ANSWER
The graph of f(x) is horizontally stretched.
EXPLANATION
The given function is
The vertex of this function is (-4,-6)
The factor ⅔ strectches the graph horizontally in the graph of f(x) opens wider than the parent function
y=|x|
The negative factor will make the graph open downwards. It is a reflection in the x-axis.
The domain of the graph is all real numbers.
Answer:
See explanation below
Explanation:
1) Option C is correct.
The average difference in husband and wife marriage ages in Cumberland County; μd
2) Option D is correct.
Null: The average difference in marriage ages in Cumberland County is 0.
Alt: The average difference in marriage ages is greater than 0.
3) Option A is correct
Null: μd = 0
Alt: μd > 0
4) Given:
n = 24
d' = 1.875
Sd = 4.812
Find test statistic:
Degree of freedom, df = n - 1 = 24 - 1 = 23
Pvalue
Pvalue = 0.0344
Significance level = 0.05
5) Since p value is less than significance level, reject null hypothesis H0
Hence, there is strong evidence that, on average, husbands are older than their wives in Cumberland County