anonymous
  • anonymous
The time required to finish a test is normally distributed with a mean of 60 minutes and a standard deviation of 10 minutes. What is the z-Score for a student who finishes the test in 45 minutes?
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
amistre64
  • amistre64
theres a nice compact formula for this\[z=\frac{x-mean}{sd}\]
anonymous
  • anonymous
still confused.
amistre64
  • amistre64
well, they are asking for z, they give you x, mean, and sd .... the rest us just plugging in the specifics for x, mean, and sd

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
sd is standard deviation or student?
amistre64
  • amistre64
standard deviation
anonymous
  • anonymous
so it would be x-60/10?
amistre64
  • amistre64
(x-60)/10 yes, now fill in for x
anonymous
  • anonymous
45-60/10?
amistre64
  • amistre64
correct
anonymous
  • anonymous
ok so -15/10 = -1.5?
amistre64
  • amistre64
thatll do it
anonymous
  • anonymous
thanks so much!
amistre64
  • amistre64
youre welcome

Looking for something else?

Not the answer you are looking for? Search for more explanations.