m= 70/27 simplified m= 2 16/27
Answer:
74.1
Step-by-step explanation:
74.05 rounds to 74.1
Answer:
Step-by-step explanation:
We want to construct a 90% confidence interval for the mean content of this brand of buffered aspirin.
Number of sample, n = 25
Mean, u = 325.05 mg
Standard deviation, s = 0.5 mg
For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.
We will apply the formula
Confidence interval
= mean ± z × standard deviation/√n
It becomes
325.05 ± 1.96 × 0.5/√25
= 325.05 ± 1.96 × 0.1
= 325.05 ± 0.196
The lower end of the confidence interval is 325.05 - 0.196 =324.854
The upper end of the confidence interval is 325.05 + 0.196 =325.246
Therefore, with 95% confidence interval, the mean content of this brand of buffered aspirin is between 324.854 mg and 325.246 mg
Answer:
The price per pound of gummy bears is $3.20 and the price per pound of jelly beans is $7.50
Step-by-step explanation:
Let
x ----> the price per pound of gummy bears
y ----> the price per pound of jelly beans
we know that
-----> equation A
-----> equation B
Solve the system by graphing
Remember that the solution is the intersection point both graphs
using a graphing tool
The solution is the point (3.2,7.5)
see the attached figure
therefore
The price per pound of gummy bears is $3.20 and the price per pound of jelly beans is $7.50
Answer: - n/35+n/45=2.5 or just 49.22
Step-by-step explanation:
use the formulas t total=t1+t2 and V=n/t
n=distance, V=speed, and t=time
35=n/t1, and t1=n/35
her train ride follows the same path at 45mph
45=n/t2, and t2=n/45, so then you get - n/35+n/45=2.5
Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great rest of Black History Month! :-)
- Cutiepatutie ☺❀❤
