Answer: 100+1.28(1/2)=100.64
Step-by-step explanation:
A random sample of size 16 is to be taken from a normal population having mean 100 and variance 4. ... The 90th percentile of the normal curve, according to the table I was provided, was equal to 1.28 standard units above the mean.
Answer:
I wanna say 35 \cm
Step-by-step explanation:
Assuming that

is the amount of hours spent doing homework:
Plug in

for


,

That means that since a

value is the test score (because that's what the y-axis is labeled), your predicted test score is a
64.
Answer:140
Step-by-step explanation:
24/20=168/N
Cross product
24×n=168×20
24n=3360
n=3360/24
n=140
It's the zero in the tenth place