Answer:
80
Step-by-step explanation:
PEMDAS
multiply 2x2=4 and simplify the equation by looking for like terms to combine.
4+16x+y+34=0
4 and 34 are like terms so add them.
the simplified expression is 16x+y+38
In pseudocode
num2guess = random(1,100)
pnum = 0
while (pnum != num2guess) {
pnum = ask_player("What number I'm thinking?")
if (pnum > num2guess) {
print("Too high.")
} else if (pnum < num2guess) {
print("Too low.")
}
}
print("Good job!")
Answer:
A sample size of 128 is needed.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the margin of error M as such
In which 
is the standard deviation of the population(square root of the variance) and n is the size of the sample.
How large should a sample be if the margin of error is 1 minute for a 93% confidence interval
We need a sample size of n, which is found when 
. We have that 
. So
Rounding up
A sample size of 128 is needed.
The answer is A. 67 , hope this helps
