Let X be the number of gift cards out of 200 sold that will be used within a year from the purchase. Describe the distribution of X and its parameters: - • Use the random variable notation to symbolically express the probability that at least 160 gift cards out of 200 sold will be used within a year from the purchase: X Select an answer Select an answer • Let Y be a normal variable that will be used to approximate the probability in question. Find the parameters of Y (round the answers to 2 decimal places): Y Select an answer (μ . Use the correction for continuity: • Use the random variable notation to symbolically express the approximate probability that at least 160 gift cards out of 200 sold will be used within a year from the purchase: Select an answer PH Select an answer . Find the probability (round the answer to 4 decimal places):
Let X be the number of gift cards out of 200 sold that will be used within a year from the purchase. Describe the distribution of X and its parameters: - • Use the random variable notation to symbolically express the probability that at least 160 gift cards out of 200 sold will be used within a year from the purchase: X Select an answer Select an answer • Let Y be a normal variable that will be used to approximate the probability in question. Find the parameters of Y (round the answers to 2 decimal places): Y Select an answer (μ . Use the correction for continuity: • Use the random variable notation to symbolically express the approximate probability that at least 160 gift cards out of 200 sold will be used within a year from the purchase: Select an answer PH Select an answer . Find the probability (round the answer to 4 decimal places):
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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100%
#4 Find the probability
Transcribed Image Text:According to an annual survey by Paytronix, around 19% of gift cards are still unused after a full year from
purchase. Sounds like free money for businesses, right? It's all in the accounting when gift cards are sold,
they are counted as a liability until spent. A local restaurant chain sold 200 twenty-five dollar gift cards.
Based on the data they expect that 81% of the cards will be used within a year of the purchase. Use the
normal approximation along with the continuity correction factor to find the probability that at least 160
gift cards of 200 sold will be used within a year of purchase.
Let X be the number of gift cards out of 200 sold that will be used within a year from the purchase.
Describe the distribution of X and its parameters:
X Select an answer n
• Use the random variable notation to symbolically express the probability that at least 160 gift cards
out of 200 sold will be used within a year from the purchase:
. Let Y be a normal variable that will be used to approximate the probability in question. Find the
parameters of Y (round the answers to 2 decimal places):
Select an answer
Y Select an answer (=
. Use the correction for continuity:
Submit Question
• Use the random variable notation to symbolically express the approximate probability that at least
160 gift cards out of 200 sold will be used within a year from the purchase:
P
Select an answer
. Find the probability (round the answer to 4 decimal places):
Jump to Answer
Select an answer
σ
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