NotCJ126
24.05.2021 •
Mathematics
The time taken to complete a statistics test by all students is normally distributed with a
mean of 120 minutes and a standard deviation of 12 minutes. Find the probability that the
mean time taken to complete this test by a random sample of 16 students would be between
122 and 125 minutes.
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Ответ:
Third option or 3,9,27,81
Step-by-step explanation:
A geometric sequence is a sequence where the term multiplies by the last term to make the next term.
In these options, we can clearly see the second and fourth one are not geometric as their relationship is not by multiplying.
The first option is also wrong since 4*-16 is -64, not 64.
That leaves the third option. 3*9 = 27, 9*27 is 81. Therefore, it is the third option