Answer:
y = 110
z = 70
Step-by-step explanation:
<span>...
| 12: 2 + 4 x (3 +5) =
2 x | 12: 2 + 4 x (3 +5) =
</span> | 12: 2 + 4 x (3 +5) =
-------------------------
2 x 36: 6 + 12 x (9 +15) =
2 x 6 + 12 x 24 =
2 x 6 + 288 =
12 + 288 = 300
Answer:
69 bpm
Step-by-step explanation:
Here we start out finding the z-score corresponding to the bottom 33% of the area under the standard normal curve. Using the invNorm( function on a basic TI-83 Plus calculator, I found that the z-score associated with the upper end of the bottom 33% is -0.43073.
Next we use the formula for z score to determine the x value representing this woman's heart rate:
x - mean x - 75 bpm
z = ----------------- = -0.43073 = --------------------
std. dev. 15
Thus, x - 75 = -0.43073(15) = -6.461, so x = 75 - 6.6461, or approx. 68.54, or (to the nearest integer), approx 69 bpm
