2 years ago

A test had a mean of 72% and a standard deviation of 8 what is the z-score for a test score of 85?

Mathematics

1 answer:

PolarNik [594]2 years ago

3 0

Answer:

The answer to this question is within 2 stabdard deviations

Step-by-step explanation:

to get the score of 85 you got to add the deviation value to the mean whuch creates the deviation. do that multiple times and you get a multiple deviation

72+8=80+8 is 88

88 is greater than 85 so a test score of 85 is within 2 standard deviations of the mean

You might be interested in

Given: BC bisects DBE. Prove: ABD is congruent to ABE

Arada [10]

Answer:

See below

Step-by-step explanation:

BC bisects <DBE and if AC is a straight line then you have that:

<ABD + <DBC = 180 (straight angle because of line AC)

<ABE + <CBE = 180 ( straight angle because of line AC)

Because BC bisects <DBE => < DBC = <CBE

So <ABD and <ABE must be the same to both sum 180 when added < DBC

7 0

3 years ago

Height of student folliwing normal distribution with a mean 170 cm and standard deviation of 5 cm. What is range of values conta

Gekata [30.6K]

I say 34 do not know if it is right

6 0

2 years ago

W=1000M-200 rearrange your make M the subject

Anton [14]

Answer:

M = $\frac{w+200}{1000}$

Step-by-step explanation:

Given

w = 1000M - 200 ( isolate 1000M by adding 200 to both sides )

w + 200 = 1000M ( divide both sides by 1000 )

$\frac{w+200}{1000}$ = M

7 0

2 years ago

Natalie works in a department store selling clothing, She makes a guaranteed salary

marusya05 [52]

Answer:

215

Step-by-step explanation:

subtract 30 from 225

5 0

2 years ago

Which type of function is shown in the table below?

lora16 [44]

Answer: Exponential table

3 0

2 years ago