Answer:
Hummingbird can flying front and backward too and they wings beat fast.
Answer:
The number of needed subjects to estimate the mean HDL= 31
Explanation:
Given that:
. standard deviation, s= 11.6
. Margin of error, ME = 2
s= 11.6
ME = 2
. The 90% margin of error is defined as:
ME = Z₀,₉÷₂ X σ÷√η
coeficient = (0,90/2)
2= 1.645 x 11.6/√η
√η= (1.645 x 11.6)÷ 2
η= √9.541
η= 30.888
η≈31
Teens should be able to make their own decisions to an extent but you can’t boss them around to much it causes then stress and they deal with more than adults actually think. That will lead to misbehavior and other negative actions so let the teen be free about it u less u see it causing them harm then you can step in
