On a certain exam, Tony corrected 10 papers and found the mean for his group to be 75. Alice corrected the remaining 20 papers and found that the mean for her group was 80. What is the mean of the combined group of students? (Round your answer to one decimal place.)

Q: Al gave correct answers to 47 of the 50 questions on the driving test . What percentage of the…

A: We can give the correct answer in the below st

Q: Hans has scored 75, 73, and 93 on his previous three tests. What score does he need on his next test…

A: Person H has scored 75, 73, and 93 on his last three tests.

Q: Stoaches are fictional creatures. Their natural habitats are high-altitude estuarine regions and…

A: Given : N = 100x = 49.96s = 10.92minimum value = 29Q1  = 44.93median = 50.18Q3 = 57.83maximum value…

Q: For the scores in the following table. what is the value of EX O 225 O 20 O 05

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

A:

Q: After 5 points are added to each score in a sample, the mean is found to be M=45 . What was the…

A: Given data: c = 5 points are added to each score in a sample. New mean, M = 45 Let the original mean…

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

A: # Given : The histogram represent the weight in pounds of member of certain high school programing…

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: According to College Board the scores on the AP History exam are normally distributed with N(72,…

A: It is given that the scores on the AP History exam are normally distributed with N(72, 7.5).

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: Steven ran the 100 meter dash in 13 seconds.  What is his T-score if the class mean was 14 seconds…

A: t statistic

Q: The histogram below gives the length of service of members of the Department of Biology at a…

A: Given data :  No of years  faculty  0 - 5 5 5 - 10 11 10 - 15 10 15 - 20 2 20 - 25 11…

Q: What is the mean for the combined set if both of the original samples have n = 4 scores? What is the…

A: Given that For sample 1, mean M1 = 8 For sample 2, mean M2 = 16

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

A:

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: You survey 100 people and find that 75 of them would prefer to work at home to some extent. When…

A: Given: You survey 100 people and find that 75 of them would prefer to work at home to some extent.…

Q: What percentage of students guessed between 41 and 44

A:

Q: A company gives the percentage of defective products as 6% or less. Use the sample below to…

A: Given: p0=0.06n=50x=5 The significance level is taken as 0.05.

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: 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: Jose has scored  79 ,  84 , and  85  on his previous three tests. What score does he need on…

A: Step 1:. The formula for average is:Average=Number of scoresSum of all scores​ Let's apply this…

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: Give an example of a set of 10 numbers for the following:  an average equal to the median.

A: The number of observations is 10.

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: Consider the following statement. The proportion of all students enrolled at a particular university…

A: Given: The data shows that the proportion of all students that were enrolled at a particular…

Q: Rafael has scored 81, 77, 60, 71, and 90 on his previous five tests. What score does he need on his…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.