the presence of confounding (D) No, because proportions are not appropriate statistics to compare (E) Yes

A test is being designed to compare the wearing quality of two brands of automobile tires. The automobiles will be selected and equipped with the new tires and then driven under "normal" conditions for one month. Then a measurement will be taken to determine how much wear took place. If a sample of cars will be selected randomly, equipped with one tire of brand A, and one tire of brand B (the other two tires are not part of the test), and driven for a month.

Assertion(A): A punctured tyre becomes flat more easily in summer than in winter.Reason(R): Rate of diffusion decreases with increase in temperature

Kim is analysing the performance of a variety of small cars when they are fitted with fuel saver tyres, compared with their original tyres fitted.  Explain how this research is collecting data by experiment.

A tire manufacturer has a 60,000-mile warranty for tread life. The manufacturer considers the overall tire quality to be acceptable if less than 8% are worn out at 60,000 miles.The manufacturer tests 250 tires that have been used for 60,000 miles. They find that 15 of them are worn out. With this data, we test the following hypotheses at the 5% significance level.H0: The proportion of tires that are worn out after 60,000 miles is equal to 0.08.Ha: The proportion of tires that are worn out after 60,000 miles is less than 0.08.The p-value is 0.15. Which conclusion is correct? Reject H0. Fail to reject H0. Accept H0.

A tire manufacturer has a 60,000-mile warranty for tread life. The manufacturer considers the overall tire quality to be acceptable if less than 8% are worn out at 60,000 miles.The manufacturer tests 250 tires that have been used for 60,000 miles. They find that 15 of them are worn out. With this data, we test the following hypotheses at the 5% significance level.H0: The proportion of tires that are worn out after 60,000 miles is equal to 0.08.Ha: The proportion of tires that are worn out after 60,000 miles is less than 0.08.The p-value is 0.15. Which conclusion is correct? Accept H0. Reject H0. Fail to reject H0.