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  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#9 Re: Exercises » Boxes with disks. » Yesterday 13:56:54

Hi;

Remember that Matrix division is undefined and they use the inverse instead. As such I know of the formula

#11 Re: Help Me ! » Why Rationalize Infinite Limits » Yesterday 10:06:15

Maybe you had better show me exactly what you do with that limit and we can go from there.

#12 Re: Help Me ! » Probability Help » 2016-02-08 18:22:45

For 1) I still need more info, What do you mean by glazed.

For 2) I am getting 1890.

For 3) you can use the hypergeometric distribution which is designed for this type problem. The answer is 21 / 40.

#18 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-08 15:29:52

Very good!

They did not fix the roof, they just moved me across the hall to another apartment. I will be moving my stuff today. Anything left? I will get to it as soon as I get back on online.

#19 Re: Help Me ! » Why Rationalize Infinite Limits » 2016-02-08 10:35:56

The best response is can you do it another way and get the right answer?

#20 Re: Help Me ! » Elementary statistics set 3 » 2016-02-08 02:51:03

You are welcome, I have to get off line for a while because I am having trouble with a leak in the ceiling. They can not fix it so I am moving to a different apartment. Will be back later.

#22 Re: Help Me ! » elementarty statistics set 4---Thanks!! » 2016-02-08 02:25:18

For #9, .816 is greater than .602 so I would say there is sufficient evidence, so choose B.

#23 Re: Help Me ! » Elementary statistics set 1 » 2016-02-08 02:20:41

For #3 I would pick A. Since the sample is voluntary it may not be a random sample of people.

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