A teacher wrote this list of values on the board and asked the students to identify the measures of center for the data. a+3 a+10 a+10

Q: The histogram to the right represents the weights (in pounds) of members of a certain high-school…

A:

Q: Sally just received her SAT results. Her SAT mathematics score was 600 and is in the 74th…

A: The score is 600 and it is the 74th percentile.

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: A pediatrician wants to determine the relation that may exist between a child's height and head…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: you scored 88,92,and 87 on three tests.Write and solve an equation to find the score you need on the…

A:

Q: elaine gets quiz grades of 77,85, and 66. she gets a 61 on her final exam. find the weighted mean if…

A: It is given that the quiz grades are 77, 85, and  66. The final grade is 61.

Q: Annette is surveying people in the city about their interest in a new shopping mall. She found that…

A: Introduction: The percentage is very significant in arithmetic. The base of the percentage…

Q: Q1 for data set:  41, 49, 55, 82, 84, 85, 93, 103, 113, 121, 126, 127, 136, 136, 155, 166, 169,…

A: The first or lower quartile (Q1) is a value below which 25% of the observations lies and above which…

Q: weight-loss program, and she had 15 individuals participating in the program. She weighed…

A:

Q: While at the local ice skating rink, Cora went around the rink 27 times total. She slipped and fell…

A: We can find the answer as below.

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: Keiko is recording the percentages she earned on each 81, 92, 78, 93, 81, 76, 90 Find the range of…

A: Range= high value - low value.

Q: 23% of the class was unhappy.  19 students were unhappy. How many students were in the class? Round…

A: To find the total students in the class .

Q: Find the number of different selections of 4 letters from the word STATISTICS.

A: "STATISTICS" No.of letters in the word " STATISTICS " =10

Q: Researchers tracked the 100 students to see how far they would get in their educational attainment.…

A:

Q: Find the mean of weight of cranes in kg. The weight of 6 cranes are 25, 10, 40, 45, 9, 21 in kg.

A: The weights of the cranes are given as 25 kg, 10 kg, 40 kg, 45 kg, 9 kg, 21 kg. These are the data…

Q: Find the percentile for the data value. Data set: 3, 11, 7, 22, 3, 23, 13; data value: 7

A: Data set is 3, 11, 7, 22, 3, 23, 13

Q: You did a survey of students on campus to see if they used the light rail or not. 41 student said…

A: percentage problem

Q: 55% of high

A: Probability of participating = 0.55 Probability of playing in NCAA given participating = 0.05

Q: In Music, Linda scored 70%, and her score was at the 85th percentile.  In Art, Linda scored 95%,…

A: It is given that the stated person's scores (in percentage) in Music and Art are 70% and 95%…

Q: Int the following table, the median value would be: 1 2 3 4 35 1579 2468 56

A: convert stem-leaf plot to raw data, 13, 15, 21, 25, 27, 29, 32, 34, 36, 38, 45, 46 sample size,…

Q: The table shows number of minutes Anna spent reading. Anna wants to record the greater measure of…

A: The objective of this question is to determine whether the mean or the median of the given data set…

Q: student wants to know his average homework grade for the first half of his math class. There were 7…

A: Given data, 100,90,95,89,92,85,95 What is the population mean of his homework grades?

Q: A recent year was randomly picked from 1985 to the present. In that year, there were 2,052 Hispanic…

A: Public university:Sample size Number of Hispanic students Community college:Sample size Number of…

Q: Construct a pie chart for the data. Label each category with its percentage. Scott Tarnowski owns a…

A: Step 1:  Step 2: Step 3: Step 4:

Q: Calculate a student's grades used weighted average follows. The second test was the midterm, it is…

A:

Q: A survey was conducted by a website on which online music channels subscribers use on a regular…

A: 11 listened to rap, heavy metal, and alternative rock. 18 listened to rap and heavy metal. 20…

Q: Johannah is having  a reading contest with her friend Morgan.Johannah reads 2/5 of her  book,while…

A: To compare two fractions , first we have to convert to fractions to such a form that the denominator…

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

A:

Q: A pediatrician wants to determine the relation that may exist between a child's height and head…

A: In multiple linear regression, there will be more than one independent variable. In simple linear…

Q: At a school several teachers were holding a contest to see which class could earn the most trivia…

A: Given in  a school several teachers were holding a contest to see which class could earn the most…

Q: Find the original data from the stem-and-leaf plot.  Stem leaves  76 358 77 348 78 18

A: We have to convert stem leave plot in original data.

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.