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
malfutka [58]
2 years ago
14

the mean of normally distributed test scores is 80 and the standard division is 5. If there are 186 test scores in the data samp

le, how many of them were in the 75 to 80 range?

Mathematics
1 answer:
Marizza181 [45]2 years ago
5 0

Answer:

63

Step-by-step explanation:

score 75 is one standard dev below the mean ====>to the mean  encompasses approx 34% of scores

.34 * 186 = 63

You might be interested in
A store manager predicts that 115 hats will be sold if each hat costs $18. The manager predicts that 3 less hats will be sold fo
8_murik_8 [283]

Answer:

The prices at which manager predict that at least 55 hats will be sold would be would be of $38

Step-by-step explanation:

According to the given data we the following:

Number of hats sold at $18=115

The manager predicts at 3 less will sold for every rise in 1 $ for at least 55 hats.

Therefore, reduction in number=115 hats-55 hats=60

So, increase in price=reduction in number/number of hats manager predicts that  will be sold for every $1 increase in price

increase in price=60/3=$20

Therefore, prices at which manager predict that at least 55 hats will be sold would be=$18+$20=$38

The prices at which manager predict that at least 55 hats will be sold would be would be of $38

8 0
3 years ago
True or False
Nady [450]

Answer:

an expression, the exponent indicates how

any times the base is used as a factor. false.

Step-by-step explanation:

beacuse i guess iam smart

3 0
3 years ago
Two of the lights at the local stadium are flickering. They both just flickered at the same time. One of the lights flickers eve
irinina [24]
1,665
because 777+888 = 1,665

7 0
3 years ago
Read 2 more answers
What is the multiplicative inverse of 156
Fantom [35]

Answer is: 1/156 as a fraction

6 0
3 years ago
Which is the next step in the following construction of an equilateral triangle
Ira Lisetskai [31]

Answer: its the next portion of 123

Step-by-step explanation:

because my teacher told me

5 0
3 years ago
Other questions:
  • Jenny studied the characteristics of two species of bacteria. The number of bacteria of species A, A(t), after t hours is repres
    14·1 answer
  • Sandy drives in town at a rate of 25 miles per hour. It takes her 15 minutes to drive to the store. How far is it to the store?
    14·1 answer
  • Simplify: 2x + 9 - 17x - 15 -x​
    13·1 answer
  • Which is greater 6.0 or 0.6
    11·2 answers
  • PLEASE HELP I REALLY NEED IT
    9·1 answer
  • Nolan invested $8,100 in an account paying an interest rate of 8 3/4% compounded quarterly. Carter invested $8,100 in an account
    9·2 answers
  • Find the missing dimension<br> Height.
    9·1 answer
  • Write your answer in simplest radical form​
    12·1 answer
  • How do I graph the proportional relationship of y=2.25×​
    14·1 answer
  • Can someone answer this question please
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!