A weatherman stated that the average temperature during July in Chattanooga is 80 degrees or less. A sample of 32 Julys is taken
1 answer:
Answer:
The correct set of hypotheses is
: d=80 degrees
: d>80 degrees
Step-by-step explanation:
The weatherman claims that the average temperature during July in Chattanooga is 80 degrees or less. To test this claim, following hypotheses need to be taken:
Let d be the the average temperature during July in Chattanooga, then
: d=80 degrees
: d>80 degrees
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Answer:
Option (2)
Step-by-step explanation:
Given : y =
If x = 7i
y =
By simplifying denominator of the given rational expression,
y =
y =
y =
y = [Since, i² = (-1)]
y =
y =
y =
Therefore, Option (2) is the correct option.