Part 1: Experimental Probabilities.
- Using a standard deck of 52 playing cards, shuffle the deck well, then draw 10 cards. Record the number of diamonds. If you do not have a deck of playing cards go to random.org, under the games and lotteries link, choose playing card shuffler.
Repeat this 27 more times (for a total of 28 trials) and record your data below. (10 pts)
Draw # of Diamonds
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28 - Based on your experimental probabilities, find the probability of getting 0 – 10 diamonds. To do this count the number of trials where you drew 0 diamonds, 1 diamond, 2, etc. Fill out the following chart using your frequencies, then find the relative frequency. Leave answers in decimals rounded to 2 decimal places. (10 pts)
of diamonds Frequency Relative Frequency =
Freq/28
0
1
2
3
4
5
6
7
8
9
10
• Make sure your frequencies add to 28.
Part 2: Theoretical Probabilities
- What is the probability of drawing a card that is a diamond from a standard deck of 52 cards? (3 pts) Double check that this answer is correct before proceeding.
Answer: ____________
- Using binomial probabilities (binompdf function on your calculator) find the following? (10 pts)
of diamonds in 10 draws Binomial Probability
binompdf(n, p, x)
0
1
2
3
4
5
6
7
8
9
10
• For extremely small probabilities (such as .00005), you can put 0+ in the chart.
- (8 pts)
Draw the probability histogram for your experimental probabilities.
Draw the probability histogram for your theoretical probabilities.
- How do you experimental probabilities compare to your theoretical ones? (4 pts)
- If you conducted your experiment 500 times what would you expect to happen? How would your experimental probabilities compare to your theoretical ones? (4 pts)