I really need help with this please I keep getting it wrong and I’m confused
1 answer:
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Answer:
True
Step-by-step explanation:
Given that:
M = 27, sample of n = 36 scores, µ = 30 and σ = 18.
The z score is used in statistics to determine by how many standard deviations the raw score is above or below the mean. If the z score is positive, the raw score is greater than the mean and if the z score is negative the raw score is less than the mean. The z score is given as:
Given that M = 27, this means that x = 27. Therefore:
This sample mean corresponds to a z-score of z = –1.00.
I assume you are asking how much time has passed
now, we can set up a proportion with this:
let x = time(in hours)
we cross multiply to get:
divide both sides by 50 to get:
hours
now, we can set up a proportion with this:
let x = time(in hours)
we cross multiply to get:
divide both sides by 50 to get: