Answer:
y = 21
Step-by-step explanation:
x = 5
y = 5 (5) - 4
y = 25 - 4
y = 21
(5 , 21)
Hope this helps!
26.315789, you should use a caculator
Answer: 13,864,675 seconds
Step-by-step explanation:
I minute 15 seconds = 75 seconds
That means it takes 75 seconds to achieve 150 , and it takes x seconds to achieve 27,729,350. Interpreting this in proportion form , we have:
150 ------ 75 seconds
27,729,350 ------- x seconds
Then
150x = 27,729,350 X 75
150x = 2,079,701,250
x = 2,079,701,250 / 150
x = 13,864,675
That means it takes 13,864,675 seconds to achieve the goal , converting this to minutes, we have:
231,077.9 minutes
Answer:
A paired T- Test
Step-by-step explanation:
In a paired sample t-test, every entity is measured two times(twice), resulting in pairs of observations. It is used to determine whether the mean difference between two sets of observations is zero or not.
An example would be to measure performance of patients before and after the medicine and analyze difference using sample paired t test.
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<em>Here, in the given statement, each student is provided with 15 multiple choice questions and 15 open ended questions on same material. It can also be inferred as each student given two sets of same material and their performance was being observed. Hence, it is a paired t-test.</em>