95% of citizens vote at election time. What is probability that 2 of the next 10...
ard deviation for the given sample data California intend to vote Democratic in the next election. If we choose 3 opre al random, what is the probability that 1 of them will vote Democratic? 5. The table below shows the amounts collected from the first 23 donors in a charity drive. CHARITY DRIVE DONATIONS Amount of donations SI $5 SI0 $20 $25 Number of donors 8. 6. 4. a) What is the mode of the amounts collected from the first...
Question 2: A company generally purchases large lots of a certain type of laptop computers. A method is used that rejects a lot if more than 2 defective laptops are found in a lot. Past experience shows that 10% laptops are defective. What is the probability of rejecting a lot of 20 units? What is the probability that in a batch of 20 laptops between 3 and 5 (inclusive) laptops are defective? On the average how many defective laptops are...
Calculate the following questions: (i) Calculate the probability of: 2 (a) Tossing four coins and all coming out Heads; 2 (b) The first two numbers coming out in the UK Lottery being in the 30s; 2 (c) Being the fourth person selected from a group of 12; 2 (d) Taking a brown chip from each of three bags, all with 16 chips in total of which 8 are brown in one bag, 10 are brown in another bag and 6...
What is the probability of completing the National Holiday Toy project in 95 time units? Carry at least 3 decimal places in all calculations, enter the final value in 3 decimal places. Act. ID Description Predecessor Optm. (a) Most likely (m) Pess. (b) Act time te Variance [(b 2 a)/6]2 Critical 1 Design package None 6 12 24 13 9 x 2 Design product 1 15 19 28 19.83 4.69 x 3 Build package 1 4 7 10 7 1...
For each problem below, state the distribution, list the parameter values and then solve the problem. You may use Excel to solve but you still need to list the distribution name and parameter value(s). For example: Poisson distribution, x=5, p=0.24, P(5; 0.24) = 0.78 a) A skeet shooter hits a target with probability 0.6. What is the probability that they will hit at least four of the next five targets? b) You draw a random sample of 12 first graders...
l) lf 25% of U.S. federal prison inmates are not US. citizens, find the probability that 2 randomly selected federal prison inmates will not be U.S. citizens. 2) Three cards are drawn from a deck without replacement. Find these probabilities. a. Al are jacks. b. All are clubs. c. All are red cards. For a recent year, 0.99 of the incarcerated population is adults and 0.07 is female. If an incarcerated person is selected at random, find the probability that...
The probability that a certain kind of component will survive a shock test is .8. 1. Find the probability that exactly 2 of the next 6 components you test will survive. 2. What is the probability that you must test 8 components to find two that fail? 3. What is the probability that the 4th component you test is the first one that fails the test? 4. Out of a group of 100 components, 20 would fail a shock test....
1) The following frequency distribution analyzes the scores on a math test. Find the probability that a score than $2 was achieved Interpret the folowngprobability statement using the frequentist interpretation of probability. The proformed in a month what can be concluded? this particular type of surgery will be successful. If 46 of these surgires are 3) In a competition, two people will be selected from four finalists to receive the first and second prizes. The winners will be selected by...
1. A salesperson has successes on 2 out of 10 cold calls. What is the probability of getting 3 successes in 9 cold calls? 2. If the probability of success on a cold call is .20, and 500 cold calls are made, what is the probability of less than 84.5 successes? (use normal distribution to approximate the binomial, so need mean = np and st.dev = sqrt(npq) ) 3. In the past, the probability of success of a cold call...
1/ Consider the following table. Defects in batch Probability 2 0.18 3 0.29 4 0.18 5 0.14 6 0.11 7 0.10 Find the standard deviation of this variable. 1.52 4.01 1.58 2.49 2/ The standard deviation of samples from supplier A is 0.0841, while the standard deviation of samples from supplier B is 0.0926. Which supplier would you be likely to choose based on these data and why? Supplier B, as their standard deviation is higher and, thus, easier to...