直线$y=kx+3$与圆${\left(x-3\right)}^2+{\left(y-2\right)}^2=4$相交于$M,N$两点，且$\left|MN\right|\ge 2\sqrt{3}$,则$k$的取值范围是（ ）

A: Jack!

B: ____?

A: Could you come and help me do the housework?

A: ____. I'm coming. ____?

B: I need to move this desk to the living room. But ____. Could you please help me move it.

A: OK. Why do you have to move it?

B: We are going to have a party.

A: A party? ____?

B: Tomorrow afternoon. All our friends will come then.

A: OK. I've got it.

若方程$\left(6a^2-a-2\right)x+\left(3a^2-5a+2\right)y+a-1=0$表示平行于x轴的直线，则$a$的值是（　　）

一组数据3，5，a，4，3的平均数是4，这组数据的方差为____．