Answer:
Step-by-step explanation:
You haven’t provided the choice of methods!
Note that 3/20 can be scaled to a fraction that has a denominator of 100, making it easy to write the fraction as a decimal.
3/20 = 15/100 = 0.15
Answer:
Yes, they are equivalent
Step-by-step explanation:
Remember equivalent means equal
23 + 15 and 15 + 23 are the same numbers, you can switch them around by using the commutative property.
23 + 15 = 38
15 + 23 = 38
Answer:
Mean = 0.38082 checks per day
Variance = 0.38082
Standard deviation = 0.61711
Step-by-step explanation:
In a Poisson distribution, the variance (V) is equal to the mean value (μ), and the standard deviation (σ) is the square root of the variance.
A year has 365 days,, if 139 checks were written during a year, the mean number of checks written per day is:

Therefore, the variance and standard deviation are, respectively:

Let the number be n. Then 5n + 4 = n. simplifying, 4n = -4, and n = -1
(answer)