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anonymous

  • one year ago

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

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  1. anonymous
    • one year ago
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    B, C, E, A, D A, B, C, E, D B, C, D, E, A A, B, C, D, E

  2. anonymous
    • one year ago
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    i think it's "A"

  3. anonymous
    • one year ago
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    @Nnesha

  4. anonymous
    • one year ago
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    me to

  5. anonymous
    • one year ago
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    @tylermj325

  6. anonymous
    • one year ago
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    thank you @MariahDimond

  7. anonymous
    • one year ago
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    @sasogeek @sleepyjess

  8. anonymous
    • one year ago
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    your welcome. :)

  9. anonymous
    • one year ago
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    @alejandro1300 @ashton_gates2131

  10. anonymous
    • one year ago
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    oh i forgot to post the step E

  11. anonymous
    • one year ago
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    E: Run the experiment many times.

  12. anonymous
    • one year ago
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    @Nnesha @Hero @campbell_st @johnweldon1993 @Maddy95 @mathmate

  13. anonymous
    • one year ago
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    lol @MeowLover17 @happyrosy @flawlessswag @The_Joker<3 @keshaun455 @ndavis

  14. anonymous
    • one year ago
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    thank you for tagging these people for me @MariahDimond

  15. anonymous
    • one year ago
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    lol np

  16. anonymous
    • one year ago
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    @jim_thompson5910

  17. anonymous
    • one year ago
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    thx

  18. Nnesha
    • one year ago
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    why do think it's A ?

  19. anonymous
    • one year ago
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    because the difference is calculated after running the experiment again, i think i'm not sure.

  20. anonymous
    • one year ago
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    I posted the last order but in case you didn't see it.

  21. anonymous
    • one year ago
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    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.

  22. anonymous
    • one year ago
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    B, C, E, A, D A, B, C, E, D B, C, D, E, A A, B, C, D, E

  23. anonymous
    • one year ago
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    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.

  24. Nnesha
    • one year ago
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    aww i see thanks http://prntscr.com/7gni3c

  25. Nnesha
    • one year ago
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    makes sense i guess you're right

  26. anonymous
    • one year ago
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    thank you for your help , can you please help me with one more?

  27. Nnesha
    • one year ago
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    *depends*

  28. Nnesha
    • one year ago
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    word problem or trig ?

  29. anonymous
    • one year ago
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    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?

  30. anonymous
    • one year ago
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    63% 53% 38% 43%

  31. anonymous
    • one year ago
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    sorry my internet turned off

  32. anonymous
    • one year ago
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    @Nnesha

  33. Nnesha
    • one year ago
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    ahh still confusd abt first one

  34. anonymous
    • one year ago
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    you think it's the fist choice?

  35. Nnesha
    • one year ago
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    well first of all you have to divide into two groups

  36. Nnesha
    • one year ago
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    so its either A or C

  37. anonymous
    • one year ago
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    that's what i'm stuck at the answer is either a or c ! do you think i should choose "A"

  38. Nnesha
    • one year ago
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    ahahha i'm not good at guessing always stuck 't 2 option and 99% i pick the wrong one :P

  39. anonymous
    • one year ago
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    it's ok , i'm going with "A" and see if it's right and i'll let you know if you want

  40. Nnesha
    • one year ago
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    i guess by *difference * doesn't meant the difference before and after the experiment difference = subtraction too :(

  41. Nnesha
    • one year ago
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    alright GO_OD luck!

  42. anonymous
    • one year ago
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    @Nnesha so you're saying A make sense?

  43. Nnesha
    • one year ago
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    nope i'm just guessing :o why it can't be C ?

  44. Nnesha
    • one year ago
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    alright just pick A but it can be C ....

  45. anonymous
    • one year ago
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    so it can be both?

  46. Nnesha
    • one year ago
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    A or C one of them is right :-)

  47. anonymous
    • one year ago
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    can you please help me with the last question? i have already answered it

  48. anonymous
    • one year ago
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    @Nnesha

  49. Nnesha
    • one year ago
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    well i'm not good at probability stuff sorry @jim_thompson5910 100% he can help !

  50. anonymous
    • one year ago
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    i hope so , thank you so much @Nnesha

  51. anonymous
    • one year ago
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    but where are you from? @Nnesha

  52. jim_thompson5910
    • one year ago
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    |dw:1434238989616:dw|

  53. jim_thompson5910
    • one year ago
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    "There are 100 people with a cough in the study" |dw:1434239146098:dw|

  54. jim_thompson5910
    • one year ago
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    "Seventy patients received the cough medication" "30 other patients did not receive treatment" |dw:1434239184205:dw|

  55. jim_thompson5910
    • one year ago
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    "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|

  56. jim_thompson5910
    • one year ago
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    "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|

  57. jim_thompson5910
    • one year ago
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    compute the missing totals |dw:1434239319010:dw|

  58. jim_thompson5910
    • one year ago
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    "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|

  59. jim_thompson5910
    • one year ago
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    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

  60. anonymous
    • one year ago
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    62.9 = 63%

  61. anonymous
    • one year ago
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    @jim_thompson5910

  62. jim_thompson5910
    • one year ago
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    yeah 17/27 = 63% roughly

  63. anonymous
    • one year ago
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    would you please help me with two more. i would really appreciate it.

  64. jim_thompson5910
    • one year ago
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    I'll help with one more. Post it as a new question so it doesn't clutter up this one

  65. anonymous
    • one year ago
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    ok thank you.

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