Answer:
The required probability is 0.031918.
Step-by-step explanation:
Consider the provided information.
It is given that According to an article in The Wall Street Journal, this theory held for 22 out of the last 34 years.
Therefore n=34
The probability it is either up or down is 0.5.
Thus the value of p =0.5 and q = 0.5
Now calculate the probability
Let X is the number of years that theory held.
X has a binomial distribution with n=34 and p=0.5

Hence, the required probability is 0.031918.
Answer:
7x
Step-by-step explanation:
Since she travels x miles a day, she will travel 7x miles a week because there are 7 days a week
X^2=256
x=±√256
x=±16
x=-16 and 16
Idkk dmh shi fw food demic
6x^4 + 3x^3 - 39x^2 - 15x