Read carefully and answer 4 questions as follows.Genetic theory indicates that the probability that a Dame's Rocket (floweringherbaceous plant) has white flowers is 1/4, pink flowers 1/2, and purple flowers 1/4.In a random selection of 5 of these plants,1. What is the probability four have white flowers?2. At least four white flowers?3. What is the mean and variance of the number of white flowered plants in 5?4. How many flowers (n) must be randomly selected if we require that the probabilityof observing at least one white flower is 0.95?

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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5. In a single throw of a pair of dice, how many sample point(s) will have a sum of 12? а. 0 b. 1 с. 2 d. 3 6. Which graph shows the probability distribution of a random variable where the probabilities (y-axis) of the sample points (x-axis) are represents by vertical bars. a. Bar graph b. Frequency polygon c. Probability histogram d. Scatter graph 7. Which function assigns a probability value to a discrete random variable and is defined by a discrete probability distribution? a. Probability mass function b. Density function c. Discrete function d. Function of x and y
9. In a large population, 57% of the people have been vaccinated. If 5 people are randomly selected, what is the probability that at least one of them has been vaccinated?Give your answer as a decimal to 4 places.
13) Approximately 59.4% of adults have added bleach to their laundry. Assume six adults are randomly selected. Find the probability that at most one adult have added bleach to their laundry. Round the answer to four decimals digits.
8. Find the probability of selecting two 8s when two cards are drawn (without replacement) from a standard deck of cards. 1. 221 221 3. 676 1 676 9. Use the following scenario and frequency table to answer the question Savannah wants to keep in touch with classmates and friends over th
2. In the Wheel of Fortune, there is a 1/9 = 11.1% probability of spinning "BANKRUPT" on any given spin. Interpret the probability. %3D
2.Suppose that 60% of middle school students in San Diego wear braces. A random sample of 250 San Diego middle school students is selected. a.What is the mean and standard deviation of the 250 samples students that will have braces? b.What is the probability that at most 190 students in the sample wear braces?
5.1.27 Question.Help In a state's Pick 3 lottery game, you pay $1.31 to select a sequence of three digits (from 0 to 9), such as 133. If you select the same sequence of three digits that are drawn, you win and collect $444.95. Complete parts (a) through (e). a. How many different selections are possible? 1,000 b. What is the probability of winning? 0.001 (Type an integer or a decimal.) c. If you win, what is your net profit? $ 443.64 (Type an integer or a decimal.) d. Find the expected value. S(Round to the nearest hundredth as needed.) (A) More Enter your answer in the answer box and then click Check Answer. Anewer Clear All 1 part remaining MacBook Air 44 F9 888 4 ER F7 F5 F6 esc %23 2$ % & * delete 6 7 8 9 2 3 4 Y Q W tab enter K retu A S F G caps lock .. .. つエト

2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:
10. A sample of cars was studied. In the sample, 26 white cars were observed, 23 black, 19 grey and 13 silver. What is the probability a car in the study was black?
6. Roll one fair four-sided die and one fair five-sided die. The four-sided die is red and the five-sided die is blue. Let X be the outcome on the red die. Let Y be the outcome on the blue die. Find the mean for the distribution of X + Y.
2. If there are 5 pieces of gum and 3 candies in a box and 3 of them are taken at random, generate the probability distribution for the number of candies that came out in the sample.
26. The probability of Marcelina scoring above an 85 in a Statistics 3 What is the probability of her scoring above an 85 in 4 test is - exactly three of the four tests this second grading period?

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