Ask
your own question, for FREE!
Mathematics
15 Online
OpenStudy (anonymous):
The mean and standard deviation height (in cms) for fifty girls in year 10 at a particular school are 164.3 and 7.49 respectively. The mean height for thirty-six boys is 173.5 cm. If 4 boys of the 36 boys in year 10, are shorter than the mean height for girls find the standard deviation of the boys’ heights. Assume all heights are normally distributed.
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
PLZ help i have know idea what to do
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
DarkRoseCandy:
Just4YouAlways hey.. can you please talk to me im really worried.. please unblock me, i cant tell you have much you mean to me and seeing your profile is fr
jhaseker:
Hey, I'ma do some Q&A for y'all Hottest Planet: Venus, due to its thick atmosphere trapping heat.
unknownnnnnn:
It started quietly. No big fight. No dramatic goodbye. Just longer pauses between replies, fewer plans made, fewer laughs that felt the same.
kuz:
Solve for x: 3(x - 5) = 12 Find the Least Common Multiple (LCM) of 12 and 18. A shirt is originally $40 but is on sale for 25% off.
YABOIEJ67:
I speak without a mouth and hear without ears. I have no body, but I come alive with wind.
DarkRoseCandy:
Just4YouAlways hey.. can you please talk to me im really worried.. please unblock me, i cant tell you have much you mean to me and seeing your profile is fr
2 hours ago
4 Replies
0 Medals
jhaseker:
Hey, I'ma do some Q&A for y'all Hottest Planet: Venus, due to its thick atmosphere trapping heat.
6 hours ago
9 Replies
1 Medal
unknownnnnnn:
It started quietly. No big fight. No dramatic goodbye. Just longer pauses between replies, fewer plans made, fewer laughs that felt the same.
4 hours ago
7 Replies
1 Medal
kuz:
Solve for x: 3(x - 5) = 12 Find the Least Common Multiple (LCM) of 12 and 18. A shirt is originally $40 but is on sale for 25% off.
10 hours ago
4 Replies
0 Medals
YABOIEJ67:
I speak without a mouth and hear without ears. I have no body, but I come alive with wind.
10 hours ago
5 Replies
1 Medal
