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KJ4UTS

  • one year ago

The percentage of all households in the United States that had a dog as a pet is give...

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  1. KJ4UTS
    • one year ago
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  2. KJ4UTS
    • one year ago
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    @peachpi

  3. KJ4UTS
    • one year ago
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    I got this to be my answer: y=-.802x+1632.889

  4. KJ4UTS
    • one year ago
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    2. Use the regression equation from the previous problem (with constants rounded to three decimal places) to estimate the percentage of households in the United States that had a dog for a pet in 1989 and in 1999. Round the answers to one decimal place. Do not include a percent sign. For 1989 I got 37.7 as my answer For 1999 I got 29.7 as my answer I’m not sure if my answers are correct and I know if the equation is not right then the other answers will be wrong.

  5. anonymous
    • one year ago
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    yeah check the years again. Should be y = -0.8022x + 42.215

  6. KJ4UTS
    • one year ago
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    Ok I see I was probably thinking at the time to put the year for -0.8022 would be -0.802 to be three decimal places. Then do I just plug in 1989 and 1999 into that formula?

  7. anonymous
    • one year ago
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    your answers for B are right

  8. KJ4UTS
    • one year ago
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    But for 1989 and 1999 I used the y=-.802x+1632.889 formula?

  9. anonymous
    • one year ago
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    when you plugged in 1989 and 1999 into the "wrong" formula it worked because that formula used years. To use the "right" formula you'd have to change them to 6 and 16 respectively. It will give you the same result

  10. KJ4UTS
    • one year ago
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    Oh so I will still get 37.7 for 1989 and 29.7 for 1999?

  11. anonymous
    • one year ago
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    right

  12. KJ4UTS
    • one year ago
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    Ok I see thank you again :)

  13. anonymous
    • one year ago
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    you're welcome

  14. KJ4UTS
    • one year ago
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    @peachpi one more question, I plugged in 6 into -0.802(6) + 42.215 and got 37.4 and -0.802(16) + 42.215 and got 29.38 or 29.4 which I think may be the answers because I got 37.7 and 29.7 wrong. Also where does the 6 and 16 come from?

  15. anonymous
    • one year ago
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    Yeah it is 37.4 for 1989 and 29.4 for 1999, I had my rounding on to the whole using years since 1983, so 1989 - 1983 = 6 1999 - 1999 = 16

  16. KJ4UTS
    • one year ago
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    Would that also be for the formula to y=-0.802x + 42.213 instead of .215?

  17. anonymous
    • one year ago
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    no I got .215

  18. KJ4UTS
    • one year ago
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    oh ok just wanted to check

  19. KJ4UTS
    • one year ago
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    Thanks :)

  20. anonymous
    • one year ago
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    you're welcome

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