Question

Python eggs How is the hatching of water python eggs influenced by the temperature of the snake’s nest? Researchers randomly assigned newly laid eggs to one of three water temperatures: hot, neutral, or cold. Hot duplicates the extra warmth provided by the mother python, and cold duplicates the absence of the mother. The two-way table summarizes the data on whether or not the eggs hatched.

(a) What percent of eggs were randomly assigned to hot water?

(b) What proportion of eggs in the study hatched?

(c) What percent of eggs in the study were randomly assigned to cold or neutral water and hatched?

Short answer

Part (a) 55.61%

Part (b)$\frac{129}{187}\approx 0.6898$

Part (c) 28.88%

Step-by-step solution

Part (a) Step 1. Given information.

The given table is:

Part (a) step 2. Find the percent of eggs randomly assigned to hot water 

The total number of eggs assigned to hot water is: 104

The total number of eggs that are included in this study is: 187

The required percentage is:

$\frac{104}{187}\approx 0.5561\mathrm{or}55.61\%$

Part (b) Step 1. Find the proportion of eggs hatched in the study.

The total number of eggs that are hatched in this study is: 129

The required percentage is:

$\frac{129}{187}\approx 0.6898$

Part (c) Step 1. Find the percent of eggs randomly assigned to cold or neutral water and hatched.

The total number of eggs that are assigned to cold or neutral water and also hatched are:

$16+38=54$

The required percentage is:

$\frac{54}{187}\approx 0.2888\mathrm{or}28.88\%$