Answer: -15
Step-by-step explanation:
Let the unknown number be 'x'
Using the statement we can form the equation:
4 + x = -11
Now, solve the above equation to get :
4 + x = -11
x = -11 -4
x = -15
The number is -15. To check our answer, substitute for x :
4 + (-15) = -11
4 - 15 = -11
The above equation is correct. Therefore, the number is -15.
When you flip a coin twice, you have a 50/50 chance of it land on heads or tails.
The possible combinations for fliping a coin twice:
HH (heads/heads both times)
T/H(Tails/Heads)
H/T(Heads/Tails)
or the one you're looking for...
T/T (Tails/Tails both times)
You have a 1/4 chance of getting tails both times.
Answer:
13
Step-by-step explanation:
Take any two corresponding values, say (3,7) and (9,16)
Calculate the gradient of the linear function
Gradient=[16-7]/[9-3]=9/6=3/2
find the equation or rule of the linear mapping
y-7=(3/2)(x-3)
y=3x-9+7
y=(3/2)x+5/2
Answer:
a) 
b) Null hypothesis:
Alternative hypothesis: 
And we can use a t test procedure in order to check if the true mean is equat to the desired value.
Step-by-step explanation:
For this case we know that this:
Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69.5 bpm
Part a
If we convert this with symbols we can write this as:
Part b
We have the following info given:
represent the sample mean
represent the sample size
We have the following system of hypothesis:
Null hypothesis:
Alternative hypothesis:
And we can use a t test procedure in order to check if the true mean is equat to the desired value.
