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
KatRina [158]
3 years ago
15

A normal distribution has a mean of 75 and a standard deviation of 10 use the standard normal table to find the probability that

a randomly selected X value from the distribution is less than or equal to 50
A. -2.5
B. 0.0062
C. 0.9938
D. 2.5
Mathematics
1 answer:
-BARSIC- [3]3 years ago
7 0

Answer:

0.006

Step-by-step explanation:

We are actually looking for the area under the standard normal curve to the left of 50.  The proper distribution function on my old TI calculator is normalcdf(:

normalcdf(-1000,50,75, 10),

which returns 0.006   (Answer B)

You might be interested in
Find two consecutive even integers such that twice the smaller is 16 more than the larger
drek231 [11]
<u>Define x:</u>
Let one of the numbers be x.
The other number is x + 2

<u>Construct equation:</u>
<span>twice the smaller is 16 more than the larger
</span>⇒2x = x + 2 - 16

<u>Solve x:</u>
2x = x + 2 - 16
x = -14

<u>Find the two numbers:</u>
Smaller number = x = -14
Larger number = x + 2 = -12

Answer: The two numbers are -14 and -12
6 0
2 years ago
Read 2 more answers
Using appropriate properties find. 2/5×(-3/7)-1/6×3/2+1/14×2/5​
BigorU [14]
Not for sure but maybe, -0.39285714285 if it’s correct hope it helps!
7 0
3 years ago
annas salary is four times emilys salary. they decode to share the cost of a 120 dollar gift. anna will contribute four timess a
Charra [1.4K]

Answer:

lets say they share the cost in 5 parts, because Anna will distribute 4 time as much as Emily.

120 / 5 = 24

Emily: $24 (1/5 of 120)

Anna: $24 * 4 = $96 (4/5 of 120)

5 0
3 years ago
What two mixed numbers have a sum of 3
jeka57 [31]
<span>There are a few combinations of mixed numbers that can have a sum of 3. A mixed number must have one whole number and one fraction. Combinations of mixed numbers that can have a sum of 3 are 1 and 1/2 + 1 and 1/2, 1 and 1/3 + 1 and 2/3, 1 and 5/8 + 1 and 3/8 and so on.</span>
7 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!
yan [13]
C. The area is increased by an area of 25

8x7=56
40x35=1400

1400/56=25
7 0
3 years ago
Read 2 more answers
Other questions:
  • James has 38 stamps in his stamp collection. He collects about 6 stamps a month. How many stamps will James have in 7 months?
    11·2 answers
  • The value of 9 in 13.98 is 10 times 1 time or 1/10 times the value of 9 in 559.7.
    10·1 answer
  • the simple interest paid on a loan over a period of two and a half years is birr 375. if the rate of interest was 8% per annum,
    7·1 answer
  • Will mark brainliest+ 10 points
    6·1 answer
  • Which choice shows the students listed in order from who has the least amount of money to who has the greatest amount of money
    9·1 answer
  • Evaluate 4c + 8 when c = 2
    10·2 answers
  • The American Management Association is studying the income of store managers in the retail industry. A random sample of 49 manag
    9·1 answer
  • Expand. Put the boxes in order to show the correct expansion.
    9·1 answer
  • Please help!! 15 points!!
    9·2 answers
  • Lol I need help with this one too
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!