Answer: d) -5, -40, -640
<u>Step-by-step explanation:</u>
Answer:
73.1 inches
Step-by-step explanation:
We solve for this using z score formula.
z-score is z = (x-μ)/σ,
where x is the raw score,
μ is the population mean
σ is the population standard deviation.
x = unknown = randomly selected male's height
μ = 70.3 inches
σ = 4.1 inches
z = is not given but we are given its percentile which is 75
The z score for a 75th percentile = 0.674
Hence,
0.674 = x - 70.3/4.1
Cross Multiply
0.674 × 4.1 = x - 70.3
2.7634 = x - 70.3
x = 70.3 + 2.7634
x = 73.0634 inches
The height of the randomly selected male = 73.0634
Therefore, the height of the randomly selected male to the nearest tenth of an inch is 73.1 inches
To find a percentage increase of 15%, you can multiply the original value by 1.15.
To find a percentage increase of 20%, you can multiply the original value by 1.2.
117.7 * 1.15 = 135.355
So if she orders 15% extra tile, she will order around about 135.355 square feet.
117.2 * 1.2 = 141.24
And if she orders 20% extra tile, she will order around about 141.24 square feet.
Any number between those two values will be the amount of tile she might order.
The answer is 7/16 because if you turn the denominator into a bigger number so you can get the answer, it becomes 14/16 and half of that is 7/16.