P(X=10)=P(both nickel) =(5*4)/(10*9)= | 2/9 | ||
P(X=11)=P(1 penny and 1 nickel) =2*(3*2)/(10*9)= | 2/15 |
below is pmf of X: |
|
P(X=2)= | 1/15 |
P(X=6)= | 1/3 |
P(X=10)= | 2/9 |
P(X=11)= | 2/15 |
P(X=15)= | 2/9 |
P(X=20)= | 1/45 |
expected value =E(x) =ΣxP(x) = | 9.60 |
A jar contains 3 pennies, 5 nickels and 2 dimes. A child selects 2 coins at...
A jar contains 2 pennies, 7 nickels and 3 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins. (a) Find P(x=10) (b) Find P(x=11) (c) Find the expected value of X
jar contains 7 pennies, 6 nickels and 8 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the elected coins. ind the probability X- 10. Preview Find the probability X- 11.Preview Find the expected value of X.-)" Preview
6. A box contains 5 dimes and 3 nickels. Suppose two coins are randomly selected without replacement from this box. a) (3 points) Complete the the probability distribution table below for the total amount in cents. Use reduced fraction for probabilities. 15% 204 T, total amounts in cents 10ç P(T) (b) (2 points) Graph the probability distribution histogram. .65 .45 .15 5c 100 150 20¢ 25c 30ç (c) (2 points) Find . (d) (2 points) Find the exact value for...
A jar of coins contains nickels, dimes, and quarters. The total number of coins is 12 and the total value is $2.50. How many of each coin are there?
A dish has 4 pennies, 2 nickels and 5 dimes. Randomly select 4 coins. What it the probability that the coins are all the same type? Show your work.(2 points)
A coin purse contains 4 quarters and 5 dimes. Two coins are drawn at random without replacement. Find the probability that at least one of the two coins is a quarter. Please explain step by step
6. A box contains 3 quarters and 7 nickels. Suppose two coins are randomly selected without replacement from this box. (a) (3 points) Complete the the probability distribution table below for the total amount in cents. Use reduced fraction for probabilities. T. total amounts in cents P(T) (b) (2 points) Graph the probability distribution histogram. 30 50 60 70€ 5¢ (c) (2 points) Find 10¢ . (d) (2 points) Find o. (e) (2 points) Find the exact value for o'....
2. Write a JAVA program that prints the numbe r of quarters, dimes, nickels, and pennies that a customer should get back as change. Declare and initialize all memory locations as integers. On Output show the original change amount as a monetary amount with the two positions of decimal. Run your program once by performing a compile-time initializations using 92 cents for the calue to be converted. Go into your source code and change the 92 to 27. Return the...
show work for each part 3. Suppose a bag contains 2 quarters, 1 dime, 5 nickels, and 3 pennies. a. If you randomly select one coin out of the bag, what is the probability that it is a nickel? P(N)= b. If you randomly select one coin out of the bag, what is the probability it is not a quarter? P@= c. If you select two coins with replacement, what is the probability of picking a dime (D1) and then...
Your program must meet the following specifications: 1. At program start, assume a stock of 10 nickels, 10 dimes, 10 quarters, and 10 pennies. 2. Repeatedly prompt the user for a price in the form xX.xx, where X denotes a digit, or to enter q' to quit 3. When a price is entered a. If the price entered is negative, print an error message and start over requesting either a new price or to quit (indicated by entering a 'q)...