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Mathematics 9 Online
rebeccaxhawaii (rebeccaxhawaii):

yay math

rebeccaxhawaii (rebeccaxhawaii):

Carl conducted an experiment to determine if there is a difference in the mean body temperature between men and women. He found that the mean body temperature for a sample of 100 men was 91.1 with a population standard deviation of 0.52 and the mean body temperature for a sample of 100 women was 97.6 with a population standard deviation of 0.45. Assuming the population of body temperatures for men and women is normally distributed, calculate the 98% confidence interval and the margin of error for the mean body temperature for both men and women. Using complete sentences, explain what these confidence intervals mean in the context of the problem.

candycove (candycove):

(:

rebeccaxhawaii (rebeccaxhawaii):

@agent0smith

OpenStudy (chrisisdope1):

Algebra 2?

OpenStudy (yaya.its.me):

ARE YOU GOOD IN MATH CAUSE I NEED HELP @rebeccaxhawaii

OpenStudy (mathmusician):

These are confidence intervals right

rebeccaxhawaii (rebeccaxhawaii):

correct

OpenStudy (agent0smith):

We did one of these last night

rebeccaxhawaii (rebeccaxhawaii):

2.33?

OpenStudy (mathmusician):

I think your right z = 2.33

OpenStudy (agent0smith):

for 98% \[\large mean \pm 2.33*\frac{ s.d. }{ n }\]sd is st deviation, n is number of people in sample

rebeccaxhawaii (rebeccaxhawaii):

why would 96%=1.96 and 98%=2.33

OpenStudy (agent0smith):

because z scores.

rebeccaxhawaii (rebeccaxhawaii):

oh duh. thanks. okay wait.

rebeccaxhawaii (rebeccaxhawaii):

so we do it for both the females and males

rebeccaxhawaii (rebeccaxhawaii):

whats the difference between|dw:1462818755868:dw|and|dw:1462818791031:dw|

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