Answer:
option (c) n = 201
Step-by-step explanation:
Data provided in the question:
Standard deviation, s = 5.5 ounce
Confidence level = 99%
Length of confidence interval = 2 ounces
Therefore,
margin of error, E = (Length of confidence interval ) ÷ 2
= 2 ÷ 2
= 1 ounce
Now,
E = ![\frac{zs}{\sqrt n}](https://tex.z-dn.net/?f=%5Cfrac%7Bzs%7D%7B%5Csqrt%20n%7D)
here,
z = 2.58 for 99% confidence interval
n = sample size
thus,
1 = ![\frac{2.58\times5.5}{\sqrt n}](https://tex.z-dn.net/?f=%5Cfrac%7B2.58%5Ctimes5.5%7D%7B%5Csqrt%20n%7D)
or
n = (2.58 × 5.5)²
or
n = 201.3561 ≈ 201
Hence,
option (c) n = 201
X should be 3,
because 8x means 8 times what number.
So 8x must be 3.
8 times 3 = 24. 24 +5 = 29.
Hope you Understand :) !
Answer:
m=13
Step-by-step explanation:
Ok
l8ml=104
8m=104
⁻⁻⁻ ⁻⁻⁻
8 8
m=13
You can use lattice multiplication or long multiplication. for examples and/or visuals message me.
Step-by-step explanation:
-(-3x-5)=7x
3x+5=7x
4x=5
x=5/4