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
elixir [45]
2 years ago
5

A student takes an exam containing 16 true or false questions. If the student guesses, what is the probability that he will get

exactly 14 questions right
Mathematics
1 answer:
almond37 [142]2 years ago
5 0

Answer:

0.001831055

Step-by-step explanation:

Here, n = 16, p = 0.5, (1 - p) = 0.5 and x = 14

As per binomial distribution formula P(X = x) = nCx * p^x * (1 - p)^(n - x)

We need to calculate P(X = 14)

P(x =14) = 16C14 * 0.5^14 *(1-0.5)^2

               = 120 * 0.5^14 *(1-0.5)^2

= 0.001831055

You might be interested in
Find the quotient if the dividend is 2.26 · 108 and the divisor is 0.013. ([] = The Exponents) 5.75 × 10 [-11] 1.738 × 10 [6] 1.
Neko [114]

Answer:

the answer is the question B!!

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Given a circle U which has a center at coordinates (1,3) and a point on its circumference at (2, 2), what is the area of the cir
dalvyx [7]
The answer is b.) sorry if I’m wrong but I did the work and got b.)
8 0
2 years ago
What is the fraction of 36000
ivann1987 [24]
36000 over 1 to get the fraction of 36000
8 0
3 years ago
Figure A maps to figure B with a scale factor of 4/9<br> What is the value of x?
FinnZ [79.3K]

Answer:1/2

Step-by-step explanation:

Given : Figure B is a scaled copy of Figure A.

We know that the scale factor is the ratio of the corresponding sides of two similar figures.

From , the graph we assume that that one point = one unit of length.

Then, the dimension of one side of figure A = 4 units and the  dimension of  corresponding side of Figure B = 2.

Then, the scale factor is given by 1/2

3 0
3 years ago
Read 2 more answers
in 1970, a record 1.5 inches of rain fell in Basse Terre, Guadeloupe in the Caribbean. At this rate, how much rain fell in 3 sec
arsen [322]

In 1970, a record 1.5 inches of rain fell in one minute at Brasse Terre, Guadalupe in the Caribbean. At this rate how much rain fell in 3 seconds or 0.05 of a minute? A 3 inches... B 0.075 inch... C 0.75 inch... D 30 inch. Pick one. Evan chose D as the correct answer. How did he get that answer?

Answer:

0.075 inches

Option B is correct.

Step-by-step explanation:

Given.

The rain fall rate is 1.5 inches per minute.

How much rain fall in 3 second or 0.05 of minute?

First we find rain fall rate in one second.

1.5 inch/min=\frac{1.5}{60} inch/second\\=0.025 inch/second

So, 0.025 inches of rain fall in one second.

Therefore, the rain fall in 3 second is

= 3\times 0.025\\=0.075 inches

The rain fall in 3 second is 0.075 inches.

If you chose option D is correct

If the rain fall is continue to 20 min at the rate of 1.5 inches per min, then the rain fall will be 30 inches.

The rain fall in 3 second is 0.075 inches.

3 0
3 years ago
Other questions:
  • Kiko baked a batch of cookies. She ate 3 cookies and then gave half of the remaining cookies to her friends. If c represents the
    6·1 answer
  • Summer is having a pool party at her house In the ice chest me are of lemonade and 13 bottles of water If she randomly grabs abo
    13·1 answer
  • Please help with this!
    14·1 answer
  • Convert 10.3 cm into m
    14·2 answers
  • Alfonso solved a division problem by drawing an area model . a. Look at the area model . What division problem did Alfonso solve
    6·1 answer
  • in the accomparing diagram, the width of the inner rectangle is represented by u- 3 and the length by x + 3. The width at the ou
    7·1 answer
  • What's the slope of the line
    12·2 answers
  • Cora charges $20 for each lawn she mows. However, she has to pay her father $12
    8·1 answer
  • A linear function forms a line. true or false​
    6·1 answer
  • If sin(x)=cos(y). which of these are possible answers​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!