Question

In a study of 250 adults, the mean heart rate was 70 beats per minute. Assume the population of heart rates is known to be approximately normal with a standard deviation of 12 beats per minute. What is the 99% confidence interval for the mean beats per minute?

Answer 1

@tbonds @coltjoco can one of yall help me

Answer 2

@YanaSidlinskiy

Answer 3

@Prestianne

Answer 4

@lilkennydmg

Answer 5

@YanaSidlinskiy do u think you know how to do it?

Answer 6

Give me a sec:D

Answer 7

ok thank ;-)

Answer 8

the options are 68.9 – 76.3

70 – 72

61.2 – 72.8

68 – 72

Answer 9

Ok. Sorry, with all the notifications, it's crazy! Anyways...
Does this link help?
http://openstudy.com/study#/updates/533cd9dbe4b0cc7d81e054ad

Answer 10

is the answer c

Answer 11

i meant d?

Answer 12

Yes. That's what I'd go with.

Answer 13

@HelpMePrettyPlease4 im so sorry I couldn't respond to u!! :(
I just came bac on now, im really sorry for not being there, im glad u found help