<span>the median(300) = mode(300)</span>
Answer:
The probability that a call last between 4.2 and 4.9 minutes is 0.4599
Step-by-step explanation:
Let X be the length in minutes of a random phone call. X is a normal distribution with mean λ=4.2 and standard deviation σ=0.4. We want to know P(4.2 < X < 4.9). In order to make computations, we will use W, the standarization of X, given by the following formula
We will use , the cummulative distribution function of W. The values of are well known and the can be found in the attached file
We conclude that the probability that a call last between 4.2 and 4.9 minutes is 0.4599
0 <span>= -14 Hope this helps!</span>
Answer:
5x+6 =-4
x = -2
Step-by-step explanation:
product of 5 and a number x
5x
six more than
5x+6
is means equal
5x+6 =-4
Subtract 6 from each side
5x+6-6 = -4-6
5x= -10
Divide by 5
5x/5 = -10/5
x= -2