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
katrin [286]
2 years ago
12

A coin is tossed 3 times. what is the probability of obtaning two heads out of the 3 tosses

Mathematics
1 answer:
Nataly [62]2 years ago
3 0
I answered a similar problem yesterday.
In three coin tosses there are 8 possible outcomes:
H H H
H H T
H T H
T H H
T T H
T H T
H T T
T T T

Of those results, four out of the eight have at least 2 tails and so the probability is (4/8) or50%

If you need the probability of getting EXACTLY 2 tails then the probability is (3/8) or .375


You might be interested in
1140 was rounded to the nearest ten.<br>What is the upper bound?<br>​
zloy xaker [14]

Answer:

1145

Step-by-step explanation:

  • <em>The upper bound is the smallest value that would round up to the next estimated value</em>.

Since the number was rounded to nearest ten, the upper bound is:

  • 1145

which rounds up to 1150 which is the next estimated value greater than 1140

8 0
3 years ago
Read 2 more answers
The 2016 Minneapolis Resident Survey was a questionnaire that the City of Minneapolis issued to its randomly chosen residents. I
sukhopar [10]

Answer: I and III

Step-by-step explanation:

We observe in the case provided that the researcher, who has no interest in the population to intervene, is going to carry out surveys to assess whether the neighborhood is a good place to live, obtaining the following conclusions:

i. The Minneapolis Resident Survey was an observational study.

ii. The Minneapolis Resident Survey was an experiment.

iii. The figure 50.1% is a descriptive statistic for the sample.

iv. The figure 50.1% is a statistical inference for the population.:By estimating the sample, obtained by a lower percentage of the total of the respondents, it is known that with a 95% confidence interval that the rating obtained from the respondents considering that the neighborhood is a good place to live was found between 0.44 and 0.50, taking this interval as a statistical inference for the population.

The correct answer is I and III, since in this study no interventions were made to the population and only one observation of a characteristic of the neighborhood was made and in III we know that the descriptive statistic only describes data and summarizes it, which is a of the ways to display the data from the descriptive survey.

3 0
3 years ago
Help! Exponential Equation WITHOUT CALCULATOR
ale4655 [162]
&#10;1.&#10;(2^{x} -2^{-x})^{2} = 4^{2} \\ \\2^{2x}-2*2^{x}*2^{-x} + 2^{-2x} =4^{2} \\ \\2^{2x}-2*2^{x-x} + 2^{-2x} =4^{2} \\ \\ 2^{2x}+ 2^{-2x} - 2=16 \\ \\ 2^{2x}+ 2^{-2x} = 18&#10;&#10;\\ \\ 2.( 2^{x})^{3} - (2^{-x}^) ^{3}= (2^{x} -2^{-x})(2^{2x}+2^{x}*2^{-x}+2^{-2x})&#10;\\ \\ ( 2^{x})^{3} - (2^{-x}^)^{3}=(2^{x} -2^{-x})(2^{2x}+2^{-2x}+2^{x}*2^{-x})&#10;\\ \\ ( 2^{x})^{3} - (2^{-x}^)^{3}=(2^{x} -2^{-x})(2^{2x}+2^{-2x}+1)&#10;\\ \\ ( 2^{x})^{3} - (2^{-x}^)^{3}=(2^{x} -2^{-x})((2^{2x}+2^{-2x})+1)&#10;

\\ \\ ( 2^{x})^{3} - (2^{-x})^{3} =(4)((18)+1)= 76&#10;\\ \\ 2^{3x}-2^{-3x} =76&#10;
4 0
3 years ago
Find the area of the figure.<br> A-56cm^2<br> B-88cm^2<br> C-112cm^2<br> D-384cm^2
julia-pushkina [17]
  • firstly find the area of the square which is sidexside=8x8=64cm^2
  • then find the area of the triangle which is 1/2xbasexhight=1/2x8x6=24cm^2
  • THEN add both areas (64+24)=88cm^2

4 0
3 years ago
Match each description when z = 9 + 3i. 1. Real part of z 2. Imaginary part of z 3. Complex conjugate of z 4. 3i - z 5. z - 9 6.
sergey [27]
1)\quad \Re(9+3i)=9\qquad\text{F}\\\\&#10;2)\quad \Im(9+3i)=3\qquad\text{E}\\\\&#10;3)\quad \overline{(9+3i)}=9-3i\qquad\text{D}\\\\&#10;4)\quad 3i-(9+3i)=3i-9-3i=-9\qquad\text{A}\\\\&#10;5)\quad 9+3i-9=3i\qquad\text{B}\\\\&#10;6)\quad 9-(9+3i)=9-9-3i=-3i\qquad\text{C}\\\\
5 0
3 years ago
Other questions:
  • A silent auction was held for a quilt donated for charity. Fifteen bids that were drawn randomly are listed here. What percentil
    15·2 answers
  • Assuming that a computer has been used to compute a P-value = 0.01635, what can we conclude about the following situation? A sim
    11·1 answer
  • On Sunday, Antonio spent a total of 3 1/4 hours driving and 1 3/4 hours gardening. How much longer did he spend driving then gar
    11·1 answer
  • What is x if <br> Show your working<br> 4x+5=5x-1
    9·1 answer
  • I need help with number 13, PLEASE. Extra points!
    11·1 answer
  • The graph shows two lines PLS EXPLAIN YOUR ANSWER
    6·1 answer
  • Find the area of each show work please answer do no<br> t just skip please
    10·1 answer
  • Christopher is 20 years younger than Ishaan. Ishaan and Christopher first met two years ago. Fourteen years ago, Ishan was 3 tim
    7·2 answers
  • Multiply the following 2 1/8 × 16​
    15·2 answers
  • B - 8 = 9<br> ---------------
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!