Please Complete the following problems. Be surall work, when required. Be careful to use proper labels, variables, andsentences.For (1-4) The number of endangered species for several groups are listed here:MammalsBirdsReptilesAmphibiansUnited States63781410Foreign2511756481. Find the probability a randomly selected endangered species is a bird or from the US.2. Find the probability a randomly selected endangered species is foreign.3. Given the endangered species is a mammal, find the probability it is foreign.

The data is given by Mammals Birds Reptiles Amphibians Total U.S 63 78 14 10 165 Foreign…

Answered: Please Complete the following problems.…

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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Task-1. A professor at a university is wishing to determine whether his introductory statistics class has a good grasp of basic math or not. For this purpose, he chooses six students from his class and gives them a math proficiency test. To have a good grip of basic maths, the professor wants the class score above 70 marks on the test. The scores that the sample of six students gets are 62, 92, 75, 68, 83, and 95. Can the professor say with 90% confidence that the mean score for the whole class on the test would be above 70?
For each statement. decide whether descriptive statistics is used. O a. In 2013, the number of high school graduates will be 3.2 million students. Source: National Center for Education. O b. None of these. O C Researchers stated that the shape of a person's ears is related to the person's aggression. Source. American journal of Human Biology O d. A diet high in fruits and vegetables will lower blood pressure. Source: Institute of Medicine. O e. The total amount of estimated losses from hurricane Hugo was $4.2 billion. Source: Insurance Service Office
Directions: Solve the following: 1. There are five newly hired salespersons at Toyota Manila Branch. The number of cars sold by each newly hired salesperson last month is 5, 8, 9, 11, and 13. a. Complete the information needed in the table below. b. How many samples of size 2 are possible? c. List all possible sample of size 2, and calculate the mean of each sample. d. Calculate the mean of the sample means and the population mcan. e. Calculate thc dispersion in the population with that of the sample means. Observation Sample of Size 4
Determine if the following is an example of descriptive or inferential statistics. 85 randomly selected fifty-year-old Americans were asked how much money they had saved for their retirement. The average for these respondents was $25,000, the minimum was $0 and the maximum was $1,200,000. Descriptive Statistics Inferential Statistics
Example 6.14 Convert the set of numbers 6, 7, 5, 10 and 12 into standard scores:
Solve it on the paper.
6. At the end of 10 games, the mean score of Gilas Pilipinas is 100 points per game. At the end of 11 games, their mean score has gone down to 95 points per game. How many points did they score in the 11th game? O 45 points O 80 points O 55 points O 70 points O 65 points
A certain affects virus 0.8% of the population. A test used to detect the virus in a person is positive 88% of the time if the person has the virus (true positive) and 13% of the time if the person does not have the virus (false postive). Fill out the remainder of the following table and use it to answer the two questions below. (enter answer with no commas, i.e. as 1000 not 1,000.) Infected Not Infected Total Positive Test [a] [b] [c] Negative Test [d] [e] [f] Total 800 99,200 100,000 i) Find the probability that a person has the virus given that they have tested positive. (Round your answer to the nearest tenth of a percent and do not include a percent sign.)[g]_______ % ii) Find the probability that a person does not have the virus given that they test negative. (Round your answer to the nearest tenth of a percent and do not include a percent sign.)[h]________ %
Pick six numbers and compute the mean and the median of the numbers a. Now add 12 to each of your original numbers and compute the mean and the median for this new set of numbers. b. How does the mean of the new set of data compare with the mean of the original set of data? c. How does the median of the new set of data compare with the median of the original set of data?
Consider the following Venn diagram that summarizes the data from 50 people. How many people own just one pet? Birds 10 10 1. 2. 2. Cats Dogs 32 22 25 20 cer
Suppose there are 5 students in a room. The mean age is 19.8 years, and the median age is 19. If the youngest person leaves and is not replaced by another person, what happens to the mean and the median? O The mean and median increase. The mean increases, and the median either increases or stays the same. The mean increases, but it is impossible to determine whether the median increases, decreases, or stays the same. The mean increases, and the median stays the same. The median increases, and the mean either increases or stays the same.

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