Question

nicca surveyed the students at her school to find out which cellphone company they use. her results are listed in the table.

	freshman	sophomore	junior	senior	total
company b	10	15	43	42	110
company c	40	36	34	30	140
total	77	85	101	90	353

what is the probability that a randomly chosen student is a junior who uses company b?
options:
a. $\frac{43}{353}$
b. $\frac{101}{353}$
c. $\frac{110}{353}$
d. $\frac{43}{101}$
e. $\frac{43}{110}$

Explanation:

Step1: Identify favorable and total outcomes

Favorable (junior, Company B): 43. Total students: 353.

Step2: Calculate probability

Probability = $\frac{\text{favorable}}{\text{total}} = \frac{43}{353}$.

Answer:

A. $\frac{43}{353}$