-1 +5 = 4 , (BC -+ is equal to -)
-(-6) = 6, (BC (-- is equal to +)
so (we take together the answers and put them in their place )
6-5 = 1
and BC -1+5 = 4
so 4+1= 5
hope this helped ✨
Answer:
whats that weird text is that a link?
= 0.3133
Given: μ = 560
σ = 90
To find: P (490 < X < 560)
Normal distributions are symmetric, unimodal, and asymptotic. A normal distribution is determined by two parameters the mean and the variance. A normal distribution with a mean of 0 and a standard deviation of 1 is called a standard normal distribution. It's always easy to solve questions in terms to standard normal
Hence, converting normal distribution to standard normal gives:
P(490 < X < 560) = ≤
= P(0 ≤ Z < 0.888)
= P (z<0.89) - P(z ≤ 0)
Using standard normal table,
= 0.8133 - 0.5
P(490 < X < 560) = 0.3133
To learn more about Normal Distribution, visit:
brainly.com/question/4079902
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