Question

Your company sells exercise clothing and equipment on the Internet. To design the clothing, you collect data on the physical characteristics of your different types of customers. Here are the weights (in kilograms) for a sample of 24 male runners. Assume that these runners can be viewed as a random sample of your potential male customers. Suppose also that the standard deviation of the population is known to be sigma = 4.5 kg: What is sigma1, the standard deviation of ? 0.188 kg. 2.S78 kg. 0.919 kg. 4.S kg.

Answer 1

0.919 kg

Explanation:

Given that our company sells exercise clothing and equipment on the Internet. To design the clothing, you collect data on the physical characteristics of your different types of customers.

Sample size n = 24 male runners.

Std deviation of the population = 4.5 kg

We can assume that these runners can be viewed as a random sample of your potential male customers.

Then std error of the sample mean would be

`(\sigma)/(√(n) ) \\=(4.5)/(√(24) ) \\=0.919`

correct answer is 0.919 kg.