Using the normal distribution, it is found that 44.43% of students are 21 or older and thus old enough to legally order alcohol at Griff's.
<h3>Normal Probability Distribution</h3>
The z-score of a measure X of a normally distributed variable with mean and standard deviation is given by:
- The z-score measures how many standard deviations the measure is above or below the mean.
- Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.
The mean and the standard deviation are given, respectively, by:
The proportion of students that are 21 or older is <u>one subtracted by the p-value of Z when X = 21</u>, hence:
Z = 0.14
Z = 0.14 has a p-value of 0.5557.
1 - 0.5557 = 0.4443 = 44.43% of students are 21 or older and thus old enough to legally order alcohol at Griff's.
More can be learned about the normal distribution at brainly.com/question/4079902
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No idea sorry <span>Cobalt-60 is used in the treatment of cancer. A sample contains 8 grams of co-60 wbere k=0.1308</span>
Xy = 450
y = x/2 => x=2y substituted inside first equation will get 2y*y=450 => y^2 = 225
y=15 because 15*15=225
x=2y so x=2*15 = 30
x=30
y=15
hope this will help you
Answer:
2
Step-by-step explanation:
If you are asking me to multiply 2*2 then subtract 2 you will get 2. Cause 2*2=4 then 4-2+2 so 2 is the answer if that is what you were asking.
On the firdt question i dont understand.
Answer:
Whole number
Step-by-step explanation:
Zero is; whole, an integer, a rational, and a real number. However 0 is not a counting/natural number.