Answer:
it must always have one of the sign
The manager of an amusement park recorded the number of visitors to the park. There were 800 visitors on Saturday, and 1,100 vis
1 answer:
The percentage change from the number of park visitors on Saturday
to the number of park visitors on Sunday is 37.5%
Step-by-step explanation:
The percentage of change from A to B is:
The percentage of change = × 100%
The manager of an amusement park recorded the number of visitors
to the park
- There were 800 visitors on Saturday
- There were 1,100 visitors on Sunday
We need to find the percentage change from the number of park
visitors on Saturday to the number of park visitors on Sunday
∵ The number of park visitors on Saturday = 800
∵ The number of park visitors on Sunday = 1,100
- Use the rule of the percentage change above
∴ The percentage change from the number of park visitors on
Saturday to the number of park visitors on Sunday =
× 100%
∴ The percentage of change = 37.5%
The percentage change from the number of park visitors on Saturday
to the number of park visitors on Sunday is 37.5%
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Answer:
a) No
b) 42%
c) 8%
d) X 0 1 2
P(X) 42% 50% 8%
e) 0.62
Step-by-step explanation:
a) No, the two games are not independent because the the probability you win the second game is dependent on the probability that you win or lose the second game.
b) P(lose first game) = 1 - P(win first game) = 1 - 0.4 = 0.6
P(lose second game) = 1 - P(win second game) = 1 - 0.3 = 0.7
P(lose both games) = P(lose first game) × P(lose second game) = 0.6 × 0.7 = 0.42 = 42%
c) P(win first game) = 0.4
P(win second game) = 0.2
P(win both games) = P(win first game) × P(win second game) = 0.4 × 0.2 = 0.08 = 8%
d) X 0 1 2
P(X) 42% 50% 8%
P(X = 0) = P(lose both games) = P(lose first game) × P(lose second game) = 0.6 × 0.7 = 0.42 = 42%
P(X = 1) = [ P(lose first game) × P(win second game)] + [ P(win first game) × P(lose second game)] = ( 0.6 × 0.3) + (0.4 × 0.8) = 0.18 + 0.32 = 0.5 = 50%
e) The expected value
f) Variance
Standard deviation
Answer: y=-13/12x-7
Step-by-step explanation:
To find the slope-intercept form, we first need to find the slope. To find the slope, you use the formula . We use the two given points to find the slope.
Now that we have our slope, we can start filling out the slope-intercept form equation.
y=mx+b
y=-13/12x+b
Since we don't know the y-intercept, we can use one of the given points and solve for b.
6=(-13/12)(-12)+b [multiply (-13/12) and -12]
6=13+b [subtract both sides by 13]
b=-7
With the y-intercept, we can complete our equation.
y=-13/12x-7