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Sagot :
Test which should the golf pro use is a)paired t-test for means. So, correct option is a.
A paired t-test is the test performed to check whether the mean of two unique arrangements of perceptions is equivalent or the distinction between them is zero. It is otherwise called a reliant or related t-test. A matched t-test is one of the two sorts of test t-tests which are utilized to look at the normal or mean of two populaces.
The distinction in two examples that might happen while ascertaining the mean is a direct result of the irregular opportunity or testing blunder. The two examples on which the matched t-test is tried is connected by some quality like similar number of individuals or things or conditions. The utilizations of this test are in the exploration areas of science, business and brain research.
Hence, correct option is a.
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(Complete question) is:
A golf pro wants to determine if Titleist Pro V1 golf balls travel farther, on average, than Callaway Chrome Soft golf balls . A robot hits 9 of each ball, selected at random, and the distance traveled is measured. Assume the distances traveled are normally distributed. The average distance traveled by the 9 Titleist Pro V1 golf balls is 261.1 yards with standard deviation 10 yards, and the average distance traveled by the 9 Callaway Chrome Soft golf balls is 249.3 yards with standard deviation 12 yards.
Which test should the golf pro use to determine if Titleist Pro V1 golf balls travel a longer average distance than Callaway Chrome Soft golf balls?
a. paired-t test for means
b. paired-z test for means
c. Ottest for proportions
d. test for means
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