Probability & Accounting

Images are sometimes not shown due to bandwidth/network limitations. Refreshing the page usually helps.

You are currently reading a thread in /wsr/ - Worksafe Requests

You are currently reading a thread in /wsr/ - Worksafe Requests

Thread images: 1

Anonymous

Probability & Accounting 2016-02-01 06:44:13 Post No. 46834

[Report] Image search: [iqdb] [SauceNao] [Google]

Probability & Accounting 2016-02-01 06:44:13 Post No. 46834

[Report] Image search: [iqdb] [SauceNao] [Google]

In a container with 100 mixed nuts, 25% are cashews, 25% are pecans, 20% are Brazil nuts. If 10 are randomly selected without replacement what is the probability that 7 are peanuts and 3 are cashews? The answer is 0.0003. How is this done? I know it's with binomial distributions, and the replacement thing doesn't matter because independence is satisfied by a 10% sample size...At least, I think that's the case.

If Laura invests $200 each month in a fund earning 3.46% annual interest compounded quarterly for 11 years, how much will Laura have in the fun at the end of 11 years? $31,961 is the answer. No clue how this one is done. I've tried everything I know of, P(1+i)nt = a((1+i)nt - 1)/i

There are four types of balls, a soccer ball, basketball, baseball, and tennis ball. What is the probability of selecting AT LEAST 10 of the same ball? I know the probability of selecting at least 10 of one particular ball is 1 - binomialcdf(9, 24, 0.25) = 0.0546693. I don't think it's a simple matter of multiplying by four and adding it up as "OR" events that are independent and added together. I don't have the answer for this one.

>>

>100 mixed nuts,

>25 are cashews,

>25 are pecans

>20 are Brazil nuts.

>If 10 are randomly selected without replacement what is the probability that 7 are peanuts and 3 are cashews?

Peanuts?

>the replacement thing doesn't matter because independence is satisfied by a 10% sample size...At least, I think that's the case.

you're wrong.

>>

>If Laura invests $200 each month in a fund earning 3.46% annual interest compounded quarterly for 11 years, how much will Laura have in the fun at the end of 11 years? $31,961 is the answer. No clue how this one is done. I've tried everything I know of, P(1+i)nt = a((1+i)nt - 1)/i

I would say, this result is wrong. It is calculating an annuity immediate (31960,88862) when really it should be calculating an annuity due (32237,3503). Nobody says they start investing in a fund at the start of the month, when they make the first payment at the end of the month. This is stupid!

Thread images: 1

Thread DB ID: 488420

All trademarks and copyrights on this page are owned by their respective parties. Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.

This is a 4chan archive - all of the shown content originated from that site. This means that 4Archive shows their content, archived. If you need information for a Poster - contact them.

If a post contains personal/copyrighted/illegal content, then use the post's