Answer:
The probability that a randomly selected programmer major received a salary less than 38000 is 0,3085
Step-by-step explanation:
We will assume that the salaries are Normally distributed. Lets call X the salary of a random major programmer in dollars. We want the pprobability of X being less than 38000. For it, we will standarize X. Lets call W the standarization, given by the formula
Lets denote 
the cumulative distribution function of the standard normal variable W. The values of are well known and they can be found in the attached file. Now, lets calcualte the probability of X being less than 38000 using
Since the density function of a standard normal random variable is symmetric, then 
The probability that a randomly selected programmer major received a salary less than 38000 is 0,3085.
Answer:
A and C
<em>I hope this helps! ^^</em>
<em></em>
Step-by-step explanation:
The ratio is 459/484.
The percent is:
459/484 × 100%
= 94.83%
The percent left is:
100% − 94.83%
= 5.17%
This can be answered using the following formula for interest:
Let:
F = future value
P = principal value
n = interest period (n = 3)
i = interest percentage
F = P(1 + i)^n
Substituting the given values, we arrive at the following:
F = 3300(1 + 0.04)^3
F = 3712.05
Therefore, after 3 years, the balance in the account will be $3712.05
x = -1
Simply get the variable on one side of the equation alone and simplify:
2x = 5 - 21/3
2x = 15/3 - 21/3
2x = -6/3
2x = -2
x = -1
