According to a recent study, the carapace length for adult males of a certain species of tarantula are normally distributed with a mean of μ = 17.44 mm and a standard deviation of a = 1.72 mm. Complete parts (a) through (d) below. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. SIID a. Find the percentage of the tarantulas that have a carapace length between 15 mm and 16 mm. The percentage of the tarantulas that have a carapace length between 15 and 16 is 12.27 %. (Type an integer or decimal rounded to two decimal places as needed.) b. Find the percentage of the tarantulas that have a carapace length exceeding 18 mm. torrect: 1 The percentage of the tarantulas that have a carapace length exceeding 18 is %. (Type an integer or decimal rounded to two decimal places as needed.)

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### Understanding Normal Distribution: Tarantula Carapace Length Study

According to a recent study, the carapace length for adult males of a certain species of tarantula is normally distributed with a mean (\(\mu\)) of 17.44 mm and a standard deviation (\(\sigma\)) of 1.72 mm. The tasks below will help you understand how to interpret and analyze data following a normal distribution.

**Click the following links to view the standard normal distribution tables, which are necessary for solving the problems below:**

- [Page 1 of the Standard Normal Distribution Table](#)
- [Page 2 of the Standard Normal Distribution Table](#)

#### Problem Analysis:

1. **Find the percentage of the tarantulas that have a carapace length between 15 mm and 16 mm.**

   _Solution:_
   The percentage of the tarantulas that have a carapace length between 15 mm and 16 mm is **12.27%**.

2. **Find the percentage of the tarantulas that have a carapace length exceeding 18 mm.**

   _Solution:_
   The percentage of the tarantulas that have a carapace length exceeding 18 mm is **19.91%**.

**Instructions for Calculation:**

- Use the mean (\(\mu\)) of 17.44 mm and the standard deviation (\(\sigma\)) of 1.72 mm.
- Convert the given carapace lengths to Z-scores using the formula:
  
  \[
  Z = \frac{(X - \mu)}{\sigma}
  \]
  
  where \(X\) is the carapace length you are analyzing.
  
- Refer to the standard normal distribution tables to find the corresponding percentages for the Z-scores obtained.

**Note:** Always express your final answers as percentages and, if needed, round to two decimal places.

Understanding these calculations will help you analyze normally distributed data in various biological studies, enhancing your ability to draw meaningful conclusions from quantitative data.
Transcribed Image Text:### Understanding Normal Distribution: Tarantula Carapace Length Study According to a recent study, the carapace length for adult males of a certain species of tarantula is normally distributed with a mean (\(\mu\)) of 17.44 mm and a standard deviation (\(\sigma\)) of 1.72 mm. The tasks below will help you understand how to interpret and analyze data following a normal distribution. **Click the following links to view the standard normal distribution tables, which are necessary for solving the problems below:** - [Page 1 of the Standard Normal Distribution Table](#) - [Page 2 of the Standard Normal Distribution Table](#) #### Problem Analysis: 1. **Find the percentage of the tarantulas that have a carapace length between 15 mm and 16 mm.** _Solution:_ The percentage of the tarantulas that have a carapace length between 15 mm and 16 mm is **12.27%**. 2. **Find the percentage of the tarantulas that have a carapace length exceeding 18 mm.** _Solution:_ The percentage of the tarantulas that have a carapace length exceeding 18 mm is **19.91%**. **Instructions for Calculation:** - Use the mean (\(\mu\)) of 17.44 mm and the standard deviation (\(\sigma\)) of 1.72 mm. - Convert the given carapace lengths to Z-scores using the formula: \[ Z = \frac{(X - \mu)}{\sigma} \] where \(X\) is the carapace length you are analyzing. - Refer to the standard normal distribution tables to find the corresponding percentages for the Z-scores obtained. **Note:** Always express your final answers as percentages and, if needed, round to two decimal places. Understanding these calculations will help you analyze normally distributed data in various biological studies, enhancing your ability to draw meaningful conclusions from quantitative data.
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