The z-score for 45cm is found as follows:
Reference to a normal distribution table, gives the cumulative probability as 0.0099.
Therefore about 1% of newborn girls will be 45cm or shorter.
For this case, the first thing we must do is define variables.
We have then:
x: number of baseballs
y: total amount
We know that each baseball costs $ m.
We also know that Robert has spent $ b.
Therefore, the expression that models the problem is given by:
Answer:
The following expression represents the total amount Robert will spend after buying x baseballs:
Answer:
The correct answer is "0.3410, 0.4990".
Step-by-step explanation:
Given values are:
At 95% confidence interval,
C = 95%
z = 1.96
As we know,
⇒
By substituting the values, we get
hence,
The confidence interval will be:
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