Respuesta :
Answer:
a) 0.26
b) 0.264
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 250
Number of freshmen = 65
Number of sophomores = 66
Number of juniors = 61
Number of seniors = 58
(a) What proportion of undergraduate students are freshmen
[tex]p = \dfrac{\text{Number of freshmen}}{n} = \dfrac{65}{250}\\\\p = 0.26 = 26\%[/tex]
(b) What is the risk of being a sophomore
[tex]\text{Risk}= \dfrac{\text{Number of sophomores}}{n} = \dfrac{66}{250}\\\\\text{Risk} = 0.264[/tex]
a. The proportion of undergraduate students are freshmen is 0.26.
b. The risk of being a sophomore is 0.264.
Calculation of the proportion and risk:
Since A random sample of 250 undergraduate students from a large university was found to contain 65 freshmen, 66 sophomores, 61 juniors, and 58 seniors.
a. here the proportion should be
[tex]= 65\div 250[/tex]
= 0.26
b. The risk should be
[tex]= 66\div 250[/tex]
= 0.264
Learn more about sample here: https://brainly.com/question/24710931
