Answer:
point lies on circle
Step-by-step explanation:
Substitute the coordinates of the point into the left side of the equation and if equal to the right side then point lies on circle.
(4 - 1)² + (2 + 2)² = 3² + 4² = 9 + 16 = 25 = right side
Then point (4, 2 ) lies on the circle
Answer: The median is 13.5 and the mean is 13.3
Step-by-step explanation:
The median is the middle number when you arrange the data in ascending order. The mean is all the data added up and divided by the number of data points, which is 8. The mean was 13.25, but rounded to the nearest 10th is 13.3.
Answer:
Step-by-step explanation:
Hello!
The variables of interest are
X₁: height of a professional football player
n₁= 45
X[bar]₁= 6.18 feet
S₁= 0.37 feet
X₂: height of a professional basketball player
n₂= 40
X[bat]₂= 6.45 feet
S₂= 0.31 feet
You need to construct a 95%CI to estimate the difference between the mean heights of professional football players and basketball players.
To study the difference between the population means of two variables, you need these to have at least an approximately normal distribution. There is no information about the distributions of the variables so I'll assume that both study variables have a normal distribution and both population variances are equal.
The statistic you have to use to construct the interval is a t-test for independent samples with pooled sample variance:
(X[bar]₁-X[bar]₂)±*(Sa*)
(6.18-6.45)±1.989*(0.34*)
[-0.42;-0.12]
With a 95% confidence level, you'd expect that the interval [-0.42;-0.12]feet with contain the difference between the average height of professional football and basketball players.
I hope you have a SUPER day!
Answer:
-1
Step-by-step explanation:
The product of the slopes of perpendicular lines is always <u> -1 </u>.
Answer:
SO THE AWNSER WILL BE (B)
Step-by-step explanation:
x − y = 7
y = 3x + 12
a
2 over 19 comma 2 over 33
b
negative 2 over 19 comma negative 33 over 2
c
negative 19 over 2 comma negative 33 over 2
d
19 over 2 comma 33 over 2
SO THE AWNSER WILL BE (B)