1. Suppose that the following scores represent your grades on the first 5 tests: 68, 88, 68, 80, and 86. Find: = median = mode %3D %3D

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: For country C n=1024,p hat =0.45 For country D n =1078 ,p hat = 0.41

Q: Approximately 10% of students have a composite score below what level

A: If X is the composite score of the students, then we need to search for a x, such that P[X≤x]=0.1.

Q: If your grade for your AMDM class is computed the following way: Homework – 10% Quizzes – 10% Tests…

A: the given table is Homework 10% Quizzes 10% Tests 60% Final exam 20% .

Q: Q.1 Find median for the ages of seven preschool children. 1,3,4,2,3,5 and 1

A: The formula of median when n is odd is,   The median is,

Q: For a moderately skewed data, the arithmetic mean is 200, the coefficient of variation is 8 and Karl…

A:

Q: If there were drivers who drove 80 or 85 mph would the mean stay the same or get higher or lower?

A: The given frequency table is shown below: x f 85 2 80 3 75 15 70 20 65 50 60 45 55…

Q: During each six week grading period, the students in Mr.Welsh's math class are allowed to drop their…

A: We know, the measures like mean, variance, mean deviation are depends on all the data points.  Also…

Q: The following are the ages of 13 physics teachers in a school district.  24, 28, 29, 41, 41, 43,…

A: Lower quartile(Q1)=(n+1)4th termUpper quartile(Q3)=3(n+1)4th termSample size(n)=13and the given data…

Q: the mean = 146, and s =  35 Question #3 A percentage of female students with scores between 41 and…

A: From the provided information, Mean (x̅) = 146 Standard deviation (s) = 35

Q: Below are exam scores from a statistics class with 25 students: 100, 88, 90, 72, 76, 64, 68, 60, 78,…

A: From the provided information, Sample size (n) = 25 The number of students who scored above a 60 is…

Q: Calculate the median for the following the marks obtained by 9 students are given below: X; 45 32 37…

A: Here we need to find the median of the given data set, also there are 9 entries in the given data…

Q: If the following seven scores are ranked from smallest (#1) to largest, which rank should be…

A:

Q: One sample with n = 4 scores has a mean of M = 12, and a second sample with n = 6 scores has a mean…

A:

Q: The following are grades recorded for a Social Studies test: 81, 83, 83, 90, 36, 72, 78, 96, 85, 64,…

A: We can find the outlier as below.

Q: Anna is 3 years old and in the 42nd percentile for height in her age group. What does this mean?…

A: Given: 1)Anna is 3 years old and, 2) In the 42nd percentile for height in her age group. In the…

Q: Suppose that 50 measurements were taken and the mean was calculated to be 4.55.  Assume next that…

A: Solution: From the given information, mean of 50 measurements is 4.55.

Q: Given the following data: 86, 70, 73, 82, 79, 77, 69, 77, 87, 73, 66, 77 Less than what number is…

A: We can find the number which is less than the lower 70% of the data as below.

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: There are two independent samples which are Country B and Country C. We have to test whether the…

Q: B. Find the indicated decile. 75, 78, 73, 71, 59, 64, 74, 56, 61, 71, 59, 64, 75, 78, 73, 74, 56, 61…

A:

Q: If your grade for your AMDM class is computed the following way: Homework – 10% Quizzes – 10% Tests…

A:

Q: mean? 2. In a normally distributed set of data with µ = 14.7 and o = 3.4, is the score Y = 74…

A: Given : Population Mean,μ = 14.7 Population Standard Deviation,σ = 3.4

Q: What percentage of scores would be above 567?

A:

Q: If there were NO drivers who drove 80 or 85 mph would the mean stay the same, be lower,, or higher?

A: From the given information we find the probability.

Q: n Exton School, 60% of the boys play football and 36% of the boys play ice hockey. Given that 40% of…

A:

Q: Which of the following is a biased survey question about the rating of a book? Is this boring book…

A:

Q: The test scores for five students were 59, 60, 63, 76, and 87. How many points greater than the…

A: The mean is the average of all the values, or it is the sum of all the values divided by the number…

Q: If your grade for your AMDM class is computed the following way: Homework – 10% Quizzes – 10% Tests…

A:

Q: If your grade for your AMDM class is computed the following way: Homework – 10% Quizzes – 10% Tests…

A: Concept of Weighted Mean

Q: 2. The instructor claims that her student's mean score for the Final Term Examination is not lower…

A:

Q: What percentage of all possible observations of the variable lie between 1/4 and 5/8

A: Let us first assume that the total proportion is from 0 to 1. The proportion lying between 1/4 and…

Q: Given the mean of a certain data set as 155, what will be its new mean if all the data points were…

A: Remark: We know that, The mean (average) of a data set is found by adding all numbers in the data…

Q: One sample has a mean of M = 6 and a second sample has a mean of M = 12. The two samples are…

A: Given information- We have given means of two samples. M1 = 6 M2 = 12 We have to find the mean for…

Q: The Arizona Department of Transportation wishes to survey state residents to determine what…

A: Suppose p̂ is the sample proportion of the population, who would like to increase state-wide…

Q: If the mean depth Of a lake is 1.4m, it means that.........

A: it simply mean

Q: The following are the scores of 10 students in a Mathematics quiz. 16, 24, 38, 36, 24, 28, 30, 18,…

A: Mode of a given data : The value occurring most frequently in a set of observations is its mode. In…

Q: Find the mean of the following data. 19, 22, 20, 16, 25, 23, 17, 18 O None of these O 28 O 22 O 20

A:

Q: State the range and mean of the following. 1 The heights of 11 ten-year-old boys 137 cm, 150 cm, 140…

A: Reviewing information, Given, n=11 X : Heights of ten year-old boys…

Q: The following are the scores of 10 students in a 50-item quiz.   42, 38, 33, 46, 42, 40, 38, 36,…

A:

Q: The following are the scores of 10 students in a 50-item quiz.   42, 38, 33, 46, 42, 40, 38, 36,…

A: Given  Score of 10 students  Xi: 42, 38, 33, 46, 42, 40, 38, 36, 45,43 To find mean score of…

Q: Given the mean of a certain data set as 115, what will be its new mean if all the data points were…

A:

Q: how do you determine how many observations are in the first class of a stem and leaf chart

A: The objective is to infer the no. of observations (or frequencies) in the stem-and-left plot.

Q: It is bleieved that the percent of convicted felons who have a history of juvenile deliquency is…

A: Solution: State the hypotheses Null hypothesis: That is, the percent of convicted felons who have a…

Q: Suppose that 50 measurements were taken and the mean was calculated to be 4.55. Assume next that one…

A:

Q: A recent health survey 500 single young men yielded the following information: 385 were a member of…

A: Let, A= member of a sports club B= vegetarian S= total set of 500 people Let x people are members of…

Q: If you have the following observations: k, 5, 10, 15,25, then what is the possible value of the…

A: Note: " Since you have asked multiple questions, we will solve the first question for you. If you…

Q: Which of the following would be an unacceptable level for a Type 2 error in a study?     .80…

A: We have to choose Which of the following would be an unacceptable level for a Type 2 error in a…

Q: In a certain company, every worker was given a $900 raise. How does this affect the median of the…

A: Given information- We have given that in a certain company, every worker was given a $900 raise. We…

Q: If the following seven scores are ranked from smallest to largest, then what rank should be assigned…

A: Rank in Statistics: When data is ordered, numeric or ordinal values are replaced by their rank,…

Q: Q. 1. Calculate median from the following items : 5, 7, 9, 11, 13, 15, 17, 19, 21

A:

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.