I have calculated the degree of freedom, sample error, margin of error. Idek like everything and I have no idea how to get an interval of the speeds in thr 98% confidence interval

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

is only a line? i think so

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation:

it is not that hard all u have to do is plot the graph

step-by-step explanation: