On a popular app, users rate hair salons as 1, 2, 3, 4, or 5 stars. Suppose a rating is randomly selected from all the ratings on the app. Let X be the numberof stars of the selected rating. Here is the probability distribution of X.12345Value x of XP(X=x) 0.26 0.18 0.09 0.22 0.25For parts (a) and (b) below, find the probability that the randomly selected hair salon rating has the described number of stars.(a) Fewer than 3:(b) More than 3:0SWE

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On a popular app, users rate hair salons as 1, 2, 3, 4, or 5 stars. Suppose a rating is randomly selected from all the ratings on the app. Let X be the number of stars of the selected rating. Here is the probability distribution of X. Value x of X 1 2 3 4 0.22 0.26 0.18 0.09 5 0.25 P(X=x) For parts (a) and (b) below, find the probability that the randomly selected hair salon rating has the described number of stars. (a) Fewer than 3:0 (b) More than 3: X S

On a popular app, users rate hair salons as 1, 2, 3, 4, or 5 stars. Suppose a rating is randomly selected from all the ratings on the app. Let X be the number of stars of the selected rating. Here is the probability distribution of X. Value x of X 1 2 3 4 0.22 0.26 0.18 0.09 5 0.25 P(X=x) For parts (a) and (b) below, find the probability that the randomly selected hair salon rating has the described number of stars. (a) Fewer than 3:0 (b) More than 3: X S

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter12: Probability

Section12.4: Discrete Random Variables; Applications To Decision Making

Problem 1E

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