ueskman: Another one


In a random sample of 400 high school teachers in a state the mean income s #20,054 and d standard deviation, #3750. Do these data suggest that the mean salary over all such teachers in the state s greater than #20,000?

ueskman: Another one


In a random sample of 400 high school teachers in a state the mean income s #20,054 and d standard deviation, #3750. Do these data suggest that the mean salary over all such teachers in the state s greater than #20,000?

HABRUZZY: kindly assist
In an examination in statistics Ade's mark in standard units is 0.10.Marks are assumed to be normally distributed.What percentage of the students would be expected to score higher than Ade.

HABRUZZY: kindly assist
In a local council election 55% of the voters are in favour of a certain candidates:if in a sample of 81 the proportion in favour of the candidate is 1/2,does the result show any significant difference from expectation?using 5%level of significance.

ueskman: Another one


***a.)generate the sample space of tossing a coin four times


B. State and explain four method of sampling

benbuks:


to generate sample space for tossing a coin ,

=> N(S) = 2 ^n

for single toss , => N(S)= 2^1 =2 .....( number of sample points )

=> S= { H ,T}

for double toss , => N(S)= 2^2 =4 .......(number of sample points )

=> S = { HH , TT, HT , TH }

for tipple toss , => N(S) = 2^3 = 8 sample points

=> S={ HHH,TTT, HHT, HTH, THH, TTH , THT , HTT }


thus for four times toss , => 2^4 = 16 sample points ) ,

=> S={HHHH , TTTT, HHHT . HHTH , HTHH , THHH , TTTH , TTHT , THTT , HTTT , THTH , HTHT , TTHH , HHTT , THHT , HTTH }




2nd ......(Google is your friend bro..)

ueskman: mathemgicians in d house, help with this o




A.)Fit a forecasting model to the following times series data



Year and production
1977 and 11
1978 and 13
1979 and15
1980 and14
1981 and15
1982 and16
1983 and16
1984 and17
1985 and 18


B.) Forecast for

i)1990
ii)1995

benbuks: try

$cos^4 x . sin^3 x dx

asap.

HABRUZZY: Benbuks pls check mine above pls

benbuks: try

$cos^4 x . sin^3 x dx

asap.

benbuks:

ok......that should be later ,

i"ll get back to you bruv..

its >3days ur posting dis question ...weren't you taught ? or dont u av statistics txt book..? also try it yourself bro...or meet sm1 around u 2 put u through . but not post all your assignments questions all the time nt that your question is tough ,

though i"ll help you sha.......mayb later or tomorrow..


1luv

HABRUZZY: kindly assist
In a local council election 55% of the voters are in favour of a certain candidates:if in a sample of 81 the proportion in favour of the candidate is 1/2,does the result show any significant difference from expectation?using 5%level of significance.

kindly assist
In an examination in statistics Ade's mark in standard units is 0.10.Marks are assumed to be normally distributed.What percentage of the students would be expected to score higher than Ade.

The weighs of hens eyes are normally distributed with mean 50g and standard deviation 10g.eggs that weigh less than 40g are classified as small while weigh above 65g are classified as large .those which weigh between 40g and 60g are called standard .how many eggs out of 100 will be small and how many will be large?help help

thanks alot

benbuks:

Q3.

using

z=( x-u)/ s.d

pr(x>65) =1 - (x-u)/s.d

z=(65-50)/10 =1.5

pr(x>65) = 1- @(1.5)

or pr(z>1.5) =0.5 - the area you got

use a calculator/ four figure table to check that

now number of eyes that are large out of 100 lot

= 100 * the answer you got above .


similarly

pr(40<x<60) = [(40-50)/10 < (60-50)/10 ]

=> @(-1)<@(1)

also check that with a cal.

then 100*the answer you got will be small

that's it

rest loading........ maybe later .

benbuks: this is now assignment dumping ground . ...,

(maybe will starting charging some folks for solving their assignment ) . hmm .

smurfy:

You're not helping (some of) this people. Remember what you did to get here. Make them study. When you suspect someone's dumping his/her assignments on the thread, then it's time to...

smurfy:

You're not helping (some of) this people. Remember what you did to get here. Make them study. When you suspect someone's dumping his/her assignments on the thread, then it's time to...

AlphaMaximus: Given that b, u and c are vectors and that (b×u)+u=c, solve for u.

HABRUZZY: kindly assist
In a local council election 55% of the voters are in
favour of a certain candidates:if in a sample of 81 the
proportion in favour of the candidate is 1/2,does the
result show any significant difference from
expectation?using 5%level of significance. kindly assist
In an examination in statistics Ade's mark in
standard units is 0.10.Marks are assumed to be
normally distributed.What percentage of the students
would be expected to score higher than Ade.

HABRUZZY: pls

smurfy:

You're not helping (some of) this people. Remember what you did to get here. Make them study. When you suspect someone's dumping his/her assignments on the thread, then it's time to...

HABRUZZY: please our mathematicians in the house i don't really like dropping assignments for people to do for me but after many trials and no solution i post the questions here will be glad if you all can assist thanks alot

johnpaul1101: Good afternoon all gurus present........plz i would like to confirm something important from you guys; i'm preparn for nxt year jamb but i dnt know whose subjects to focus on as i would like to study medicine. i know i have to write test for english, biology, chemistry, and one other. i would like to write maths but a frnd of mine said i would rather write physics. plz wat should i do

benbuks: ok bro we get you now , other generals will do justice to your questions dono why am kinda lazy / reluctant to solve this days

abeg my generals lets help this dude , i perceive he's really wiling to learn , any with ideas about his questions could help .

at least i don try solve some .


1heart/luv.