Answer:
Step-by-step explanation:
The average number is given by :
[m + (m - 1200) + (m - 1200)(1.30 ] / 3 =
[ 2m + 1.30m - 1200 - 1560] / 3 =
[3.3m - 2760] / 3 =
[1.1 m - 920 ]
Answer:
True
Step-by-step explanation:
y=5x+3
8=5(1)+3
13=5(2)+3
Answer: the required sample size = 155
Step-by-step explanation:
If the standard deviation of the prior study is known, then the formula to compute required sample size:
, where E = Margin of error, z* = Critical value, 
= populion standard deviation.
Given: E = 3.7 , 
Critical value for 90% confidence = 1.645
Required sample size: 
Hence, the required sample size = 155
150 students. there are two hands. therefore, 50% chance of being left handed, 50% chance of being right handed. 50%= half. half of 300=150. 150 students should be expected to be left-handed.
Answer:
855 sorry i miscalculated :c okay stay safe :D
Step-by-step explanation:
enjoy
