The overall distance traveled by a golf ball is tested by hitting the ball with iron byron, a mechanical golfer with a swing that is said to emulate the legendary champion, byron nelson. ten randomly selected balls of two brands are tested and the overall distance measured. assume that the variances are equal. the data follow: brand 1: 288 278 287 271 283 271 279 275 263 267 brand 2: 261 238 260 265 273 281 271 270 263 268 (a) is there evidence to show that there is a difference in the mean overall distance of brands? use (b) calculate a 95% two-sided confidence interval on the difference in mean overall distance. round your answer to one decimal place (e. g. 98.7

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

faster, im not sure why but i know it is faster

jeff jeff

step-by-step explanation: