Answer:
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Step-by-step explanation:
95% of a normal distribution lies within ±1.96 standard deviations of the mean. That is, ±3 years represents ±1.96 standard deviations, so ...
.. the standard deviation is 3/1.96 = 1.53 years.
Step-by-step explanation:
The ratio's can be expressed as fractions and you may compare those.
In order to compare fractions you need to bring them into equal denominator.
8 and 9 have LCM of 8*9 = 72 since they have no common factors.
<u>The equivalent fractions with common denominator are:</u>
- 5/8 = 9*5/(9*8) = 45/72
- 7/9 = 8*7/(8*9) = 56/72
<u>Now we can compare the fractions:</u>
- 45/72 < 56/72, since 45 < 56
Answer:
6/-5
Step-by-step explanation:
label the points, x1 y1, x2 y2, and subtract y2-y1, over x2-x1
7-1=6, -7-(-2)= -5
So, 6/-5, or, six over negative five
The question can be solved as follows:
Hence the value of the given expression in scientific notation is expressed as:
