Answer:
a) 20%
b) 40%
c) Mean = 62.5 seconds; Variance = 52.083 seconds
Step-by-step explanation:
The time it takes a hematology cell counter to complete a test on a blood sample is continuously distributed over the period of 50 to 75 seconds with probability f(x) = 0.04.
a) The percentage of tests require more than 70 seconds is:

b)The percentage of tests that require less than one minute (60 seconds) is:

c) The mean and variance of a continuous distribution are determined by:

Mean = 62.5 seconds.
Variance = 52.083 seconds.
Answer:
2 1/3
Step-by-step explanation:
Answer: 6 inches
Step-by-step explanation:
The diameter is double the radius
Step-by-step explanation:
g(x) = 3x² + 2x - 1
g(-1) = 3(-1)² + 2(-1) - 1
= 3(1) -2 -1
= 3 - 3
= 0
Answer: x is -2
Steps:
- 1.2x + 2.5 = 0.8x + 6.5
- 1.2x - 0.8x = 6.5 - 2.5
- 2x = 4
x = 4/-2
x = - 2
Brainliest pls if I am correct!