A questionnaire was given to students in an introductory statistics class during the first week of the course. One question​ asked, "How stressed have you been in the last 212 ​weeks, on a scale of 0 to​ 10, with 0 being not at all stressed and 10 being as stressed as​ possible?" The​ students' responses are shown in the frequency distribution below. How many students were involved in the​ study?

Q: Question: Consider a sample of 100 test scores, with the following frequency distribution: Score…

A: score frequency 60-69 15 70-79 25 80-89 30 90-99 25 100 5

Q: A marketing class of 50 students evaluated the instructor using the following scale: superior, good,…

A: Given information: A marketing class consists of n = 50 students. They evaluated the instructor…

Q: In 1955, Life Magazine reported that the 27 year-old mother of three worked, on average, an 75 hour…

A: Given Information :  In 1955, Life Magazine reported that the 27 year-old mother of three worked, on…

Q: Which branch of statistics deals with the organization? a. Inferential Statistics. b. Descriptive…

A: The correct answer is B. Descriptive statistics Let's see the difference between descriptive…

Q: The General Social Survey is an annual survey given to a random selection of about 1500 adults in…

A: The null and alternate hypothesis is a) The test statistics is The degrees of freedom is  The…

Q: Among fatal plane crashes that occurred during the past 55 years, 194 were due to pilot error, 82…

A: The relative frequency shows the proportion and percentage of observations falling in each class,…

Q: A recent survey of 2,000 Taylor Swift fans reported that the average fan paid $300 for concert…

A: Statistics can be divided into two principal areas: descriptive and inferential, each serving…

Q: In a sample of 500 parts produced by a grinding machine, 396 parts were defective. A test is…

A: given:   Sample size n = 500 Number of defective parts = x = 396

Q: Answer the questions below. (a) As part of the U.S. Census, the number of children is reported for…

A:

Q: Does it seem to you that people tend to be absent more on some days of the week than on others?…

A: Weekday f0 fE χ2=f0-fE2fE Monday 29 28 0.036 Tuesday 18 28 3.571 Wednesday 34 28 1.286…

Q: In a class of 50 students, the scores on a statistics exam are as follows: 10 students scored 80, 15…

A: From the provided information,Number of students = 5010 students scored 80, 15 students scored 70,…

Q: b. What is the margin of error for our 95% confidence interval? (Use the formula to compute it).…

A:

Q: A group of people was randomly selected and asked how many hours per day each person spends on…

A: To find: What percentage of the people surveyed spend 5 hours or more per day on social media?

Q: 4. What is the mean for the following scores? Scores: 1, 4, 13

A: We need to find the mean of the given scores  Scores: 1, 4, 13 we will use the formula for mean…

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.