20 randomly selected students were asked the number of movies they watched the previous week. The results are as follows: # of Movies 0 1 2 3 4 5 Frequency 3 1 4 6 2 4 Round all your answers to 4 decimal places where possible. What percent of the respondents watched at least 4 movies the previous week? % 80% of all respondents watched fewer than how many movies the previous week?

Q: A statistics professor made the following histogram for the scores on her class’s first exam.   If…

A: From the Histogram, the scores and the corresponding frequencies are, Given that the passing score…

Q: 55 randomly selected students were asked the number of pairs of shoes they have. Let X represent the…

A: We have given that Number of pairs of shoes  Frequency  4 3 5 8 6 5 7 6 8 2 9 3 10…

Q: The chart below shows the grade distribution on a quiz in one of my classes. If there are 34…

A: Solution: The objective is to find the number of students who scored A grade

Q: A cell phone manufacturer makes cell phones, where 8 out of 6 are defective. What is the frequency…

A:

Q: 50 part-time students were asked how many courses they were taking this term. The (incomplete)…

A: From the given information, # of courses Frequency Relative Frequency=frequency/Total frequency…

Q: number summary is 0.53, 0.74, 1.19, 1.355, and 1.4

A: The five-number summary consists of the following statistics: Minimum, Lower quartile, Median, Upper…

Q: In a national survey college students were​ asked, "How often do you wear a seat belt when riding in…

A: The objective of the question is to understand the frequency distribution of the responses to the…

Q: 1. 180 part-time students were asked how many courses they were taking this term. The (incomplete)…

A: Given , Total number of students 180.

Q: 60 randomly selected students were asked the number of pairs of shoes they have. Let X represent the…

A:

Q: Students were asked how many minutes did they spend studying for Test 1. The following histogram…

A: Given:

Q: What is d2; i.e., the difference for the 2nd family?  USE 1 DECIMAL PLACE.   QUESTION 13 The mean…

A: Test is that whether the sons are taller tham their fathers. It is given that Sample size n = 8 Mean…

Q: A study explores weight changes in high school students during the pandemic. Let X = change in…

A: “Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Q: College students were given three choices of pizza toppings and asked to choose one favorite. The…

A: It is given asThe total number of students = 259No. of junior students = 67No. of students having…

Q: Every year, the students at a school are given a musical aptitude test that rates them from 0 (no…

A:

Q: sample proportion is p= und to three decimal places as needed.)

A: Given Number of sample of teenagers between 13 to 17 year of ages(n)=280

Q: Every year, the students at a school are given a musical aptitude test that rates them from 0 (no…

A: Average: Given information: x f x*f 0 1 0 1 3 3 2 5 10 3 0 0 4 4 16 5 3 15     44…

Q: Calculate the coefficient of determination, r2r2. Round your answer to three decimal places.

A: First we insert the given dataset in R studio as,

Q: Calcium is essential to tree growth because it promotes the formation of wood and maintains cell…

A: c) Decision Rule: If the confidence interval contains the true population mean value, then do not…

Q: Use the following information to answer the next five exercises. A doctor wants to know if a blood…

A: The question is based on a hypo. testing of a paired data set Given :

Q: ep 5 of 5: Find the percentage of students that scored higher than 80.5. Round your answer to the…

A: Given:  Histogram of score with corresponding frequency Score:     70.5-75.5, 75.5-80.5, 80.5-85.5,…

Q: In a group of 17 students, the score of 1, 2, 3, and 4 were given from the judges in a competition.…

A:

Q: 50 part-time students were asked how many courses they were taking this term. The (incomplete)…

A: We have to complete table of frequency relative frequency and cumulative frequency and also have to…

Q: number of hours per week that the television is turned on is determined for each family in a sample.…

A: Given that  Mean = 30 Median = 26.2

Q: A sample consists of n = 16 scores. How many of the scores are used to calculate the range? Question…

A: From the provided information,Sample size (n) = 16

Q: Forty randomly selected people were asked the number of people living in their home. Let X = the…

A: Relative frequency = frequency/total no. of people Total  no . of people = 40

Q: Please view the following attached image and answer the multiple choice question

A: We have given the recorded results of a computer class. We have to find Sxx   We know that-

Q: A guidance counselor is interested in how student motivation changes across time. She gives sixteen…

A: The objective of the question is to identify the appropriate statistical test to analyze the change…

Q: Examine the image below and then answer all parts of the question under it. Enter your answers as…

A: a) There are 4 yellow objects in 10 objects.So, P(yellow)=410=0.4b) There are 3 hearts in the 10…

Q: 60 students were surveyed about how many nights in a week they work on homework problems in their…

A: The value of mean number of days of homework is,

Q: Age Group # of People Avg. # of Colds 250 2.2 945 1.5 1-10 11-17 785 1.1 17-64 3,456 0.4 64+ 195 3.1

A: Measures of Central Tendency: A measure of central tendency represents the central value or typical…

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.