Answer:
205.81 to 214.19
Step-by-step explanation:
Sample size (n) = 50
Sample mean weight (X) = 210 grams
Sample standard deviation (s) = 18 grams
Confidence coefficient (Z) at 90% = 1.645
The confidence interval for the true mean breaking strength of cotton threads of this type, at a 90% confidence level, is given by:

The confidence interval is 205.81 grams to 214.19 grams.
1 cm cant equal 1 km
because 1km = 100 cms
Answer:
1 and 3
Step-by-step explanation:
They are across from each other making them vertical angles.
Answer:
ydhhh
Step-by-step explanation:
1)tiff
2)BBC
3)odds
4)Goss
Answer:
d = 3x²+ 4x - 7
C'est la réponse j'espère que ça aide.