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
ANTONII [103]
2 years ago
9

Quiz consists of 60 true or false questions. If the student guesses on each​ question, what is the standard deviation of the num

ber of correct​ answers? Round to the nearest thousandth.
2 0r 3.873 or 0 or 5.477
Mathematics
1 answer:
anyanavicka [17]2 years ago
6 0

Answer:

5.477 ok my friend oooooo

You might be interested in
Farmers often sell fruits and vegetables at farmers’ markets during the summer. Each tomato stand at the Bentonville farmers’ ma
olga nikolaevna [1]

Answer:

the probability that all tomatoes are sold is  0.919 (91.9%)

Step-by-step explanation:

since the random variable X= number of tomatoes that are demanded,  is normally distributed we can make the standard random variable Z such that:

Z=(X-μ)/σ = (83 - 125)/30 = -1.4

where μ= expected value of X= mean of X (since X is normally distributed)  , σ=standard deviation of X

then all tomatoes are sold if the demand surpasses 83 tomatos , therefore

P(X>83) = P(Z>-1.4) = 1- P(Z≤-1.4)

from tables of standard normal distribution →P(Z≤-1.4)=0.081 , therefore

P(X>83) = 1- P(Z≤-1.4)  = 1 - 0.081 = 0.919 (91.9%)

thus the probability that all tomatoes are sold is  0.919 (91.9%)

6 0
3 years ago
3/4 (x - 3) - 5 = 1/8 ( x - 1 )
KonstantinChe [14]

Answer:

x = - \frac{57}{5}

Step-by-step explanation:

\frac{3}{4} (x - 3) - 5 = \frac{1}{8} (x - 1)

Multiply through by 8 to clear the fractions

6(x - 3) - 40 = x - 1 ← distribute parenthesis and simplify left side

6x - 18 - 40 = x - 1

6x - 58 = x - 1 ( subtract x from both sides )

5x - 58 = - 1 ( add 58 to both sides )

5x = - 57 ( divide both sides by 5 )

x = - \frac{57}{5}

3 0
2 years ago
State if triangle is acute obtuse or right
AnnyKZ [126]

Answer:

The triangle is acute

3 0
2 years ago
HELP ASAP ONLY ANSWER IF YOU KNOW ANY WRONG/ JOKE ANSWERS WILL BE REPORTED
joja [24]

Answer:

The answer would be B.

Because if you multiply all the numbers of ABC then go through the list of the A'B'C' options only B matches up

8 0
3 years ago
Unite rate. 3 cans of soup for $0.99
soldi70 [24.7K]

Answer:

$0.33

Step-by-step explanation:

Unit rate=1

if 3 equal to $0.99, then

1 will equal $0.33.

0.99/3=$0.33

5 0
3 years ago
Read 2 more answers
Other questions:
  • Select true or false to tell whether the following conditional pq is true or false. Use the truth table if needed.
    5·1 answer
  • (20 POINTS!!!) which of the following terms describe the relationship between <CFD and <DFE? Chose all that apply. (2)
    11·1 answer
  • How do you solve this equation with variables on both sides <br> 3x-6=7x+1
    11·2 answers
  • The sides of rectangle feild (x+3)m and (x+7)m find the area of the feild
    7·1 answer
  • Please answer question in picture
    13·1 answer
  • Simplify the following
    11·1 answer
  • النسبه المئويه بين ٣٠٠ جرام و ٥‚١ كجم تساوي
    15·1 answer
  • I will give brainliest to whoever helps me with this question. Also, if you could please explain to me how you solved it I would
    8·1 answer
  • What is the answer? becuase i am just confused
    10·1 answer
  • Review the debate between former presidents, Jimmy Carter and Ronald Reagan. In a three paragraph essay of (4-5 sentences each),
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!