zyrihanna
Answered

Find the best answers to your questions at Westonci.ca, where experts and enthusiasts provide accurate, reliable information. Join our Q&A platform to connect with experts dedicated to providing precise answers to your questions in different areas. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

If the formula [tex]\(\bar{x}=\frac{1}{n} \sum_{i=1}^n x_i\)[/tex] is used to find the mean of the following sample, what is the value of [tex]\(n\)[/tex]?

Sample: 2, 63, 88, 10, 72, 99, 38

A. 6
B. 5
C. 7
D. 8

Sagot :

GinnyAnswer
To find the mean [tex]\(\bar{x}\)[/tex] of a sample using the formula [tex]\(\bar{x}=\frac{1}{n} \sum_{i=1}^n x_i\)[/tex], we need to determine the number of elements in the sample, which is represented by [tex]\(n\)[/tex].

Let’s identify each step required to find the sample size [tex]\(n\)[/tex]:

1. List the sample values: [tex]\(2, 63, 88, 10, 72, 99, 38\)[/tex].
2. Count the number of values in the sample.

[tex]\[ \begin{array}{c} 2, \ 63, \ 88, \ 10, \ 72, \ 99, \ 38 \end{array} \][/tex]

There are 7 values in the sample.

Thus, the value of [tex]\(n\)[/tex] is:

[tex]\[ n = 7 \][/tex]

Therefore, the correct answer is:

[tex]\[ \boxed{7} \][/tex]
Thanks for using our service. We aim to provide the most accurate answers for all your queries. Visit us again for more insights. Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. Thank you for using Westonci.ca. Come back for more in-depth answers to all your queries.