Answer:
The mistake is he said"The equation has infinitely many solutions."
But based on what he was solving for, this equation does not have any solutions, so that's his mistake.
Answer:
i believe the answer is 44
hope this helped
Answer:
Step-by-step explanation:
Hello!
The Confidence intervals for the population mean to follow the structure "point estimation"±" margin of error"
You as the store owner took a sample to determine the average amount of money a typical customer spends on your shop.
n= 26 customers.
X[bar]= $77.506
S= $11.0714
Assuming the variable X: the amount of money spent by a typical customer has a normal distribution and that there is no information about the population standard deviation, the best statistic to use for this estimation is a Students-t:
[X[bar] ±
*
]

The margin of error of the interval is:
d=
* 

d= 6.051
I hope it helps!
Answer:
20
Step-by-step explanation:
We can use similar triangles
12/3 = x/5
x = 20