Answer:
36
Step-by-step explanation:
since a = -6, we have to multiply -3, -6 and 2,and you get 36
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%.
Think of improper fractions as top heavy. If the numerator is lager than the denominator, then you have an improper fraction. Ex: 12/6 = 2 because 6 goes into 12, two times. Mixed numbers can turn into improper fractions. Ex: 7 2/3 = 23/3 which divides back down to 7 2/3. To create improper fractions from mixed number you multiply the denominator by the whole number and add the numerator to the product of the whole number and denominator. ( 3*7=21+2=23) and you just keep the same denominator to then divide. 23/3 = 7 2/3
The gray line is longer than the white line.
The black line is longer than the gray line.
White -------------------------
Gray ------------------------------------------
Black --------------------------------------------------------
Answer: The black line is longer than the white line.