Answer:
c. 0.14
Step-by-step explanation:
Generally, for a given normal distribution, we can estimate the probability of the normal distribution using the equation below:
P (x greater than 
) = pnorm(, mean, sd, lower tail=FALSE)
The following variables are provided in the question:
= 15
n = 30
Therefore:
Mean: E(30*X) = 30(0.47)
Standard deviation: 0.15*
P (y greater than 15) = 1 - pnorm (15, 30*0.47, 0.15*)
P (y greater than 15) = 1 - pnorm (15, 14.1, 0.822) = 0.137
The approximate probability is 0.14
Answer:
- 65 -3x = 55 -2.5x
- 20 periods
- $5
Step-by-step explanation:
The value of the first card starts at $65 and decreases by $3 for each of x periods. Its value is ...
65 -3x
The value of the second card starts at $55 and decreases by $2.50 for each of x periods. Its value is ...
55 -2.5x
The equation that can be used to find x that makes the values equal is ...
65 -3x = 55 -2.5x
__
The solution can be found by adding 3x-55 to both sides of this equation.
10 = 0.5x
Multiplying by 2 gives ...
20 = x
After 20 30-day periods. the cards will have the same value.
__
The value after 20 periods is ...
65 -3×20 = 65 -60 = 5
Both cards will have a value of $5 when they have the same value.
Answer:
wish i coul d help
Step-by-step explanation:
Answer:
He will run 31.6 miles in two weeks.
Step-by-step explanation:
6 days a week = 2.3 miles
6 days · 2 weeks = 12 days total running 2.3 miles
1 day a week = 2 miles
1 day · 2 weeks = 2 days total running 2 miles
(12 · 2.3) + (2 · 2)
27.6 + 4
31.6 miles
Answer:±17.6635217326557
Step-by-step explanation:
