The results of the survey are listed next. How Safe is Uber? Responses (%) Very safe 17 Somewhat safe 28 Somewhat unsafe 21 Very unsafe 12 Not sure 22 If one person surveyed is selected at random find the following probabilities a) Person selected said Very safe b) Person selected said Very safe or Somewhat safe c) Person said it was Very unsafe

Q: Sample again from 1 to 1000 but look at the last digit of the sample squared. That square could end…

A: Here, we are asked to find the square of a number between 1 and 1000 and look at its last digit. To…

Q: 1. What is the probability that a randomly chosen person from the survey works in the city and takes…

A: Using the basic concept of probability:Probability = X/Nwhere:X = number of favorable outcomesN =…

Q: 1. Use the following information to create a Venn diagram. Make sure to include a title and labels.…

A: Given data: The total numbers of people are n(U)=300. The numbers of people who prefer chocolate are…

Q: The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: How many individuals are described in this table? How many females were among the respondents? The…

A: Given that Opinion Female Male Almost no chance 138 106 Some chance but probably not 162…

Q: This is a contingency table showing the relationship between 2 internet use and income. Contindency…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 7.a What is the expected number of vehicles per household for residents of Ann Arbor? Provide an…

A: E[x] =∑xP(x)

Q: CHECK YOUR UNDERSTANDING IN In a study of 203 young male/female couples, each partner privately…

A:

Q: MSELFtest 23. Suppose that you are given a decision situation with three possible states of nature:…

A: 23)  Answer:- Given, The prior probabilities are P(s1) = 0.2 , P(s2) = 0.5 , and P(3) = 0.3 . With…

Q: A machine is set to fill the small-size packages of M&M candies with 70 candies per bag. A sample…

A: The formula of degrees of freedom is, Where,   n denotes the number of observations.

Q: random sample is which of the following?  A. Probability that an item is selected for the sample is…

A: Random sampling: A simple random sample of size n is collected from a large population where each…

Q: How many individuals are described in this table? How many females were among the respondents? The…

A: It is given that The individuals are classified according to gender and the question asked about…

Q: 2) A pharmaceutical factory has 8 contacts for the wholesale of medicine, and the company believes…

A: To find: a. The Probability that the factory makes at least two sales. b. The Probability that the…

Q: A professor using an open source introductory statistics book predicas that 10% of the students will…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: In the decision tree shown below, how many state of nature nodes are shown? Action 2 Condition 3…

A: Solution

Q: It was decided to assess the awareness of common people about the political scenario in the country.…

A: Given: Total number of people in the survey = 1000 50% of them are educated and rest 50% are…

Q: 20. The table represents the results in which 200 people were asked their means of travel to work.…

A: The table shows the results in which 200 people were asked their means of travel to work.

Q: Which bias is possible when people volunteer to participate in your survey?     Self-selection…

A: In a self-selection bias people voluntary entered in the survey and affect the result of the study…

Q: The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to…

A: To find out how many individuals are described in this table, we need to sum up all the entries in…

Q: c. at least 1 but no more than 5 will malfunction. d. What is the expected number of sensors that…

A: given data p(malfunction )=p=0.10 n=12 x=No. of sensors malfunction p(x=X) = nxC px qn-x      -…

Q: Suppose you draw randomly from the students who answered this survey: Female Male Marion 84 Marian…

A:

Q: The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Suppose that 70% of people walking down a road are wearing a mask. If 10 people are selected…

A: Let X :  people walking down a road are wearing a mask X ~ Binomial ( n=10, p=0.70) And we have to…

Q: Which of the following could increase the risk of chance error?     Using a cross-sectional design…

A: The chance error is the difference between the actual value and the predicted value. It is the…

Q: Is a measure of the likelihood of some event ? a. Conditional Probabilities   b. Mean c. Statistics…

A: Solution The likelihood of the event is the chance of occurrence of that event.

Q: A researcher surveys 160 people that shown below. Do Not tik Totals Skateboards skateboards, ike 80…

A:

Q: The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades / to…

A: The given data is, Opinion Female Male Almost no chance 139 86 Some chance but probably not…

Q: Out of the Ten people playing in the Game Among Us, Mike claims that he will be chosen as the…

A: 1) Null hypothesis: H0: The proportion of Mike or Leo becoming an imposter or Crewmate is same.…

Q: To determine thế favorite type a. Ask shoppers that walk in the music store. h. Ask shoppers that…

A: It is asked to identify which sample is more likely to be random. Ask shoppers that walk in the…

Q: 12. A lecturer wanted to know the percentage of students who enjoy his lectures. A random sample of…

A: Given : Sample size of student (n) = 20 Let X : No. of students who enjoy lectures of a lecturer…

Q: b. Employee records for the Sentin indicate that 18% of employees are college graduates. The…

A: 18% of employees are college graduates.There are 5498 employees nationwide.Event A: The first…

Q: How many individuals are described in this table? How many females were among the respondents? The…

A: We have given that the National Longitudinal Study of Adolescent Health interviewed several thousand…

Q: 3) Given the two-way frequency table below, and one student is chosen, find the probabilities…

A: (a) The data of the survey is given in the problem. The probability of pizza is, Ppizza=Total number…

Q: How many individuals are described in this table? How many females were among the respondents?…

A: 1) The number of individuals described in the table are 4902. 2) Number of females in the…

Q: 9. If a family has three children, what is the probability that there are two boys and one girl (in…

A: Answer Correct option is 37.5%

Q: Suppose you are taking a multiple-choice test with c choices for each question. In answering a…

A: Given: The number of choices for each MCQ question is c. The probability of knowing the answer is p.…

Q: Ask 20 of your classmates about their favorite viand among the choices; ADOBO, SINIGANG and MENUDO.…

A:

Q: There is a 30% chance Ju Ren wears a purple shirt on any given day, and a 60% chance that she wear…

A: P(Purple shirt)=P(A)=30%=0.30P(wearing jeans)=P(B)=60%=0.60.

Q: 5. A multiple-choice test contains 25 questions, each with four answers. Assume a student just…

A:

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.