Answer:
Step-by-step explanation:
Let X be the SRS scores of students.
Given that X is normal with standard deviation about 6.5.
Mean difference = 
is desired
i.e. Z score should be 
Std error = std deviation of sample = 0.447
b) 
So std error must be 0.997 and sample size must be atleast 193 to get the difference of x bar and mu to lie within 1.3 points in either direction
Answer:
B
Step-by-step explanation:
because -16+(-9) is essentially the same thing because you're adding the -9 to the -16
Total time taken to attach the wheels and hood to a car = 8.216 + 3.652 = 11.868 seconds
Total time taken to attach good and wheels to 425 cars = 11.868 x 425 = 4925.22 seconds
Ans. 4925.22 seconds
Answer:
Step-by-step explanation:
Putting value of eq. 1 in the following:
Answer:
5.5%
Step-by-step explanation:
Given data
Simple interest = $137.50
Principal= $500
time = 5 years
We want to find the rate R
Simple interest= PRT/100
137.50 = 500*R*5/100
137.50=2500R/100
cross multiply
137.5*100= 2500R
13750= 2500R
divide both sides by 2500
R= 13750/2500
R=5.5%
Hence the rate is 5.5%
