Question

1. In a study of brand recognition, 95% of consumers recognized Coke. The Company randomly selects 4 consumers for a taste test. Let X be the number of consumers who recognize Coke. a) Write out the PMF table for this. b) Find the probability that among the 4 consumers, 2 or more will recognize Coke. c) Find the expected number of consumers who will recognize Coke. d) Find the variance for the number of consumers who will recognize Coke.

          1. In a study of brand recognition, 95% of consumers recognized Coke. The Company randomly selects 4 consumers for a taste test. Let X be the number of consumers who recognize Coke.
a) Write out the PMF table for this.
b) Find the probability that among the 4 consumers, 2 or more will recognize Coke.
c) Find the expected number of consumers who will recognize Coke.
d) Find the variance for the number of consumers who will recognize Coke.

Added by Tyler G.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Varsha Aggarwal

04/05/2022

Step 1

X | P(X) 0 | (0.05)^4 1 | 4*(0.95)*(0.05)^3 2 | 6*(0.95)^2*(0.05)^2 3 | 4*(0.95)^3*(0.05) 4 | (0.95)^4 Show more…

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In a study of brand recognition, 95% of consumers recognized Coke. The Company randomly selects 4 consumers for a taste test. Let x be the number of consumers who recognize Coke. a) Write out the PMF table for this. b) Find the probability that among the 4 consumers, 2 or more will recognize Coke. c) Find the expected number of consumers who will recognize Coke. d) Find the variance for the number of consumers who will recognize Coke. 1. In a study of brand recognition, 95% of consumers recognized Coke. The Company randomly selects 4 consumers for a taste test. Let X be the number of consumers who recognize Coke. a) Write out the PMF table for this b) Find the probability that among the 4 consumers, 2 or more will recognize Coke. c) Find the expected number of consumers who will recognize Coke d) Find the variance for the number of consumers who will recognize Coke