Answered

IDNLearn.com: Your trusted platform for finding reliable answers. Our platform is designed to provide trustworthy and thorough answers to any questions you may have.

1. The heights (in cm) of students in a class are as follows:

[tex]\[
155, 161, 145, 149, 150, 145, 152, 145, 140
\][/tex]

Sagot :

GinnyAnsweridn
Let's solve this problem step by step, calculating the mean height and determining the number of students in the class.

### Step 1: Listing the Heights
The given heights (in cm) of students are:
[tex]\[ 155, 161, 145, 149, 150, 145, 152, 145, 140 \][/tex]

### Step 2: Counting the Number of Students
To determine the number of students, we count the heights listed:
[tex]\[ \text{Total number of students} = 9 \][/tex]

### Step 3: Calculating the Mean Height
The mean (average) height is calculated by summing all the heights and then dividing by the number of students.

#### Sum of Heights:
[tex]\[ 155 + 161 + 145 + 149 + 150 + 145 + 152 + 145 + 140 = 1242 \][/tex]

#### Calculating the Mean:
[tex]\[ \text{Mean height} = \frac{\text{Sum of heights}}{\text{Number of students}} \][/tex]
[tex]\[ \text{Mean height} = \frac{1242}{9} \approx 149.11 \, \text{cm} \][/tex]

### Summary of Results:
- Number of students: 9
- Mean height: 149.11 cm

These values indicate that there are 9 students in the class, and the mean height of the students is approximately 149.11 cm.
We appreciate your contributions to this forum. Don't forget to check back for the latest answers. Keep asking, answering, and sharing useful information. Your questions find clarity at IDNLearn.com. Thanks for stopping by, and come back for more dependable solutions.