Answer:
(-5x)^4
Step-by-step explanation:
Answer:
the probability that the sample variance exceeds 3.10 is 0.02020 ( 2,02%)
Step-by-step explanation:
since the variance S² of the batch follows a normal distribution , then for a sample n of 20 distributions , then the random variable Z:
Z= S²*(n-1)/σ²
follows a χ² ( chi-squared) distribution with (n-1) degrees of freedom
since
S² > 3.10 , σ²= 1.75 , n= 20
thus
Z > 33.65
then from χ² distribution tables:
P(Z > 33.65) = 0.02020
therefore the probability that the sample variance exceeds 3.10 is 0.02020 ( 2,02%)
Ok use a calculator and do 11 x 11 x 4 then 7 x 7 x 4 and add the products
Answer:
10.5 is really 10.50 the . 5 is half the whole one unit, like 50 cents is half a dollar
A credit history shows how well you pay back debt. So a positive one allows the bank to consider you a good risk to give money to
