Answer:
The variance for the number of tasters is 4.2
Step-by-step explanation:
For each person, there are only two possible outcomes. Either they are tasters, or they are not. The probability of a person being a taster is independent of any other person. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
Probability of exactly x sucesses on n repeated trials, with p probability.
The variance of the binomial distribution is:
It is known that 70% of the American people are "tasters" with the rest are "non-tasters". Suppose a genetics class of size 20
This means that
So
The variance for the number of tasters is 4.2
Answer:
First fund: $4000
second account: $2000
Step-by-step explanation:
invest x for first fund (A) and y for second fund (B)
interest for A: x * 0.05
interest for B: y * 0.09
0.05 x + 0.09 y = 380 ....(1)
x + y = 6000 ..... (2)
y = 6000 - x ....substitute y in (1)
0.05 x + 0.09 (6000 - x) = 380
0.05x + 540 - 0.09x = 380
0.04 x = 160
x = 4000
y = 6000 -4000 = 2000
check: 4000 x 0.05 + 2000 x 0.09 = 200 + 180 = 380
Answer:
Step-by-step explanation:
Let "n" be the second odd number in the sequence
(n - 2) + n + (n + 2) + (n + 4) + (n + 6) = 135
5n + 10 = 135
5n = 125
n = 25
23 + 25 + 27 + 29 + 31 = 135
(a)(b) = x
a = -65
b = 8
(-65)(8) = x
x = -520
x = -520 is your answer
hope this helps
The answer is A
85.6-61.1/ 5-0 = 4.9
105.2 - 85.6 / 9-5 = 4.9
Y= 4.9x
Hope this helps!