3 years ago

Stem-and-Leaf Plots

Mathematics

2 answers:

Alinara [238K]3 years ago

5 0

In total, there are 3 swimmers that are younger than 30.

lilavasa [31]3 years ago

4 0

We are looking for any swimmer's whose age begins with a 0, 1 or 2.

We look at the tree and count one swimmer (age 11) beginning with a 1 and two swimmers (age 23 and 29) beginning with a two.

In total, there are three swimmers younger than 30.

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tatyana61 [14]

Answer:

Following are the solution to the question:

Step-by-step explanation:

$p = 0.43\\\\n = 243\\\\\sigma =\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{0.43 (1 -0.43)}{243}}=0.0013$