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.
Multiply 64 times .30 =?
Then take the answer you get and subtract it from $64 then you should get your answer of $44.80 please work it out it’s not too hard it is actually pretty easy.
Hope this helps
Answer:
simplify the expression: 6x+5y
Step-by-step explanation:
Answer:
<h3>Option B) Both sides are exactly the same is correct</h3><h3>The equation 2x +3=3+2x is exactly same on both the sides</h3>
Step-by-step explanation:
Given that looking at Yari's equation below,
2(x + 10)-17=5+2x-2
<h3>To notice about both the sides of the equation :</h3>
Her steps are
2(x + 10)-17=5+2x-2
2(x)+2(10)-17=3+2x ( by using the distributive property and adding the like terms )
2x + 20-17=3+2x ( simplifying the terms )
2x +3=3+2x
From the above equation we notice that the LHS=RHS
<h3>Therefore the Option B) Both sides are exactly the same is correct</h3><h3>Therefore the equation 2x +3=3+2x is exactly same on both the sides</h3>