Answer:
x=-5/53
Step-by-step explanation:
1. Add similar elements: 4x+27x=31x
2. Multiply 13 times 2 to get 26
3. Once again add the similar elements: 31x+26x=57x
4. Expand!!: Originally (4x+1) take away the Parentheses!!
5. 57x+6=4x+1
6. Subtract 6 from both sides: 57x+6-6=4x+1-6
7. Simplify: 57x=4x-5
8. Subtract 4x from both sides: 57x-4x=4x-5-4x
9. Simplify: 53x=-5
10. Divide both sides by 53: 53x/53= -5/53
11. x= -5/53
True , the null hypothesis of zero difference between the two population means cannot be rejected at a 0.10 level of significance.
Given :
f a 90% confidence interval for the difference in the two population means contains zero, then the null hypothesis of zero difference between the two population means cannot be rejected at a 0.10 level of significance.
at 10 % significance:
z score = 1.282
at 90 % confidence interval :
z score = 1.645
differences between population mean = 1.282
so true the null hypothesis of zero difference between the two population means cannot be rejected at a 0.10 level of significance.
Learn more about the null hypothesis here:
brainly.com/question/28920252
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Answer:correct choices are B, D and E.
Step-by-step explanation:sRory if its wrong
Answer:
I think it's B:<u> an = 8 ⋅ an–1 </u>
Step-by-step explanation:
Answer:
z ∝ x^2
Z = kx^2
when z = 36 and x = 2, substitute into the equation above
i.e, 36 = k x 2^2
36 = 4k
therefore k = 9
so the equation becomes
Z = 9x^2
when x =3
Z = 9 x 3^2
Z = 9 x 9
Z = 81
Step-by-step explanation: