clayziu568 clayziu568

11-06-2020
Mathematics

contestada

The mean grade on the last
Geometry test was 78. If Kate
scored a 90 and her z-score
was 2.5, find the standard
deviation for the test.

Respuesta :

MathPhys MathPhys

11-06-2020

Answer:

4.8

Step-by-step explanation:

z = (x − μ) / σ

2.5 = (90 − 78) / σ

σ = 4.8

Answer Link

Otras preguntas

solve the equation 8xsquared+2x-3=0 hence solve the equation 8cos^2y+2cosy_3=0 for the range 0degrees <y <180

some help? which one is ABCD???? Please!

help. it's my last question. I'm stuck and I can't seem to figure it out

HELP MEWhy did Native Americans help the British by "scalping" the heads of American soldiers? A:Native Americans wanted to move back to Great Britain. B:Nativ

how the ww2 begin in Australia

what is quotient 2/3 ÷ 4/5 ?

I need the answer plz fast hurry

1. You have gone for a shopping spree, in the sales. There is a 50% sale. You want to buy a shirt, the full price of this shirt is £13.50. How much will you pay

underline the adjectives in each sentence and circle the noun it modifiesthe Taj Mahal in India is an Exquisite building

Given 3k+5=17 Prove k=4 Statements reasons 1. 3k+5=17 1. 2. 3k=12. 2. 3. K=4. 3. Answer this problem. List the reasons