Question
A livestock company reports that the mean weight of a group of young steers is 1164...
A livestock company reports that the mean weight of a group of young steers is 1164 pounds with a standard deviation of 90 pounds. Based on the model N(1164,90) for the weights of steers, what percent of steers weigh
a) over 1100 pounds? b) under 900 pounds? c) between 1150 and 1200 pounds?
Homework Answers
Answer #1
Mean, 
= 1164 pounds
SD, 
= 90 pounds
We know, Z = 
(a) Percentage of steers who weigh over 1100 pounds
= P(X > 1100)*100%
= P{Z > (1100 - 1164)/90}*100%
= P(Z > -0.711)*100%
= 76.14%
(b) Percentage of steers who weigh under 900 pounds
= P(X < 900)*100%
= P{Z < (900 - 1164)/90}*100%
= P(Z < -2.933)*100%
= 0.17%
(c) Percentage of steers who weigh between 1150 and 1200 pounds
= P(1150 < X < 1200)*100
= P{(1150 - 1164)/90 < Z < (1200 - 1164)/90}*100
= P(-0.156 < Z < 0.4)*100%
= 0.1744*100 = 17.44%
Not the answer you're looking for?
Similar Questions
A livestock company reports that the mean weight of a group of young steers is 1149...
A livestock company reports that the mean weight of a group of
young steers is 1149 pounds with a standard deviation of 89 pounds.
Based on the model N(1149,89) for the weights of steers, what
percent of steers weigh a) over 1150 pounds? b) under 1250
pounds? c) between 1100 and 1200 pounds?
A livestock company reports that the mean weight of a group of young steers is 1103...
A livestock company reports that the mean weight of a group of
young steers is 1103 pounds with a standard deviation of 80 pounds.
Based on the model N(1103,80) for the weights of steers, what
percent of steers weigh
a) over 1150 pounds?
b) under 1300 pounds?
c) between 1200 and 1250 pounds?
A livestock company reports that the mean weight of a group of young steers is 1102...
A livestock company reports that the mean weight of a group of
young steers is 1102 pounds with a standard deviation of 85 pounds.
Based on the model N(1102,85) for the weights of steers, what
percent of steers weigh a) over 1200 pounds? b) under 1150
pounds? c) between 1050 and 1300 pounds?
A livestock company reports that the mean weight of a group of young steers is 1,111...
A livestock company reports that the mean weight of a group of
young steers is 1,111 pounds with a standard deviation of 73
pounds. Based on the model N(1,111,73) for the weights of
steers, what percent of steers weigh
a) over 1150 pounds?
b) under 900 pounds?
c) between 1050 and 1250 pounds?
A livestock company reports that the mean weight of a group of young steers is 1168...
A livestock company reports that the mean weight of a group of
young steers is 1168 pounds with a standard deviation of 74 pounds.
Based on the model N(1168,74) for the weights of steers, what
percent of steers weigh
a) over 1200 pounds?
b) under 1100 pounds?
c) between 1000 and 1050 pounds?
A livestock company reports that the mean weight of a group of young steers is 1148...
A livestock company reports that the mean weight of a group of
young steers is 1148 pounds with a standard deviation of 64 pounds.
Based on the model N(1148,64) for the weights of steers, what
percent of steers weigh
a) over 1300 pounds?
b) under 1200 pounds?
c) between 1000 and 1250 pounds?
A livestock company reports that the mean weight of a group of young steers is 1151...
A livestock company reports that the mean weight of a group of
young steers is 1151 pounds with a standard deviation of 65 pounds.
Based on the model N(1151 ,65 ) for the weights of steers, what
percent of steers weigh a) over 1200 pounds? b) under 1000
pounds? c) between 1050 and 1300 pounds?
A livestock company reports that the mean weight of a group of young steers is 1161...
A livestock company reports that the mean weight of a group of
young steers is 1161 pounds with a standard deviation of 80 pounds.
Based on the model N(1161,80) for the weights of steers, what
percent of steers weigh
a) over 1250 pounds?
b) under 1050 pounds?
c) between 1200 and 1300 pounds?
A livestock company reports that the mean weight of a group of young steers is 1145...
A livestock company reports that the mean weight of a group of
young steers is 1145 pounds with a standard deviation of 84pounds.
Based on the model N(1145,84) for the weights of steers, what
percent of steers weigh
a) over 1050 pounds?
b) under 1000pounds?
c) between 1250 and 1300 pounds?
A livestock company reports that the mean weight of a group of young steers is 1138...
A livestock company reports that the mean weight of a group of
young steers is 1138 pounds with a standard deviation of 60 pounds.
Based on the model N(1138,60) for the weights of steers, what
percent of steers weigh a) over 1150 pounds? b) under 950
pounds? c) between 1050 and 1250pounds? a) nothing% of steers
have weights above 1150 pounds. (Round to one decimal place as
needed.) b) nothing% of steers have weights below 950 pounds.
(Round to one...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 9 minutes ago
asked 11 minutes ago
asked 32 minutes ago
asked 37 minutes ago
asked 47 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago