What is the range of the given function? {(–2, 0), (–4, –3), (2, –9), (0, 5), (–5, 7)
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Answer:
Yes, sufficient evidence exists to reject the proposal.
Step-by-step explanation:
This requires a single mean test to determine if the average expense of raising a child from birth to age 2 by husband-wife families in the U.S. is $13,960.
The hypotheses are:
H₀: The average expense of raising a child from birth to age 2 by husband-wife families in the U.S. is $13,960, or µ = $13,960.
Hₐ: The average expense of raising a child from birth to age 2 by husband-wife families in the U.S. differs from $13,960, or µ ≠ $13,960.
Provided is the summary of information:
The computed test statistic is:
The test statistic equals -2.24.
We will determine the p-value for this test statistic at a 10% significance level using the following calculations:
Consult the z-table.
The calculated p-value stands at 0.0251 < 0.10, prompting the null hypothesis to be rejected.
Conclusion:
Since the null hypothesis has been rejected at the 10% significance level, it can be concluded that sufficient evidence exists to refute the claim.
The average expense of raising a child from birth to age 2 by husband-wife families in the U.S. does not equal $13,960.