Whenever you study try not to study in your bed so that you don’t fall asleep too easily also set a timer for maybe 20 minutes and then take five minute breaks in between to get a snack or glance at your phone or just relax. Try not to overwork yourself.
In statistics, the 68–95–99.7 rule, also known as the three-sigma rule or empirical rule, states that nearly all values lie within three standard deviations of the mean in a normal distribution.
About 68.27% of the values lie within one standard deviation of the mean. Similarly, about 95.45% of the values lie within two standard deviations of the mean. Nearly all (99.73%) of the values lie within three standard deviations of the mean.
In mathematical notation, these facts can be expressed as follows, where x is an observation from a normally distributed random variable, μ is the mean of the distribution, and σ is its standard deviation:
P( μ – σ ≤ x ≤ μ + σ ) ≈ 0.6827
P( μ –2σ ≤ x ≤ μ + 2σ ) ≈ 0.9545
P( μ –3σ ≤ x ≤ μ + 3σ ) ≈ 0.9973
So here A = μ – σ = 78.7 – 3.5 = 75.2 (answer
Answer:
151 shirts
Step-by-step explanation:
2,578/17=151.647059
however, you can't have a portion of a shirt, so it is 151.
2000 is 1000 times larger than 2
Answer:
11
Step-by-step explanation:
edge 2020
<em>p.s. pls mark brainliest, and have a good day! :)</em>
