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
anzhelika [568]
3 years ago
12

the class average on a math test was 84.5 and the standard deviation was 4.4. Find the z-score for a test score of 94

Mathematics
1 answer:
Nuetrik [128]3 years ago
8 0
The z-score will be given by:
z=(x-μ)/σ
given that:
x=94
μ=mean=84.5
σ=standard deviation=4.4
thus
z=(94-84.5)/4.4
z=2.1591
You might be interested in
a five inch bamboo shoot doubles in height every three days. If the equation y=ab to the x power, where x represents the number
PtichkaEL [24]
This question was once asked before so I will put it here.

The correct answer for the question that is being presented above is this one: "x = 2; a = 5; b = 3" A 5 inch tall bamboo shoot doubles in height every 3 days. If the equation y=ab^x, where x is the number of doubling periods, represents the height of the bamboo shoot.

5 0
4 years ago
The manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is approximately normal wit
lyudmila [28]

Answer:

The probability the average mpg is less than 28 mpg is 0.8413.

Step-by-step explanation:

Given : The manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is approximately normal with

Mean \mu=26 mpg and standard deviation \sigma=12 mpg.

Number of sample n=36

To find : What is the probability the average mpg is less than 28 mpg?

Solution :

Applying z-score formula,

z=\dfrac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

The portability is given by, P(X

=P(\dfrac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

=P(\dfrac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

=P(z

=P(z

Using z-table,

=0.8413

Therefore, the probability the average mpg is less than 28 mpg is 0.8413.

6 0
3 years ago
Can someone help me with the 29 please. I need help right now
Romashka-Z-Leto [24]
1/4 of the school is boys
1/2 of 1/4 is 1/8
2/3 of 3/4 is 5/12
1/4 of boys and 5/12 of girls are there
330 people are at the event
If 3/4 of the school is there, then there are 440 people in school
3 0
3 years ago
Write a word problem that can be solved by using 2x5÷5.
Mama L [17]

Answer:

2 apples fall from a tree 5 times a day after they are collected they need to be split between 5 friends, how many apples does each friend get?

Step-by-step explanation:

2 x 5 ÷5= 2

so each friend gets 2 apples hope this helps :)

3 0
4 years ago
Alice Hill is paid 580 per hour Last week she works 62 hours calculate Alice pay she is entitle to time and a 1/2​
Korolek [52]

Answer:

580 x 62 = 35,960 + 17,980 = 53,940

Step-by-step explanation:

for alice to be payed time in a half first you would multiply the amount of hours worked (62) by her pay rate (580) then you would add it to half the amount of hours she worked(31)  by the rate of her pay (580). Her pay would be $53,940 for last week.

5 0
3 years ago
Other questions:
  • Write the number 34 in expanded form
    13·2 answers
  • The formula for converting a Celsius temperature to a Fahrenheit temperature is:
    14·1 answer
  • SOLVE PLEASE. Would we use tan70=x/5.0?
    10·1 answer
  • Please answer I need it
    12·1 answer
  • The sum of the measures of all the exterior angles of a polygon is ____ equal to 180
    14·2 answers
  • What is the simplified value of the expression below?
    11·2 answers
  • Find the value of x. Write your answer as a decimal.
    13·1 answer
  • Part A: If (2^6)x = 1, what is the value of x? Explain your answer. (5 points)
    11·1 answer
  • Julio is drawing tiles from a bag of tiles like the one shown below.
    7·1 answer
  • 2m4+5mn²+18x³y⁴a⁵=
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!