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
lidiya [134]
3 years ago
13

If you flip a coin 10 times, what is the best prediction possible for the number of times it will land on tails?

Mathematics
2 answers:
Serjik [45]3 years ago
8 0

Answer:

5

Step-by-step explanation:

The probability of tails is 1/2, so the expected value is (1/2) (10) = 5.

ludmilkaskok [199]3 years ago
4 0

Answer:

5

Step-by-step explanation:

Probability of land a tail when the coin is tossed once is 1/2 because a coin has two sides and contains one head

Then when it is tossed 10 times, the no of time a tail appears is. 1/2 * 10 =5

You might be interested in
Which equation is correct? Cos G= 8/15 ...
Troyanec [42]

Answer:

<em>(d) sin G = 15/17</em>

Step-by-step explanation:

For angle G, opp = 15, adj = 8, hyp = 17.

cos G = adj/hyp = 8/17

sin G = opp/hyp = 15/17

Answer: (d) sin G = 15/17

3 0
3 years ago
leo finished 3/4 of hus math homework the homework assignment had 36 questions how many questions did leo answer on his homework
topjm [15]

Answer:

3/4 times 36=27

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The lengths of text messages are normally distributed with a population standard deviation of 6 characters and an unknown popula
ryzh [129]

Answer:

The 80% confidence interval for the population mean is between 28.32 characters and 31.68 characters.

Step-by-step explanation:

We have the standard deviation for the population, so we can use the normal distribution. If we had the standard deviation for the sample, we would have to use the t-distribution.

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.8}{2} = 0.1

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.5 = 0.9, so z = 1.282

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.282*\frac{6}{\sqrt{21}} = 1.68

The lower end of the interval is the sample mean subtracted by M. So it is 30 - 1.68 = 28.32 characters.

The upper end of the interval is the sample mean added to M. So it is 30 + 1.68 = 31.68 characters.

The 80% confidence interval for the population mean is between 28.32 characters and 31.68 characters.

6 0
3 years ago
5/8 + 3/10 Add. Each sum in simplest form
laiz [17]

The image answer is 3/5

The other one is 35/40




3 0
3 years ago
Which one can hold more? How much more can it hold?
Trava [24]

Answer:

Michelle. 70cm³

Step-by-step explanation:

Michelle's popcorn volume: 10cm x 10cm x 13.5cm = 1350cm³

Beyunka's popcorn volume: 8cm x 8cm x 20cm = 1280cm³

Therefore, Michelle's popcorn container can hold more.

1350 - 1280 = 70cm³

8 0
3 years ago
Other questions:
  • A car, initially at rest, accelerates at 2 meters/s/s. assuming the car starts from rest, how far will it travel in 10 s?
    12·1 answer
  • Please help me ASAP!!!!!
    11·1 answer
  • Which of these shapes have rectangular cross sections when they are cut perpendicular to the base? Check all that apply.
    6·1 answer
  • D/dt integral from 0,2x of (e^t+2t)dt is?
    7·1 answer
  • Find the x and y intercepts 8x-4y= -16
    7·1 answer
  • You roll a fair number cube. What is the likelihood you will land on a number greater than 4?
    12·1 answer
  • Convert 75km/h in to m/s.
    15·2 answers
  • PLZ HELP ILL GIVE U BRAINLIEST
    7·1 answer
  • Use the distributive property to<br> expand the expression below.<br> 6(2a – 3) = [?]a - [ ]
    15·1 answer
  • There are big spenders among University of Alabama football season ticket holders. This data set Roll Tide!! shows the dollar am
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!