Answer:
First option is the correct answer.
Step-by-step explanation:
Let us consider each part, we have number 6 inside all the roots.
First we have to find cube root of 6.
Now we have to find square root of this value.
So, first option is the correct answer.
Answer:
Step-by-step explanation:
Let's put the data as below:
n1=15 x1=2.8 s1=1.6 and s1²=2.56
n2=19 x2=2.4 s2=1.7 and s2²=2.89
alpha= 0.05
To test the hypothesis:
H0= There is no sufficient evidence that low income household have fewer children
H1=There is sufficient evidence that low income household have fewer children
Assume that population variances are equal.
the t-static for two samples,
~t with min (n1-1,n2-1)df
The pooled variance estimate Sp equals:
Sp²=2.7456
Sp=1.65699
Degrees of freedom=n1+n2-2=32
Under null hypothesis:
The critical value ttab=2.0369 for alpha=0.05
So we reject our null hypothesis H0
So there is sufficient evidence that low income households have fewer children than high income households