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itsmichelle29

  • one year ago

In a study of 225 adults, the mean heart rate was 72 beats per minute. Assume the population of heart rates is known to be approximately normal with a standard deviation of 10 beats per minute. What is the 90% confidence interval for the mean beats per minute? 70.7 − 73.3 70.9 − 73.1 70.7 − 73.1 70.9 − 73.3

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  1. itsmichelle29
    • one year ago
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    Help plz

  2. anonymous
    • one year ago
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    b

  3. itsmichelle29
    • one year ago
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    help did u get it

  4. anonymous
    • one year ago
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    ?

  5. itsmichelle29
    • one year ago
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    so u dont know and ur giving random answers

  6. anonymous
    • one year ago
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    i do its b

  7. itsmichelle29
    • one year ago
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    How ?

  8. anonymous
    • one year ago
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    im kinda helping someone else rn, but you can wait for someone else to answer if you dont believe me

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