Answer:
1/8
Step-by-step explanation:
kickball, volleyball, soccer, or free play = 4 choices
upper field or the lower field. = 2 choices
They have a total of 4*2 = 8 choices
We want 1 choice
That is 1 out of the 8 choices
1/8
Answer: −42 7/
8
Step-by-step explanation:
Answer:
Probability that the sample variance exceeds 3.10 is less than 0.05%.
Step-by-step explanation:
We are given that a process produces batches of a chemical whose impurity concentrations follow a normal distribution with a variance of 1.75.
Also, a random sample of 20 of these batches is chosen.
The probability distribution that we will used here is of Chi-square distribution, i.e.;
~
where,
= sample variance
= population variance = 1.75
n = sample of batches = 20
So, probability that the sample variance exceeds 3.10 is given by = P(
> 3.10)
P(
> 3.10) = P(
>
)
= P(
> 59.62) = P(
> 59.62) = Less than 0.05%
From chi-square table we can observe that Probability that
is greater than is less than 0.05%.
So, the probability that the sample variance exceeds 3.10 is less than 0.05%.
Answer:
no solution
Step-by-step explanation:
-5x + x + 9 = -4x + 12 [combine like terms]
-4x + 9 = -4x +12 add 4x to both sides]
9=12 is no solution