₦airaland Forum

biolabee: round up to 1 decimal place

Ok.
Tenks.

Q3) solution:
first of all, multiply each of the courses mark by its credit load:

Maths= 62*4= 248
Physics= 49*5= 245
Engineering= 72*4= 288
Eng lan= 35*3= 105
Sos std= 21*1= 21

Add all the credit load
==> 4+5+4+3+1= 17

Average grade:
248+245+288+105+21 all over 17
=> 907/17= 53.35%
~53.4%[/quote]Pls how did u get d 53.4%? I understand up to 53.35%

Ortarico: Amen. . . .you're most welcome, it's my field tho.

I concur!!!

Am really grateful.

Hope you wnt mind to assist me with the remaining questions?

Tenks

Ortarico: B. Solution
Let XYZ rep d 3 men
successful targets:
pr(X)= 1/5
pr(Y)= 2/3
pr(Z)= 1/2

prob of unsuccessful targets:
pr(X')= 4/5
pr(Y')= 1/3
pr(Z')= 1/2

i). Sins d 3 events re independnt, Let U= {event dat 1 man hits d target}, note alxo leta "n" rep "intersectn". . . .
Pr(U)= {XnY'nZ'} + {X'nYnZ'} + {X'nY'Z}

U= {1/5*1/3*1/2} + {4/5*2/3*1/2} + {4/5*1/3*1/2}

U= 1/30 + 8/30 + 4/30

U= 13/30 ans. . .


ii). Pr dat d 1st man hit d target givn dat only 1 man hit d target:

Let d event dat only d 1st man hit d target b:
pr(XnU)= Pr(XnY'Z')

==> 1/5*1/3*1/2= 1/30. . .


And pr(U)= 13/30

there4; pr(X/U)= Pr(XnU)/Pr(U)

==> 1/30 / 13/30
==> 1/13 ans. . . .

May God continue to strengthen you even in wisdom and understanding.

Tenks sir.

Ortarico: ^^ ma'am, though your questions are much, i'd try helping. . . .


Q3) solution:
first of all, multiply each of the courses mark by its credit load:

Maths= 62*4= 248
Physics= 49*5= 245
Engineering= 72*4= 288
Eng lan= 35*3= 105
Sos std= 21*1= 21

Add all the credit load
==> 4+5+4+3+1= 17

Average grade:
248+245+288+105+21 all over 17
=> 907/17= 53.35%
~53.4%

Tenk u very much sir. I appreciate.

To all d gurus pls give a helping hand.

Thanks at all

Q3)A a student scores the following marks in his first year: maths- 62%,Physics-49%.Engineering-72%,English Lang-35%,social studies-21%. If the credit loaded attached to each of the courses are 4,5,4,3 and 1 respectively. Determine the student's average grade.

(B) three men shot at a target. The probabilities that the three men can hit the target are respectively 1/5,2/3,and 1/2. Find the probability that: (1)exactly one of them hit the target (11) if only one hits the target,then it was the first.

(C) A,B,C are three mutually exclusive events,one of which is bound to occur. The probability that either B or C occurs is 2/3 and the probability that either A or C occur is 3/5. Find the probability of C occuring.

Thanks

Good day doc, pls can I use bromergon while menstruating?

Thanks in advance,

I greet all the maths gurus in d house ooooo. Please have come again I want you guyz to assist me to solve some statistics questins.am a Mass comm student and I dnt knw anytin abt calcultn(olodo gurl)pls help ur sis oooo.

Q1(A) ND2 class has 20 boys and 16girls, three students are selected frm the class at random one after the other. Find the probability that:
(1) The first two are boys and the third is girl
(11) The first and third are boys while the second is a girl
(111) The first and third are of the same sex while the second is of opposite sex.
(B)Every saturday a fisherman goes to the river,the sea and a lake to catch fishes with probabilities 1/4,1/2,and 1/4 respectively. If he goes to the sea,there is an 80% chance of catching fish,the corresponding figures for the river and the lakes are 40% and 60% respectively. (1) find the probability that he catches fish on a given saturday
(11) If on a particular Saturday he comes home without catching anything,where is it most likely he has been?
(111) His friend who is also a fisherman chooses any of the three locations with equal probabilities. Find the probability that the two fishermen will meet atleast once in three weekends (any assumption made should be clearly stated).



Q2(A) fit a regression Y= a+bx by the method of least square to the following sample information

Income '000:-41,65,50,57,96,94,110,30,79,65
Consumption/expenditure '000:-44,60,39,51,80,68,84,34,55,48
Find the level of income if consumption expenditure is 90.

(B)frm the two sets of numbers below which one is more widely dispersed.
A: 2,3,1,4,5,6,7,25,9,8
B: 32,45,40,38,47,50,43,36,44,35

Tenks

Ok. Tenks

Nice one azerman, I will be rounding up my HND programme nxt year,I want to come thre to work before proceeding for my masters over there. Pls what are my chances?.....am also into hair dressing I can make any type of hair.

Tenks.

Waiting.....

I wish

Ghettoguru: The table should be something like this. Re-check coz I checked the data only once.

Mark rage: 11 - 20, Frequency : 12 students
Mark rage: 21 - 30, Frequency : 11 students
Mark rage: 31 - 40, Frequency : 10 students
Mark rage: 41 - 50, Frequency : 7 students
Mark rage: 51 - 60, Frequency : 5 students
Mark rage: 61 - 70, Frequency : 2 students
Mark rage: 71 - 80, Frequency : 1 student
Mark rage: 81 - 90, Frequency : 2 students

At last. Tenk u so much and God bless

Nice one

Nobody is willing to help.

Tenks

ositadima1: Estilo, the easiest way is to first make a data range/frequency table. Make the table with two columns. Now, for data range, since you have a wide data you can make it 0-10, 11-20, 21-30 and so on. For the frequency part you put in tally every time you have a number falling in a particular range, for simplisity when you have four tallies then you cross the fift to group it in chunks of five. You may want to cross out any number you tallied to avoid counting it multiple times.

Tenks for the attempt. Pls am a mass comm student nd I dnt knw anytin abt calculation,but statistics is compulsory for me dis semester. Why am saying dis is for you to come down to my level.

Since 12 is d least nomba, I used 10-20,20-30..... And as per d frequency am aving problem dere pls explain to me in a simpler way.

Tenks

Maths Gurus in d house pls kindly help me out on dis.
The data below indicates the mass disribution score by 50 students in a test:15,16,44,13,17,15,47,27,36,29,38,64,39,46,42,45,29,28,16,12,48,15,26,39,52,37,36,12,27,57,42,56,71,15,23,28,82,29,36,36,82,58,28,62,24,51,37,14,18,38.
Construct a histogram for d table. My problem is how do I group it? I can do d chart myself but to group it I dnt knw how to go abt it.


Tenks

.

Doc, pls can you recommend for me where I can do Mammography Test.

Thanks

Doc, pls can you recommend for me where I can do Mammography Test.

Thanks

You sure?

Me too thank him for his mercy and faithfullness, I made it in the second list.

@ft, nom indigene is N47500

Catch ya

kelly d:
hi guyz,

Any latest info about admisions to poly ibadan?
post mpce results is out and my own results (though i haven"t seen any other)
post mpce results: NORMAL.
admission status: UNDER PROCESSING.

some one please reply to this cuz i don't understand
yours kelly d

You mean they wrote these - Post Mpce result: NORMAL instead of your score i.e 170

Can you please clarify?

@adeprof, did you reside in Ago Iwoye side?

Can you help me to get the Post Ume Form?

Await your reply.

Esther

The source said since Sunday when a PDP chieftain (names withheld) and a Senior Advocate of Nigeria (SAN) visited George, he had been happy.

He suspected that the man has been assured of victory in the Appeal Court “because, he now eats regularly, prays, sings and crack jokes.

He ought to be stoned to death

Rubbish

Sup, my name is not there o, I sidon dey wait for the 2nd list.

I just pray that Ibadan should not Bleep up.

Thanks

As a matter of urgency, they need to go format their brains.

Nonsense

ADMISSION LIST FOR 2009/2010 FIRST BATCH (ND FULL TIME ) IS OUT.

Goodluck.

Okay. I will contact you now.


Thanks.

Juror please I urgently need OAU Result checker Card.

Do you still have any with you for sale or if possible can you help me to get it.

ITS VERY URGENT