Quesuoi
ui 20
2 points
suppose that a company claims that its coffee cans contain 9.4 ounces of
coffee, on average. you take many large samples, and find, each time, that the
mean weight of the sample is within the 95% confidence interval. which of
the following would be a reasonable conclusion?
o
a. the company's coffee cans contain less than 9,4 ounces of
coffee, on average.
o
b. the company's coffee cans do not contain 9.4 ounces of coffee,
on average.
o
c. the company's coffee cans contain 9.4 ounces of coffee, on
average
o
d. the company's coffee cans contain more than 9.4 ounces of
coffee, on average

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above