3. The table shows the number of each Ford car sold in the United States in June. Suppose the salesrecord for one of these cars is randomly selected and the type of car is identified.Type of CarSedanConvertibleWagonSUVVanHatchbackTotalNumber7,2049,08920,41813,69115,83715,35081,589Events A and B are defined as follows.A: {Convertible, SUV, Van}B: {Fewer than 10,000 of the type of car were sold in June} Identify the sample points in the event A U B.Identify the sample points in the event A N B.Find P(A U B).Find P(AN B).a.b.c.d.

Given that N=81,589. a). The event (A or B) can be written as follows: b). The event (A and B) can…

Answered: 3. The table shows the number of each…

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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Q1) Below find the records of 12 randomly selected used pickup trucks (none used commercially) and 11 randomly selected used passenger cars, the time (in years) that they were kept by the original owner before being sold: Used pickup trucks 2.9 2.5 3 5 4.2 3.1 3.3 4 6. 5.3 3.8 4.5 Used passenger cars 3 2.2 2.8 4.3 4 3.3 2.9 2.1 3.1 3 It is known that the standard deviation of used pickup trucks is 2 years and of used passenger cars is 1 year. (a) Investigate, at the 5% significant level, whether the mean time (in years) that used pickup trucks were kept by the original owner before sold is larger than used passenger cars. (b) What assumption is needed to perform the test in (a). (c) Construct the 96% confidence interval for the mean difference of time (in years) were kept by the original owner before sold between used passenger cars and used pickup trucks. Use this confidence interval to tell whether there is difference in the mean time (in years) between these 2 types of vehicles.
Please answer number two
1. Suppose 1495 Valencia College students were selected at random from the entire student body and given an experimental H1N1 flu shot. All 1495 were exposed to the flu, but only 332 of them actually ended up sick with the flu. Let p represent the probability that the flu shot will be successful. (Read this carefully!) A. Find the point estimate for the population proportion from this study. Show your simplified fraction for the point estimate. Use proper notation. B. Build a 98% confidence interval for the real population proportion by hand using the formula. Draw a picture that represents the problem and clearly indicate your final answer C. Use a complete sentence or two to interpret your confidence interval.
A national park is famous for its beautiful desert landscape and its many natural rock formations. The following table is based on information gathered by a park ranger of all rock formations of at least 3 feet. The height of the rock formation is rounded to the nearest foot. Height of rock formation, feet 3–9 10–29 30–49 50–74 75 and higher Number of rock formations in park 118 99 36 39 17 For a rock formation chosen at random from this park, use the preceding information to estimate the probability that the height of the rock formation is as follows. (Round your answers to two decimal places.) (A) 75 feet or taller?
3. Write a set of 6 unique numbers that is skewed to the left and has a mean of 6 and a median of 8.
38
Find the mode of the following number of countries randomly selected travelers visited in the past two years. 13,13,15,7,8,4,4,7,13
The ages of the 36 millionaires sampled are arranged in increasing order in the following table. 31, 37, 39, 39, 42, 42, 45, 47, 4848, 48, 52, 52, 53, 54, 54, 57, 5960, 61, 64, 64, 66, 66, 67, 68, 6869, 71, 71, 74, 75, 77, 79, 79, 79 a. Find and interpret the five-number summary.b. Identify potential outliers, if any.c. Construct and interpret a box plot.
A national park is famous for its beautiful desert landscape and its many natural rock formations. The following table is based on information gathered by a park ranger of all rock formations of at least 3 feet. The height of the rock formation is rounded to the nearest foot. Height of rock formation, feet 3–9 10–29 30–49 50–74 75 and higher Number of rock formations in park 115 90 21 26 18 For a rock formation chosen at random from this park, use the preceding information to estimate the probability that the height of the rock formation is as follows. (Round your answers to two decimal places.) (a) 3 to 9 feet(b) 30 feet or taller(c) 3 to 49 feet(d) 10 to 74 feet(e) 75 feet or taller
The number of cities with populations of 75,000 or more is depicted in the histogram. How many cities have between 100,000 and 499,999 people? A: 75,000-99,999 180- 160- 140- 120- * 100- 80- 60- 40- 20- 0- В: 100,000-199,999 C: 200,000-499,999 D: 500,000-999,999 E: 1 million or more A E Population of city ..... cities have a population between 100,000 and 499,999 people. (Type a whole number.) Number cities
3. The director of library services at Fairmont College did a survey of types of books (by subject) in the circulation library. Then she used library records to take a random sample of 4217 books checked out last term and classified the books in the sample by subject. The results are shown below. Subject Area % Books in Circ Library on this Subject No. of Books in the Sample on this Subject Business 32% 1210 Humanities 25% 956 Natural Science 20% 940 Social Science 15% 814 Other Subject 8% 297 Using a 5% level of significance, test the claim that the subject distribution of books in the library fits the distribution of books checked out by students.
Find the mode of the following number of states randomly selected travelers at a service plaza visited in the past three years. 18,13,8,8,13,10,13,10,9,18.

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