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In a batch of 23 pedometers, 3 are believed to be defective. A quality-control engineer randomly selects 7 units to test. Let random variable X- the number of defective units that are among the 7 units tested. a. Find the probability mass function f(x)=P(X=x), and sketch its histogram b. Find P(X-1). What does this number represent? 6. Find P(X2 1). What does this number represent?

In a batch of 23 pedometers, 3 are believed to be defective. A quality-control engineer randomly selects 7 units to test. Let random variable X- the number of defective units that are among the 7 units tested. a. Find the probability mass function f(x)=P(X=x), and sketch its histogram b. Find P(X-1). What does this number represent? 6. Find P(X2 1). What does this number represent?

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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8. Find the probably mass function f(x)=P(X=x), and sketch its histogram. b. Find P(X=1). What does this number represent? c. Find P(X21). What does this number represent? Using the hypergeometric probability distribution model, set up an expression that can be used to find a single ordered pair in the probability mass function f(x)=P(X=x). f(x)=P(X x) = 1.8 a. Find the probability mass function f(x)=P(X=x). OA A) (Type an ordered pair. Use a comma to separate answers as needed. Round to five decimal places as needed.) Let x the number of defective pedometers among the 7 units tested, and let y=f(x). Choose the correct histogram below. 0.7- 0.0 0.5 04 0.3 02- 0123 Q (Simplify your answers.) Q S OB. Av 0.7 0.6 0.5 04 03 02- 01 m 0- CITR 0123 oda OC. 0.74 0.64 0.5 04 03- 02 0.13 0 0123 o du OD. 07- 0.0 0.54 04 03 02- 0129 SON
Transcribed Image Text:8. Find the probably mass function f(x)=P(X=x), and sketch its histogram. b. Find P(X=1). What does this number represent? c. Find P(X21). What does this number represent? Using the hypergeometric probability distribution model, set up an expression that can be used to find a single ordered pair in the probability mass function f(x)=P(X=x). f(x)=P(X x) = 1.8 a. Find the probability mass function f(x)=P(X=x). OA A) (Type an ordered pair. Use a comma to separate answers as needed. Round to five decimal places as needed.) Let x the number of defective pedometers among the 7 units tested, and let y=f(x). Choose the correct histogram below. 0.7- 0.0 0.5 04 0.3 02- 0123 Q (Simplify your answers.) Q S OB. Av 0.7 0.6 0.5 04 03 02- 01 m 0- CITR 0123 oda OC. 0.74 0.64 0.5 04 03- 02 0.13 0 0123 o du OD. 07- 0.0 0.54 04 03 02- 0129 SON
In a batch of 23 pedometers, 3 are believed to be defective. A quality-control engineer randomly selects 7 units to test. Let random variable X the number of defective units that are among the 7 units tested. a. Find the probability mass function f(x)=P(X=x), and sketch its histogram b. Find P(X=1). What does this number represent? c. Find P(X2 1). What does this number represent? Using the hypergeometric probability distribution model, set up an expression that can be used to find a single ordered pair in the probability mass function (x)-P(X) (912) 10x)-POX-x)+ 00 28287261 (Simply your answers) Find the probabiety mass function (x) POC) -O (Type an ordered pair Use a comma to separate answers as needed Round to five deamal places a needed) Let the number of defective pedometers among 7 uns tested, and lyfo Choose the comect stagram OA Oc Cocon PARADA LEADERS
Transcribed Image Text:In a batch of 23 pedometers, 3 are believed to be defective. A quality-control engineer randomly selects 7 units to test. Let random variable X the number of defective units that are among the 7 units tested. a. Find the probability mass function f(x)=P(X=x), and sketch its histogram b. Find P(X=1). What does this number represent? c. Find P(X2 1). What does this number represent? Using the hypergeometric probability distribution model, set up an expression that can be used to find a single ordered pair in the probability mass function (x)-P(X) (912) 10x)-POX-x)+ 00 28287261 (Simply your answers) Find the probabiety mass function (x) POC) -O (Type an ordered pair Use a comma to separate answers as needed Round to five deamal places a needed) Let the number of defective pedometers among 7 uns tested, and lyfo Choose the comect stagram OA Oc Cocon PARADA LEADERS
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