9.To investigate how often families eat at home, a researcher surveyed 100 adults living with children under the ageof 18 years. The survey results are shown below. What is the probability that a randomly selected family eats atleast two meals at home per week?Number of Meals eaten at home per week0123 or moreNumber of Survey Responses25302520

No. of meals eaten at home per week (x) frequency 0 25 1 30 2 25 ≥3 20 total n = 10

Answered: 9. To investigate how often families…

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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The percentages of weapons used in murders in a certain year are described in the pie chart. Complete parts (a) through (c) below. Types of Weapons Used in Murders Fireams, 64.9% Knives or other cutting instruments, 10.2% Unknown or other dangerous weapon, 13.1% Personal weapons (hands, fists, etc), 11.8% a. Find the probability that a weapon randomly selected from those used in murders in this specific year was a firearm. The probability that a weapon randomly selected from those used in murders in this specific year was a firearm is Type an integer or a decimal.) b. Find the probability that a weapon randomly selected from those used in murders in this specific year was NOT a firearm The probability that a weapon randomly selected from those used in murders in this specific year was NOT a firearm is (Type an integer or a decimal.) c. From inspecting the pie chart, a student concludes that in any year, 11.8% of weapons used in murders are personal weapons What would you tell the…
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Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the respondents, 2346 said they are willing to donate organs after death. In this survey conducted for Donate Life America, 100 adults were surveyed in each state and the District of Columbia, and results were weighted to account for the different state population sizes. a. What percentage of respondents said that they are willing to donate organs after death? b. Based on the poll results, what is the probability of randomly selecting an adult who is willing to donate organs after death? c. What term is used to describe the sampling method of randomly selecting 100 adults from each state and the District of Columbia?
18. Stress at work: In a poll conducted by the General Social Survey, 81% of respondents said that their jobs were sometimes or always stressful. Two hundred workers are chosen at random. a. Approximate the probability that 160 or fewer find their jobs stressful.
The class I'm taking is statistics! I am completely stuck. Need help. I have attached the problem. Please view attachment before answering. Thank you!
Among employed women, 25% have never been married. Select 10 employed women at random. A. The number in your sample who have never been married has a binomial distribution. What is n?n? What is p?p? B. What is the probability that exactly 2 of the 10 women in your sample have never been married? C. What is the probability that 2 or fewer have never been married? D. What is the mean number of women who have never been married? E. What is the standard deviation?
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1. You want to test to see if the claim is correct. A math teacher claims the probability that a person picked at random in Philadelphia is visiting the city is less than 40%.
. If tossing a loaded coin gives heads 60% of times, what is the likelihood (probability) of observing heads 50 times or fewer out of 100 tosses? 12 The probability of observing heads 50 times or fewer out of 100 would be 0.03 or 3 percent. use excel.
Aleem tossed a coin 50 times and recorded the results in a frequency distribution table. Outcome Frequency Heads 22 Tails 28 What is the experimental probability of tossing a head?

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