itsmichelle29
  • itsmichelle29
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
Mathematics
chestercat
  • chestercat
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itsmichelle29
  • itsmichelle29
Help plz
anonymous
  • anonymous
b
itsmichelle29
  • itsmichelle29
help did u get it

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anonymous
  • anonymous
?
itsmichelle29
  • itsmichelle29
so u dont know and ur giving random answers
anonymous
  • anonymous
i do its b
itsmichelle29
  • itsmichelle29
How ?
anonymous
  • anonymous
im kinda helping someone else rn, but you can wait for someone else to answer if you dont believe me

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