Answered: in order to conduct an experiment, 5…

in order to conduct an experiment, 5 subjects are randomly selected from a group of 34 subjects. How many different groups of 5 subjects are possible?

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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A random sample, without replacement, of three items is to be selected from a population of five items (labeled a, b, c, d, and e). List all possible different samples.
In a survey, students were selected at random from a certain college and were asked two questions. The first question was, "Do you believe it is wrong to hunt?". The second question was, "Do you believe it is wrong to eat meat?". The results are shown in the table. Success for the first question is identifying someone who feels that it is wrong to hunt and for the second question is identifying someone who feels that it is wrong to eat meat. Is there a significant difference in the proportion of students at this college who feel it is wrong to hunt and the proportion who feel it is wrong to eat meat? Use the a= 0.05 level of significance. Verify all conditions. Hunt Wrong (Sucess) Not wrong (Failure) Eat Meat Wrong (Success) 45 54 Not wrong (Failure) 86 257
A box contains 4 marbles: 1 red, 1 blue, 1 green, 1 yellow. Consider an experiment that consists of taking 1 marble from the box, replacing it and then drawing a second marble. Describe the sample space. How does the sample space differ if the first marble was not replaced before the second marble was drawn?
In the US, we categorize adolescent girls as either anemic, border line anemic or as having a normal level of iron in their blood. Suppose 10% of adolescent girls are anemic, 15% are border line anemic and the rest have normal iron levels in their blood. Suppose a doctor randomly selects 5 adolescent girls, tests the blood of each, and counts the number who have less than a normal amount of iron in their blood. Is this a binomial experiment?
A study contained four treatment conditions with n 5 participants in each group. What is the value of k for this study?
It’s that time of year again at Isaac’s Fireworks Store! New Year’s! Sale! Sale! Sale! However, Isaac is less than excited because last year he had a lot of complaints about a large number of defective fireworks that he sold. Isaac wants to know what percentage of his firework stock is defective. First, he plans to test his bottle rockets, so he takes a sample of 200 randomly chosen bottle rockets and he tests them. Of the 200, 14 failed. Construct a 80% confidence interval for the true proportion of bottle rockets that will fail.
Suppose you throw a fair die and flip a fair coin. Let’s represent the outcomes of 3 on the die and heads on the coin by 3H. One outcome is clearly 3H. What are the other outcomes in the sample space? Are all outcomes in the sample space equally likely? What is the probability of getting heads and number at most 3?
Sleep researchers were trying to understand the impact of cell phone use before bedtime on the amount of time it took a person to fall asleep. Using a matched pairs design, they chose 8 subjects and recorded the amount of time it took the subject to fall asleep, both when using the cell phone up to attempting to sleep and stopping using the cell phone 2 hours prior to attempting to sleep, in random order. The amount of time for each person for each attempt is recorded in the table below. Person 1 2 3 4 5 6 7 8Until Attempt 22 17 45 15 35 19 36 18Two Hours Prior 18 18 40 8 23 15 32 12Difference a. Compute the difference for each observation.b. Based on the above data compute the mean and sample standard deviation of the difference.
What would be the correct answer for this one?
Suppose a family has three children. Assume the likelihood of a girl (G) and boy (B) is the same. How many possibilities are there in the SAMPLE SPACE?
How many possible outcomes are there in the sample space of an experiment that consists of picking a ball from two different boxes, if box 1 has 4 different colored balls while box 2 has 7 different colored balls?
A coin is flipped once. If the result is a heads, the coin is flipped 2 more times, and the result (heads or tails) of each successive flip is noted. If the result is a tails, the coin is flipped 4 more times and the result of each successive flip is noted. How many possible outcomes are in the sample space of this experiment?