Gl assessment pack 1 test 1 help please

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goldenstar
Posts: 73
Joined: Sun Jan 20, 2013 11:22 am

Gl assessment pack 1 test 1 help please

Post by goldenstar »

30
For which of these can you work out the
probability exactly?

A.It will rain tomorrow when Class B
go on a school trip.

B.Mr Wood will pass his driving test.

C.Stuart will miss the 8.30 a.m. bus
to school.

C. Emily will throw heads when she
tosses a coin.

D. Amy will come third in a
swimming competition.

What is the answer for this.

In the answer sheet b, d mentioned.
Guest55
Posts: 16254
Joined: Mon Feb 12, 2007 2:21 pm

Re: Gl assessment pack 1 test 1 help please

Post by Guest55 »

Only the one about Emily as the outcomes are equally likely. Two outcomes so probability of one is 1/2.

All the others cannot be calculated.
goldenstar
Posts: 73
Joined: Sun Jan 20, 2013 11:22 am

Re: Gl assessment pack 1 test 1 help please

Post by goldenstar »

Thank you for your help.
mystery
Posts: 8927
Joined: Tue Jul 21, 2009 10:56 pm

Re: Gl assessment pack 1 test 1 help please

Post by mystery »

What did the printed question and answer say was the answer?
ToadMum
Posts: 11944
Joined: Wed Jan 18, 2012 12:41 pm
Location: Essex

Re: Gl assessment pack 1 test 1 help please

Post by ToadMum »

mystery wrote:What did the printed question and answer say was the answer?
OP said b, d mentioned on answer sheet - can't see how someone's ranking in a swimming race can be calculated with any certainty unless one knows that there are only three in the race and this girl has never come within a minute of the other two over the distance :?

- actually, scrap that, D is the coin-tossing, I think, because the OP lists A/B/C/C/D so the second C is D.

B is someone passing driving test, though...
Outside of a dog, a book is a man's best friend. Inside of a dog it's too dark to read.Groucho Marx
mystery
Posts: 8927
Joined: Tue Jul 21, 2009 10:56 pm

Re: Gl assessment pack 1 test 1 help please

Post by mystery »

Yes, it is not clear what the answer said. The coin tossing is the correct answer as per g55 but it is not clear why two answers were mentioned in that strange way by the o p ?
goldenstar
Posts: 73
Joined: Sun Jan 20, 2013 11:22 am

Re: Gl assessment pack 1 test 1 help please

Post by goldenstar »

GL assessment answer sheet is not good. They miss the correct number and put the next answer to the previous one. Really confusing.
mystery
Posts: 8927
Joined: Tue Jul 21, 2009 10:56 pm

Re: Gl assessment pack 1 test 1 help please

Post by mystery »

That is confusing. I will have to get mine out to see what you mean.
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