After conducting a survey of his classmates Ryan discovers the amount of money everyone spends on clothes each month has a mean of 46.00 what does the amount of his classmates spend on clothes.

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: Kari wants to do an experiment to see if class level (freshman, sophomore, etc.) affects total…

A: An experiment can be repeated multiple times and it has well-defined possible outcomes.

Q: In 2016 the Better Business Bureau settled 77% of complaints they received in the United States.…

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

Q: If you have the following data set {70, 72, 67, 78, 70} and you add 85 to the data set, how much…

A: the following data set {70, 72, 67, 78, 70} and you add 85 to the data set,

Q: If a population has a mean of 25, what is the mean of the sampling distribution of its mean. Please…

A: Given,population mean(μ)=25

Q: tests, a term paper, and a final examination. Each test counts as 15% of the course grade. The term…

A:

Q: 00 subjects were studied and 120 of them expressed a preference for brand x, what percentage…

A: The 200 subjects were studied; n=200 120 of them expressed a preference for brand x; x=120

Q: A consumer group surveyed 146 airplane travelers after a flight and found that 132 of them would fly…

A:

Q: The average (mean) score on an exam was 76.375 in a class consisting of 21 Administration students…

A: From the provided information, The average score on an exam was 76.375 consisting 21 Administration…

Q: Alex is 80th in his class of 320 students. What is his percentile rank in class?

A: Data given p=80, n=320

Q: Martha Quinn is interested in the proportion of fast to slow songs she will play today.  She takes…

A: In this method of selection, each song have equal probability of getting selected and the selection…

Q: Yesterday Al recorded 5 data values, and the mean of those values was 90. Today he realized the data…

A: Given dataMean of 5 data values = 90Data value 80 was actually 50Mean is given by

Q: After six biology tests, Ruben has a mean score of 76. What score does Ruben need on the next test…

A: After 6 biology tests :  Mean = 76  After next test : ( biology test will be 7 now )  Mean =78…

Q: Find the mean (average) for the following set of numbers: x=11,5,13,2,7,5,7,16,14,6

A: We have given that the set of numbers : x = 11, 5, 13, 2, 7, 5, 7, 16, 14, 6   Mean ( Average ):  It…

Q: The mean of 14 numbers is 49. Removing one of the numbers causes the mean to decrease to 43. What…

A: given data:mean =49n=14 Removing one of the numbers causes the mean to decrease to 43new total…

Q: The mean of 12 numbers is 48. Removing one of the numbers causes the mean to decrease to 45. What…

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

Q: What percentage of students guessed between 41 and 44

A:

Q: When 450 junior college students were surveyed, 125 said that they have previously owned a…

A: sample size(n)=450 No. of students said that they have previously owned a motorcycle(x)=125

Q: A professor grades students on four tests, a term paper, and a final examination. Each test counts…

A:

Q: The 20th percentile is how many inches?

A: The mean is 64 inches and the standard deviation is 2.5 inches.

Q: (d) What is the nonresponse rate? (e) Suggest some methods that could be used in a future survey to…

A: The purpose of a survey is to examine the opinions, behaviors, or experiences of individuals or…

Q: Find the mean (average) for the following set of numbers: x=10,24,29,19,17,1,6,14,8,6

A: From the given information we want to find the mean of the given data.

Q: A professor grades students on three tests, four quizzes, and a final examination. Each test counts…

A: It is given that Sara has test scores of 95, 70, and 86, quiz scores are 91, 66, 76, 85 and her…

Q: Willie has an average (mean) of 83.2 on the first five exams. What is the least he can score in…

A: Need to find out least that the student can score in order to have an average of 85.

Q: Allie has 5 exam scores 98, 94, 84, 95 and 95 in math class. What score does she need on the final…

A: According to questionAllie has 5 exam scores 98, 94,84,95 and 95 in math classWe have to calculate…

Q: Ten HR majors had an average grade of 94 on an exam. Fourteen business majors averaged 86, while six…

A: Given problem Given that   Ten HR majors had an average grade of 94 on an exam. Fourteen business…

Q: Joey took a survey of his classmates' food preferences and recorded them in the table below.…

A: Relative frequency

Q: There were 34 females that weighed over 250 pounds. What percent of females aged 20 to 29 weighed…

A: Given data,  N~(161.61,48.95)  i.e., μ=161.61σ=48.95   If n=34 P(X>250)=?

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.