1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Helen [10]
3 years ago
13

The mean for a data set is 60. The Z-score for

Mathematics
1 answer:
Vladimir [108]3 years ago
7 0

Answer:

D. a = 60 and b = 58.8

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Z-score for data point a is 0.

This means that a is the mean, that is, a = 60.

The z-score for data point b is -0.4.

This means that b must be a value below the mean, that is, a value below 60.

The option that satisfies a = 60 and b < 60 is option D, which is the answer.

You might be interested in
-3b+7=13 solve for b
sleet_krkn [62]

Answer:

b =-2

Step-by-step explanation:

-3b+7=13

Subtract 7 from each side

-3b+7-7=13-7

-3b = 6

Divide each side by -3

-3b/-3 = 6/-3

b = -2

8 0
3 years ago
Read 2 more answers
What’s is the answer
Natasha_Volkova [10]

Answer:

In simplest form, it should be:

3:2

6 / 2 = 3

4 / 2 = 2

Hope this helps!


8 0
3 years ago
It takes 16 minutes for 9 people to paint 8 walls . How many minutes does it take for 4 people to paint 6 walls?
Soloha48 [4]

Answer:

27 minutes to complete the painting of 4 walls

Step-by-step explanation:

since 16m with 9p --> 8 walls

x minutes with 4p --> 6 walls?

let x= minutes

6 walls painted=(8/144 walls painted per minute)x

simplify

x= 6 divided by (8/144)

x=108 minutes (to complete 6 walls)

108/4=

27 minutes to complete the painting of 4 walls

4 0
3 years ago
Read 2 more answers
Where should you endorse a check
Leokris [45]
You would have to mail it off 
7 0
3 years ago
Read 2 more answers
Please help me ill give you the crown thing if its right no joke
ratelena [41]
22 need more
150-56=94
20*3 = 60
94-60 = 34
34-12= 22
5 0
3 years ago
Other questions:
  • Write an expression to represent the submarine’s elevation after its final dive. Then simplify the expression to find its elevat
    15·1 answer
  • Please answer this correctly
    5·1 answer
  • Which of these best defines the term “narrator”?
    8·2 answers
  • 50 POINTS. Part II: Using the FOIL method, multiply the terms in the binomials below. Show your work in the blanks provided. The
    11·1 answer
  • Write the equation of the line that passes through the points (7, -3) and (7, 0).
    13·2 answers
  • The measure of one side of a square is (s - 3) inches long. Which pair of expressions both represent the perimeter of this squar
    9·1 answer
  • I ain't never seen too pretty best friends it's always one of them got to be ugly heeeeeellllllpppp!!!!!
    10·2 answers
  • Skate World offers birthday parties for a fee of $130 plus $3 per person. If you can spend no more than $190 on your party, what
    8·1 answer
  • In a board game, each player must roll a number cube and spin a spinner. The number cube is labeled with the numbers 1 through 6
    15·1 answer
  • Let f(x) = x2 − 16. Find f−1(x)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!