Answer:
The population mean is 5 volts
Step-by-step explanation:
Output voltage is assumed to be normally distributed, with standard deviation 0.25 Volts
s=0.25
n = 8
Sample mean =
Since n < 30 and population standard deviation is unknown
So, we will use t test
Formula :
t=-1.69
Refer the t table for p value
Degree of freedom = n-1 = 8-1 = 7
So,
P value >α
So, We are failed to reject null hypothesis
Hence The population mean is 5 volts
She has 1/4 yards of fabric because you do 7/8-5/8=2/8 and that simplified is 1/4.
Mrs.Kennedy can divide 315 by 10 and then when she gets her answer she can round up to get her answer.
Answer:45
Step-by-step explanation:
4+6=10
So it is 36/10
Simplify to 18/5
Or do decimal and make it 3.6