What are the constants in the expression below? Check all that apply.
2 answers:
Answer: The correct options are :
(B)
(C)
(F)
Step-by-step explanation: We are given to select all the constants in the following expression :
We know that
in an algebraic expression, the constants are those terms which are not multiplied to some unknown variables.
In the given expression (i), there are two unknown variables x and y.
So, the terms which are not multiplied by x or y are the constants in the expression.
Therefore, the required constants are
Thus, (B), (C) and (F) are the correct options.
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Answer:
p-value: 0.0367
Decision: Reject H₀
Step-by-step explanation:
Hello!
Hypothesis to test:
H₀:ρ₁-ρ₂=0
H₁:ρ₁-ρ₂>0
The statistic to use to test the difference between two population proportions is the approximation of Z
Z=<u> (^ρ₁-^ρ₂)-(ρ₁-ρ₂) </u> ≈N(0;1)
√ (<u>^ρ₁(1-^ρ₁))/n₁)+(^ρ₂(1-^ρ₂)/n₂))</u>
Z=<u> (0.28-0.15)-0 </u>= 1.79
√ (<u>0.28(1-0.28)/200)+(0.15(1-0.15)/300)</u>
p-value
Remember: The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).
P(Z>1.79)= 0.0367
Conclusion:
Comparing the p-value against the significance level, you can decide to reject the null hypothesis.
I hope you have a SUPER day!