Let x be a random variable representing the heights of adult American men. Since it is normally distributed and the population mean and standard deviation are known, we would apply the formula,
z = (x - mean)/Standard deviation
From the information given,
mean = 68
standard deviation = 2.5
The probability that the height of a selected adult is between 63 and 73 is expressed as

For x = 63,
z = (63 - 68)/2.5 = -2
Looking at the normal distribution table, the probability corresponding to the z score is 0.02275
For x = 73,
z = (73 - 68)/2.5 = 2
Looking at the normal distribution table, the probability corresponding to the z score is 0.97725
Therefore,

Thus, the percentage of men are between 63 and 73 is
0.9545 * 100 = 95.45%
Rounding up to the nearest percentage, the answer is 95%
Answer:
hutghighriughriughriughrihgrighrighirhgrhrgurhuihghruhgiurhirhiughriughriughurhurhugi
Step-by-step explanation:
<span>3(x + 5) = 3 · x + 3 · 5</span>
Answer:
65 degrees
Step-by-step explanation:
115-180
Answer:
Step-by-step explanation:
P=5/25=1/5=0.20