Find the weighted average. Weighting: 50% Tests, 30% quizzes, 20% projects Scores are percents Tests Quizzes Projects 92 75 100 87 89 85 67 100 92.5 92 95 Weighted average: Check Answer

Q: 32 52 20 57 13 36 32 44 32 45 14 31 02 51 44 25 43 33 32 23

A:

Q: Ariana, a marine biologist, researched which countries had the most coral reefs. Coral reef area by…

A:

Q: After a school field trip, Ben surveyed some Complete the table. Preferred Animal at a Zoo Grade…

A: We need to add the values row wise and column wise to get the totals as shown below

Q: At Jeffrey's Swimwear, 50% of the 18 swimsuit styles are bikinis. How many bikini styles are there?…

A: Given  n=18, p=50%=0.50 Number of bikini=np

Q: Five friends went on a road trip and kept track of how long each of them spent driving. Road trip…

A:

Q: Your math test scores are 78,89,76,50,82 and 69 . The teacher says your average grade for the course…

A: We have given that the The data are 78,89,76,50,82 and 69

Q: The students in Emilio's grade voted to select a guest speaker. 35 students voted for a famous…

A: Given, Total number of students (N) = 500 Number of students who voted for a famous athlete  (n) =…

Q: find the weighted average. 3 test scores were 75, 5 test scores were 88 and 2 test scores were 90.

A: Given,3 test scores were 755 test scores were 882 test score were 90

Q: We have weight and height for 8 people, the data is given below: Weight (kg): 45, 52, 56, 62, 70,…

A: Here data is given for 8 people Weight in kg Height in cm and meter We have to calculate correlation…

Q: All freshmen at Roseville High School are required to play exactly one sport. The table below shows…

A: Solution

Q: Percentile: Practice Find the 5th , 50th and 100th percentile of the data 15, 20, 35, 40, 50 What is…

A: We have given that,  The data set is,  15 ,20, 35, 40, 50 Then,  We will find the 5th, 50th, 100th…

Q: 95 percent divided .025 what is the z score?

A: The z-score is obtained as given below: PZ≤z=0.025z=ϕ-10.025=-1.96  Using Standard normal table

Q: 3. Mandy earns money by delivering groceries. SIle $9 on Monday, $7 on Tuesday, $5 on Wednesday, $8…

A: According to the question : Monday earning = $9Tuesday earning = $7Wednesday earning = $5Thursady…

Q: 312 out of the 800 people at a real estate conference were women. What percentage of the people at…

A:

Q: The Scotia Metropolitah Area Rapid Transit Service operates six bus routes (A, B, C, D, E, and F)…

A: Instruction : "Need help on the last part"   Here we have been provided that number of buses , n =…

Q: A student scores in the 70th percentile on an exam. What does that mean? Choose the best answer.…

A: We know that the Percentile is used as a ranking of various students who take an exam. It means that…

Q: According to a polling organization, 22% of adults in a large region consider themselves to be…

A: Given, Test statistic value is 2.73. P-value is 0.003. Level of significance= 0.05 Null hypothesis:…

Q: Use the information provided here to answer the following questions. H0 : p 60, n 36, Xbar = 58.…

A: option (a) which is the information provided characterizes one smaple, one sided test is correct…

Q: Let A = {0, 2, 4, 6, 8, 10}, B = {0, 1, 2, 3, 4, 5, 6}, and C = { 4, 5, 6, 7, 8, 9, 10}. Find: %3D…

A: We will find out the required value.

Q: 14. The chart shows the number of each color of marble Kelly found when she opened a box of marbles.…

A:

Q: Solve the problem. 5) Michael gets test grades of 73, 77, 82, and 86. He gets a 93 on her final…

A: The test grades are 73, 77, 82, and 86 and the final exam grade is 93.

Q: Find the class ranking. (Round your answer to the nearest whole number.) 43rd percentile out of 32…

A:

Q: Use the values on the number line to find the sampling error. 3.6 38 for The sampling error is

A: We have to find sampling error.

Q: exam scores for 20 student are shown below, calculate the percentile for a student whose exam score…

A: Solution-: Given data: 53,53,58,62,62,65,66,68,68,70,71,75,78,79,80,84,89,94,94,96 The sample size…

Q: Find the overall score for the student with the following weighted system and average scores. Round…

A: The grades and corresponding weights are tabulated below:

Q: Can you calculate the grades. The green ones are the grades got on each exam.

A: To calculate the grades of the marks obtained in each exam that are represented by color green.…

Q: Find the mode, median, and mean of the set of scores. (If there is no mode, enter NONE.) 23, 45, 17,…

A: Set of Scores are given as : 23,45,17,20,34,20 We have to calculate Mean, Median and Mode.

Q: What does course median mean on a report card. My mark for the class I am taking is 80% and the…

A: Descriptive statistics

Q: Some players on a co-ed basketball team compared the total number of points they scored over the…

A: From the provided information, Total points score by players = 40 + 200 + 160 = 400 Tammy scored 200…

Q: What is the average? 3 4 5 8

A: To find the average we add the numbers first. Then divide by the total number of entries.  Total of…

Q: Find the mode: 27, 54, 6, 31, 57, 22, 19 Your answer Find the median: 23, 87, 19, 34, 37, 87,

A: Mode : In the given data, no observation occurs more than once.Hence the mode of the observations…

Q: dentify the type of data (qualitative/quantitative) and the level of measurement. The rating of your…

A: Quantitative Data: Data that represents quantities and is measurable. It deals with numbers and…

Q: Oakland Athletics 75 87 Philadelphia Phillies 66 96 Pittsburgh Pirates San Diego Padres 75 87 71 91…

A:

Q: Jonathan recently emptied his coin jar and counted the coins. Coin jar contents Silver coins Gold…

A: In the diagram above horizontal bar diagram is given. From the Horizontal Bar Diagram first let us…

Q: Results Real Estate had 6 home sales during the week: $150,000, $140,000, $240,000, $158,000,…

A:

Q: 2. Which area calculation is not needed to find the surface area of the rectangular pyramid below? 5…

A: To find the area of base

Q: iven the set of scores below, find the following: highest and lowest scores range size of the class…

A: Given that data 10, 9, 20, 7, 18, 40, 25, 18, 20, 23 , 4, 1, 49, 25, 33, 23, 19, 23, 47, 33,48, 44,…

Q: What percent of students preferred iced tea?

A: Total number of students = (840+390+830+510+430) = 3000 Number of students who preferred iced tea =…

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.