Answer:
A. The distribution of sample means of the differences will be approximately normal if there are at least 30 years of data in the sample and/or if the population of differences in winning times for all years is normal.
Step-by-step explanation:
In other to perform a valid paired test, one of the conditions required is that, data for both groups must be approximately normal. To attain normality, the population distribution for the groups must be normal or based on the central limit theorem, the sample size must be large enough, usually n > 30. Hence, once either of the two conditions are met, the paired sample will be valid.
Answer:
f=110132.328974hti
Step-by-step explanation:
Answer:
x+y=-5.75
Step-by-step explanation:
Ⓗⓘ ⓣⓗⓔⓡⓔ
Well, you would simply need to use the distributive property!
-(2)x-(2)2+(2)y-(2)9=1
-2x-4+2y-18=1
Then you need to add/subtract so the similar numbers are together.
-2x+2y-22=1
-2x+2y=23
x+2y=-11.5
x+y=-5.75
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Please, please give brainliest, it would be greatly appreciated, I only a few more before I advance, thanks!
D 288 because 216/3 equals 72 times that by 4 and you get 288.
Answer:
77.77
Step-by-step explanation:
you subtract 16 (prediction) - 9 (actual) and divide it by the actual.