anonymous
  • anonymous
A company offered one half of its employees a bonus if the production of gears increased by 50%. The other half of the employees was not offered a bonus. As the end of the month, production in the group that did not get the bonus offer increased by a mean of 20 and production in the bonus group increased by a mean of 40. What is the correct order of steps to determine if the results are significant? A: Calculate the probability of a difference of 20. B: Randomly separate the employees’ individual results into two groups. C: Calculate the mean of each group. D: Calculate the differen
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
B, C, E, A, D A, B, C, E, D B, C, D, E, A A, B, C, D, E
anonymous
  • anonymous
i think it's "A"
anonymous
  • anonymous
@Nnesha

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anonymous
  • anonymous
me to
anonymous
  • anonymous
@tylermj325
anonymous
  • anonymous
thank you @MariahDimond
anonymous
  • anonymous
@sasogeek @sleepyjess
anonymous
  • anonymous
your welcome. :)
anonymous
  • anonymous
@alejandro1300 @ashton_gates2131
anonymous
  • anonymous
oh i forgot to post the step E
anonymous
  • anonymous
E: Run the experiment many times.
anonymous
  • anonymous
@Nnesha @Hero @campbell_st @johnweldon1993 @Maddy95 @mathmate
anonymous
  • anonymous
lol @MeowLover17 @happyrosy @flawlessswag @The_Joker<3 @keshaun455 @ndavis
anonymous
  • anonymous
thank you for tagging these people for me @MariahDimond
anonymous
  • anonymous
lol np
anonymous
  • anonymous
@jim_thompson5910
anonymous
  • anonymous
thx
Nnesha
  • Nnesha
why do think it's A ?
anonymous
  • anonymous
because the difference is calculated after running the experiment again, i think i'm not sure.
anonymous
  • anonymous
I posted the last order but in case you didn't see it.
anonymous
  • anonymous
What is the correct order of steps to determine if the results are significant? A: Calculate the probability of a difference of 20. B: Randomly separate the employees’ individual results into two groups. C: Calculate the mean of each group. D: Calculate the difference of the means. E: Run the experiment many times.
anonymous
  • anonymous
B, C, E, A, D A, B, C, E, D B, C, D, E, A A, B, C, D, E
anonymous
  • anonymous
A company offered one half of its employees a bonus if the production of gears increased by 50%. The other half of the employees was not offered a bonus. As the end of the month, production in the group that did not get the bonus offer increased by a mean of 20 and production in the bonus group increased by a mean of 40.
Nnesha
  • Nnesha
aww i see thanks http://prntscr.com/7gni3c
Nnesha
  • Nnesha
makes sense i guess you're right
anonymous
  • anonymous
thank you for your help , can you please help me with one more?
Nnesha
  • Nnesha
*depends*
Nnesha
  • Nnesha
word problem or trig ?
anonymous
  • anonymous
Bobby is testing the effectiveness of a new cough medication. There are 100 people with a cough in the study. Seventy patients received the cough medication, and 30 other patients did not receive treatment. Thirty-four of the patients who received the medication reported no cough at the end of the study. Twenty of the patients who did not receive medication reported no cough at the end of the study. What is the probability that a patient chosen at random from this study took the medication, given that they reported no cough?
anonymous
  • anonymous
63% 53% 38% 43%
anonymous
  • anonymous
sorry my internet turned off
anonymous
  • anonymous
@Nnesha
Nnesha
  • Nnesha
ahh still confusd abt first one
anonymous
  • anonymous
you think it's the fist choice?
Nnesha
  • Nnesha
well first of all you have to divide into two groups
Nnesha
  • Nnesha
so its either A or C
anonymous
  • anonymous
that's what i'm stuck at the answer is either a or c ! do you think i should choose "A"
Nnesha
  • Nnesha
ahahha i'm not good at guessing always stuck 't 2 option and 99% i pick the wrong one :P
anonymous
  • anonymous
it's ok , i'm going with "A" and see if it's right and i'll let you know if you want
Nnesha
  • Nnesha
i guess by *difference * doesn't meant the difference before and after the experiment difference = subtraction too :(
Nnesha
  • Nnesha
alright GO_OD luck!
anonymous
  • anonymous
@Nnesha so you're saying A make sense?
Nnesha
  • Nnesha
nope i'm just guessing :o why it can't be C ?
Nnesha
  • Nnesha
alright just pick A but it can be C ....
anonymous
  • anonymous
so it can be both?
Nnesha
  • Nnesha
A or C one of them is right :-)
anonymous
  • anonymous
can you please help me with the last question? i have already answered it
anonymous
  • anonymous
@Nnesha
Nnesha
  • Nnesha
well i'm not good at probability stuff sorry @jim_thompson5910 100% he can help !
anonymous
  • anonymous
i hope so , thank you so much @Nnesha
anonymous
  • anonymous
but where are you from? @Nnesha
jim_thompson5910
  • jim_thompson5910
|dw:1434238989616:dw|
jim_thompson5910
  • jim_thompson5910
"There are 100 people with a cough in the study" |dw:1434239146098:dw|
jim_thompson5910
  • jim_thompson5910
"Seventy patients received the cough medication" "30 other patients did not receive treatment" |dw:1434239184205:dw|
jim_thompson5910
  • jim_thompson5910
"Thirty-four of the patients who received the medication reported no cough at the end of the study" so that leaves 70-34 = 36 people who did have a cough (who took the medicine) |dw:1434239219354:dw|
jim_thompson5910
  • jim_thompson5910
"Twenty of the patients who did not receive medication reported no cough at the end of the study" 30-20 = 10 people had a cough. These people didn't take the medicine |dw:1434239298161:dw|
jim_thompson5910
  • jim_thompson5910
compute the missing totals |dw:1434239319010:dw|
jim_thompson5910
  • jim_thompson5910
"What is the probability that a patient chosen at random from this study took the medication, given that they reported no cough?" so we circle just the "no cough" column since this is given to us. We don't even need to bother with the other columns |dw:1434239381100:dw|
jim_thompson5910
  • jim_thompson5910
there are 34 people who took the medication (and had no cough) out of 54 people who had no cough |dw:1434239483850:dw| 34/54 = 17/27 so P(took medicine|no cough) = 17/27
anonymous
  • anonymous
62.9 = 63%
anonymous
  • anonymous
@jim_thompson5910
jim_thompson5910
  • jim_thompson5910
yeah 17/27 = 63% roughly
anonymous
  • anonymous
would you please help me with two more. i would really appreciate it.
jim_thompson5910
  • jim_thompson5910
I'll help with one more. Post it as a new question so it doesn't clutter up this one
anonymous
  • anonymous
ok thank you.

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