Chegg true, false, or uncertain. in each of the following situations, state whether each statement is true, false, or uncertain, and explain your answer. your score is evaluated on the explanation you provide, therefore, if you do not provide explanation, you will not receive any credit even if you stated true, false, or uncertain correctly. a researcher wants to test h0: x = 30 versus the one sided alternative : x < 30. d. the 95% margin of error for the mean of a normal population with unknown is the same for all srs of size n.

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

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step-by-step explanation: