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
Gennadij [26K]
3 years ago
7

Two cards are chosen at random without replacement from a pack of 52 playing cards if the first card chosen is an Ace what is th

e probability the second card chosen is also an ace
Mathematics
2 answers:
jonny [76]3 years ago
7 0
So originally you have 52 cards which means that no matter what card you want it'll be a 1/52 chance pulling that exact card.

You pull an Ace which gives you 51 cards left, and a 1/51 chance of pulling the card you want.

You want another Ace, and since it's a full deck of cards means that there should be 3 Aces left in the deck.

Probability of pulling another Ace is 3/51. Hope this Helps.
Amiraneli [1.4K]3 years ago
5 0
Since we removed one ace out of 52 cards now remains 51 cards and 3 aces.
The answer is 3/51
You might be interested in
The double number line shows that in 2 minutes, Pogo the dog can fetch a Frisbee 6 times.
Zolol [24]

Answer:

12 times (double the times since we are doubling the minutes)

Step-by-step explanation:

2/6 = 4/x

Use cross multiplication

2x = 6*4

2x = 24

x = 12

5 0
3 years ago
Read 2 more answers
What is m∠VWX? 75° 69° 119° 25°
Bogdan [553]

Answer:

Step-by-step explanation:

Sum of interior angles of a triangle = Exterior angle

m∠VWX + m∠WVX = Exterior angle = 155°

m∠VWX + 86° = 155°

m∠VWX = 69°

6 0
3 years ago
Read 2 more answers
An experiment to investigate the survival time in hours of an electronic component consists of placing the parts in a test cell
mixer [17]

Answer:

a) The sample mean is of 49 and the sample standard deviation is of 11.7.

b) The range of the true mean at 90% confidence level is of 9.62 hours.

c) The prediction interval, at a 90% confidence level, of it's failure time is between 39.38 hours and 58.62 hours.

Step-by-step explanation:

Question a:

Sample mean:

\overline{x} = \frac{34+40+46+49+61+64}{6} = 49

Sample standard deviation:

s = sqrt{\frac{(34-49)^2+(40-49)^2+(46-49)^2+(49-49)^2+(61-49)^2+(64-49)^2}{5}} = 11.7

The sample mean is of 49 and the sample standard deviation is of 11.7.

b)Determine the range of the true mean at 90% confidence level.

We have to find the margin of error of the confidence interval. Since we have the standard deviation for the sample, the t-distribution is used.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 6 - 1 = 5

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 5 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 2.0.150

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample. So

M = 2.0150\frac{11.7}{\sqrt{6}} = 9.62

The range of the true mean at 90% confidence level is of 9.62 hours.

(c)If a seventh sample is tested, what is the prediction interval (90% confidence level) of its failure time.

This is the confidence interval, so:

The lower end of the interval is the sample mean subtracted by M. So it is 49 - 9.62 = 39.38 hours.

The upper end of the interval is the sample mean added to M. So it is 49 + 9.62 = 58.62 hours.

The prediction interval, at a 90% confidence level, of it's failure time is between 39.38 hours and 58.62 hours.

4 0
3 years ago
What is 8 tenths minus 5 hundredths?
Alex777 [14]
0.8 - 0.05 = 0.75

0.75
is the answer.

or 3/4ths
8 0
3 years ago
Read 2 more answers
Graph the equations y=x-2 and x + y = 6 on the grid provided.
Colt1911 [192]

Formulas:

y=x-2

y=-1x+6

You'll basically just graph these which you said you can do, and if you don't want to, just input these formulas in Desmos Graphing Calculator, and the point that they intersect is your answer for the point of intersection

7 0
3 years ago
Other questions:
  • The width of a rectangle, in feet, is represented by (3x-1.5). The length of the rectangle, in feet, is represented by (1.25x+3)
    12·1 answer
  • Which of the following statements is true about the division expression 686.54 ÷ a? A. If a is a number greater than 686.54, the
    9·1 answer
  • Which of the following is a true statement?
    8·1 answer
  • The sum of two numbers is 34. The smaller number is 6 less than the larger
    5·1 answer
  • Given the prime factorisation of the each of
    15·1 answer
  • For what value of a is (a,9) a solution for the equation y=2x+1?
    8·1 answer
  • -2x + 11 + 6x<br> What is the answer?
    10·1 answer
  • Y= - 2x + 4<br> 2x + y = 4
    11·2 answers
  • Combine the radicals -2 Square root 13 + 19 Square root 13
    10·1 answer
  • What effect does 'h' have on the graph of a parabola?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!