+0  
 
0
309
1
avatar+588 

Employees were asked how many times per week they exercised. The frequency table shows the results of the survey.

 

Number of times exercised per week: 0  1  2  3  4  5  6  7  8

Frequency: 5  10  2  9  33  12  15  3  1

 

Find: (b) P(x < 4) (c) P(x = 6) (d) P(x (greater than or equal to sign) 5) 

adore.nuk  Feb 17, 2018
Sort: 

1+0 Answers

 #1
avatar+86649 
+2

 

(b)  P( x < 4)  =     ( 5 + 10 + 2 + 9 )  / ( 5 + 10 + 2 + 9 + 33 + 12 + 15 + 3 + 1 ) =  13/45

 

(c)  P(x  = 6)  =  15 / (5 + 10 + 2 + 9 + 33 + 12 + 15 + 3 + 1)  =  1/6

 

(d) P( x ≥ 5 ) =  (12+ 15 + 3 + 1) /  (5 + 10 + 2 + 9 + 33 + 12 + 15 + 3 + 1) =  7/30

 

 

cool cool cool

CPhill  Feb 17, 2018

2 Online Users

avatar

New Privacy Policy (May 2018)

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. Please click on "Accept cookies" if you agree to the setting of cookies. Cookies that do not require consent remain unaffected by this, see cookie policy and privacy policy.