Step-by-step explanation:
If one dollar can buy a bottle of mineral water, then;
$1 = 1 bottle
To determine the amount of mineral water you can drink with at most 20 dollars, we will say;
$20 = x bottle
Solving both equality postulate;
$1 = 1 bottle
$20 = x bottle
Cross multiply
1 * x = 20 * 1
x = 20
Hence about 20 bottles of mineral drink can be bought with at most 20 dollars
I just took the test, the answer is: Fiona's meals are less expensive. :)
Answer:
its called an error
Step-by-step explanation:
Answer:
Answer : (0.1183 ≤ p ≤ 0.3103)
Step-by-step explanation:
Solution :
Given that,
a) n = 70
x = 15
Point estimate = sample proportion (p)= x / n = 15 / 70 = 0.2143
1 - p = 1 - 0.2143 = 0.7857
At 95% confidence level
α = 1 - 95%
α =1 - 0.95 =0.05
α/2 = 0.025
Zα/2 = Z0.025 = 1.960
Margin of error = E = Zα / 2 * √ (( p * (1 - p )) / n)
= 1.96 (√((0.2143 * 0.7857) / 70)
= 0.096
A 95% confidence interval for population proportion p is ,
P - E ≤ p ≤ P + E
0.2143 - 0.096 ≤p ≤ 0.2143 + 0.096
(0.1183 ≤ p ≤ 0.3103)
Y=3x-2 because (0,-2) is the y intercept (b) and m is the slope.
