Answer:
This is a reasonable decision because the sample size has no effect on the 90% confidence interval
Step-by-step explanation:
90% confidence interval
larger sample size = 20
condition : sample mean ( x-bar ) is the same for both samples
<em>This is a reasonable decision because the sample size has no effect on the 90% confidence interva</em>l
<u>from condition 1 :</u>
Amount of drink dispensed is normally distributed with known standard deviation , given a random sample of n drinks and the sample mean at a confidence interval of 90%
<u>for condition 2 :</u>
sample size = 20
mean = 2.25 ( assumed value )
std = 0.15 ( assumed value )
Z = 1.645 ( Z-value )
determine the 90% confidence interval
= mean ± z 
= 2.25 ± 1.645 
= 2.25 ± 0.0335 = ( 2.2835 , 2.2165 )
Alright, so she drives 64.5*5 (for 5 days)=322.5 miles each week. She then uses 322.5miles/1 * 1gallon/21.5 miles (we have 1 gallon/21.5 miles because 1 gallon=21.5 miles and we have the gallon at the top to cross the miles out)=15 gallons. The cost per gallon is 2.85 (we add 2.85 for each gallon), and we have 15 gallons, so 2.85dollars*15l=42.75 dollars is our answer
Answer:
x=14
Step-by-step explanation:
becuase you have to add -9 to 5 but you to postibe 9 so its x equals 14
Answer:
True
True
True.
All the statements are true.
Step-by-step explanation:
When the data values are increased by 10, the value of the mean, median and mode also increases by 10.
Kindly check the attached file for the workings.
Answer:
X Y
1 2
2 5
3 10
2 5
Step-by-step explanation:
We can observe that:
and 
Therefore the function represented by the table is:
When x=3, we obtain:
Therefore the complete table is
X Y
1 2
2 5
3 10
2 5
