prob and stats | Mathematics | Page 1

ivory vaporBOT Sep 14, 2023, 10:57 PM

#

Wait patiently for a helper to come along.
Once someone helps you, say thank you and close the thread with:

+close

Feel free to nominate the person for helper of the week in #helper-nominations
Do not ping the mods, unless someone is breaking the rules.
If you're happy with the help you got here, and the server overall, you can contribute financially as well:

sonic thicket Sep 14, 2023, 11:05 PM

#

Flip an unbiased coin five independent times.
Compute the probability of
(a) HHTHT.
(b) THHHT.
(c) HTHTH.
(d) Three heads occurring in the five trials.

#

I assume a - c is the same answer. because probability h and t are both ,5

#

0.03125

prisma bough Sep 14, 2023, 11:07 PM

#

sonic thicket I assume a - c is the same answer. because probability h and t are both ,5

yup

#

uhhh do they want you r answer is fraction or decimal

#

usually probability is a fraction

sonic thicket Sep 14, 2023, 11:08 PM

#

i dont think it matters for my teacher

sonic thicket Sep 14, 2023, 11:31 PM

#

@prisma bough would d also be the same?

#

its technically the same as a-c i think

#

nvm no,

#

u use choose then multiply it

#

so itll just be 10 * 0.03125

prisma bough Sep 14, 2023, 11:47 PM

#

yeye

sonic thicket Sep 14, 2023, 11:52 PM

#

very last question: An urn contains two red balls and four white
balls. Sample successively five times at random and with
replacement, so that the trials are independent. Compute
the probability of each of the two sequences WWR WR
and R WWWR. I got 8/243 for both sequences

#

bc P(W) = 4/6 P(R) = 2/6

#prob and stats