+0  
 
0
422
3
avatar

The ages of members of a bowling league are normally distributed with a mean of 43 years and a standard deviation of 4 years.

There are 200 members in the league.

About how many members are expected to be between 35 years old and 51 years old?

136

160

183

190

 Apr 22, 2021
 #1
avatar+35066 
0

35  is  2 standard deviations BELOW the mean of 43

51  is  2 standard deviations ABOVE the mean of 43

 

find z - score for + 2 S.D.     then subtract the z-score for  - 2 S.D.   

 

   This is the percentage ( in decimal form)    of 200 members between the ages of 35 and 51        Can you finish?

 Apr 22, 2021
 #2
avatar
0

Is it .45?

Guest Apr 22, 2021
 #3
avatar
0

no what's the answer plz 

Guest Apr 30, 2021

12 Online Users