Answer:
a) Between 74 and 90
b) 81.86% of the scores are between 78 and 90
Step-by-step explanation:
a) According to the Empirical Rule, in a normal distribution, 95% of the data are within 2 standard deviations of the mean. Therefore, the range that 95% of the scores fall in is between 82-4(2)=74 and 82+4(2)=90.
b) The percent of scores that are between 78 and 90 is: normalcdf(lower,upper,μ,σ) = normalcdf(78,90,82,4) = 0.8185946784 ≈ 0.8186, or about 81.86% of the scores.
YOU CAN WRITE AN EQUATION OF 7.5 Divide 2.5 = any letter
For this case we have that by definition, the slope of a line is given by:
Two points are needed through which the line passes:
Substituting:
Rounding:
Answer:
Answer:
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Step-by-step explanation:
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Answer:
there must me a second equation too. as an equation with two variables can not be solved by just one equation
