Question: Researchers are interested in assessing whether there is a difference in the average weight of a backpack for the population of Irish secondary school children

Researchers are interested in assessing whether there is a difference in the average weight of a backpack for the population of Irish secondary school children who don't use technology as part of their school day, 1, compared to the average weight of a backpack for the population of Irish secondary school children who do use technology, 2. Backpack weight in pounds was recorded for a sample of students for each population independently. Backpack weight in the populations are assumed to be normally distributed. A 95% confidence interval for 1 2 is estimated from the sample statistics to be between 4.07 and 6.74.

What can you conclude from this interval:

(a) This suggests the average backpack weight for the population of Irish secondary school children who use technology is 4.07 pounds and the average backpack weight for the population of Irish secondary school children who don't use technology is 6.74 pounds.

(b) This suggests no difference in the average backpack weight for the population of Irish secondary school children who use technology and the average backpack weight for the population of Irish secondary school children who don't use technology.

(c) This suggests the average backpack weight for the population of Irish secondary school children who don't use technology is greater than the average backpack weight for the population of Irish secondary school children who do use technology by between 4.07 and 6.74 pounds.

(d) This suggests the average backpack weight for the population of Irish secondary school children who don't use technology is less than the average backpack weight for the population of Irish secondary school children who do use technology by between 4.07 and 6.74 pounds.

(e) This suggests the average backpack weight for the population of Irish secondary school children who use technology is greater than the average backpack weight for the population of Irish secondary school children who don't use technology by between 4.07 and 6.74 pounds.

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