Select the values of r that make the inequality true.
2 answers:
Answer:
Option C and D are the correct answer.
Step-by-step explanation:
If x > -3, then the values which satisfy the inequalities can be represented on a number line which is shown above.
Then the range of values that satisfies the inequalities are numbers to the right of -3 which are: -2, -1, 0, 1, 2, 3, 4, 5 --- up to positive infinity.
From the options provided only 0 and -1 satisfies the range.
Option C and D are correct.
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Answer:
- z for 184 = -2.2
- P(z < -2.2) ≈ 1.4%
- z for 200 = -0.6
- P(z < -0.6) ≈ 27.4%
- P(184 < x < 200) ≈ 26.0%
Step-by-step explanation:
Z is computed from ...
... z = (x -μ)/σ
Our lower limit for x is 184, so its z-value is ...
... z = (184 -206)/10 = -22/10 = -2.2
Our upper limit for x is 200, so its z-value is ...
... z = (200 -206)/10 = -6/10 = -0.6
A suitable table or probability calculator can tell you ...
... the percent of area associated with z = -2.2 is about 1.4%. That is, about 1.4% of all values lie below z = -2.2.
... the percent of area associated with z = -0.6 is about 27.4%.
The fraction of expenses between $184 and $200 is then calculated to be ...
... 27.4% - 1.4% = 26.0%
