Theorem: If a random variable is normally distributed with a mean of µ and a standard deviation of σ, then the sample mean with a sample size of n would be normally distributed too with the same mean and a standard deviation of
.
In this case, µ = 1200, σ = 60, sample size n = 36.
So the sample mean has a mean of 1200 and a standard deviation of
.
Then the z-score that corresponds to 1224 is
Answer:
bro it had been decreased
<h3>so total had been decreased is</h3><h3> (4,000,000-2,900,000)=1,100,000</h3>
Answer: 350
Explanation:
a = adult tickets
s = student tickets
║ a + s = 754
║s = a + 54
Plug s = a + 54 into a + s = 754
a + (a + 54) = 754
a + a + 54 = 754
2a + 54 = 754
2a = 754 - 54
2a = 700
a = 350
If:
Soon:
Therefore: (<span>It's not a boy)
</span>Students = 20
Boys = 9
girls = ?
Answer: (Describe the likelihood of not choosing a boy)
Multiply the fraction by 100%.