Answer:
The mean of 50 mg/liter is not inside the 99% interval, so there is not enough evidence to support their claim.
Step-by-step explanation:
First we need to find the z-value for a confidence of 99%
The value of alpha for a 99% confidence is:
Looking in the z-table, we have z = 2.575.
Now we can find the standard error of the mean:
Finding the 99% confidence interval, we have:
The mean of 50 mg/liter is not inside the 99% interval, so there is not enough evidence to support their claim.
Answer:a place that the government controls
Step-by-step explanation:
Answer:
Step-by-step explanation:
Substitution method:
y= -2x + 2
x - 2y = 6
so y = (-2x + 2)
Substitute into y
Hence x - 2y = 6 is:
x + 2x +2 = 6 (+2x because there was - in the equations so -×- = +)
3x + 2=6
Then bring 2 to the other side so
3x = 6-2
3x = 4
x = 3/4 or 0.75
To find y :
y= (-2 × 3/4) + 2
y = -1.5 +2
y = 0.5
That's all I can do for now!
Okay well since it is posivtive moe the decimal to the right the amount of times the power is. 9.203*10^6 ANSWER: 9,203,000
Answer: Library is (2, 5) Park is (2, -3) The answer is 5 and 3
Step-by-step explanation: Hope it helped! :)
