Find the weighted mean of four test results, 65, 89, 105 and 101, where the first test counts 22%, the second 32%, the third counts 17 % and the fourth counts 29%.

Q: What is the mean for the following score 2,5,4,18

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Q: A population is normally distributed with µ = 86 and σ = 12. For this population, what is the 78th…

A: The population mean is 86 and population standard deviation is 12. The 78th percentile is, The…

Q: find the mean of 2,4,6,8 and 10

A: Given data is 2,4,6,8 and 10sample size(n)=5

Q: Find 25th and 40th percentile of data 2,5,7,810,12,15,17,19,24,28,32,34,36,38,40,42,44,47,49

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Q: What is the median score achieved by a student who recorded the following scores on 10 math quizzes?

A: What is the median score achieved by a student who recorded the following scores on 10 math…

Q: Find the raw score for 99% with a population mean of 29 and σ of 4

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Q: Gorge  gets 83 or 82  as his grades on his three main subjects Constrict a  sampling distribtuon of…

A: Gorge  gets 83 or 82  as his grades on his three main subjects

Q: find out the 89th percentile for given data  78,78,98,45,87,36,5,2,3,7,7

A: We have to find the 89th percentile for given data.  First  arrange the given data in ascending…

Q: Find the weighted mean of the number of sheets on a roll of toilet paper: 7 brands have 22 sheets on…

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Q: Find the geometric and harmonic mean of the data 256,46,45,554,356,37,895,38,753,965,35,854, 567

A: Geometric Mean :  The geometric mean is a measure of central tendency, but it is a type of a less…

Q: A bookstore found out that 23% of their customers buy a book, 34% of their customers buy two books,…

A: Given: Let X represents the number of books that customers buy. The random variable X can take…

Q: What is the percentile for Colorado, where 10.1% of the residents are aged 65 and olde

A: From the stem plot, we can see that only 4 of the 50 states (7.0%,8.8%,9.8% and 10.0%) having…

Q: A football kicker makes 70% of his field goals. If he attempts 20 field goals, determine the mean…

A: Determine the mean number of field goals made by football kicker. From the information, given that a…

Q: The scores of the sample of 11 senior high school students were recorded as follows: 70, 83, 74, 75,…

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Q: A grocery store has determined that in crates of tomatoes, 95% carry no rotten tomatoes, 2% carry…

A: Given: The probability that crates carry no rotten tomatoes is 0.95. The probability that crates…

Q: The mean of the following data is 70. Find x:  47,56,x,79,86

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Q: Find the location of Q1,Q3,D4, P35 of the data below : 21,28,15,13,12,13,25,17

A: Given data : 21 , 28 , 15 , 13 , 12 , 13 , 25 , 17

Q: The Bookstall Inc. is a specialty bookstore conc ardcover books are $3.50. Of the 50 books so What…

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Q: Find the weighted average of a data set where 10 has a weight of 2, 20 has a weight of three and 30…

A: The weighted average is defined as, where wi is the weight, and xi is the frequency corresponding…

Q: (c) Find the 20 th percentile of the sample mean.

A: (c) Given that, The 20th percentile of sample mean is,

Q: The winning scores in the U.S. Masters golf tournament in the years from 1982 to 1991 were as…

A: Data given  284,280,277,282,279,285,281,283,278,277

Q: The Taylors have recorded their weekly grocery expenses for the past 16 weeks and determined that…

A: Given The total number of weeks=16 Mean=$84.30 1 week's recorded expense is $48 but actual expense…

Q: find 4th percentilefor given data  12,25,32,6,42,16,18,19,15,23,24,28,29,45,6,23

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Q: The following are ages of the 10 people in the video arcade at 10 A.M. this morning 12, 8, 17, 6,…

A: Given observations are 12, 8, 17, 6, 11, 14, 8, 17, 10, 8. Mean of data is given by x¯=∑i=1nxin…

Q: Find the mode, median, and mean of the scores. (If there is no mode, enter NON 6.05, 5.01, 5.14,…

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Q: $88,000

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Q: Three hundred individuals were asked to view the picture quality of four different TVs and asked to…

A: a. Null Hypothesis: H0: The proportions of four groups are equal. Alternative Hypothesis: H1: The…

Q: Find the 20th percentile of the data 4 5 11346 2

A: Given data is 4,5,1,1,3,4,6,2sample size(n)=8

Q: find the mean if Z-score =14, st.Dev.=2.5, for a score of 8.5

A: Standard normal distribution:The standard normal distribution is a special case of normal…

Q: percentages:

A:

Q: Find the mean of the data set: 234, 228, 234, 229, 234, 278 О 278 O 239.5 О 234 O 231.5

A: Given ,6 Data are given 234,228,234,229,234,278 We need to calculate the mean of the given data.…

Q: What is the 87.7 percentile of X~N(12,3)

A: Answer: Given that, X~N(12,3)

Q: Find the mean of 4,6,8,10 and 12

A: The data set is: 4, 6, 8, 10 and 12 The formula to compute the mean is: Mean=Sum of…

Q: find 2 decile of the data  12,15,16,2,12,20,15,42,32,6,52,32,14,15,17,19,1,6

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Q: Find the mean of the quiz scores in the table to the right.

A: Given that:

Q: In the population, the mean SAT score is 1000. Would you be more likely (or equally likely) to get a…

A: Given that the population mean is 1,000 and the samples sizes selected are 10 and 30.

Q: Find 44th percentile, P44, from the following data

A: Given data, we need to arrange it in ascending order. P44=?

Q: If 10 out of 30 students got 22.5, 15 got 40 and 5 got 80 in an exam, which is the weighted average…

A: Given information: Total number of students n=30 The scores achieved by the respective number of…

Q: if the 90% Ci for the population mean is ( -2.58, 7.54) what is the sample mean

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Q: 7. Find the mean of a student's test scores if he earned 95, 93, 85, 90, and 91 points on five…

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Q: Katrina must take five exams in a math class. If her scores on the first four exams are 71, 69, 85,…

A: Given that Katrina scores on the first four exams are 71, 69, 85, and 83 and suppose she scores x…

Q: Part asked to find the sample correlation coefficient

A: Correlation: By correlation we mean the association or interdependence between two variables. If two…

Q: The mean weight of 15 wrestlers is 110 kgs. The mean weight of 5 of them is 100 kgs and another 5 is…

A: Given that, the mean weight of 15 wrestlers is 110 kgs. The mean weight of 5 of them is 100 kgs and…

Q: Q2. The 30% trimmed mean of the following data (120, 150, 170, 177, 178, 181, 198, 250, 450, 955)…

A: Trimmed Mean : Trimmed mean is the value calculated by omitting the specified % of largest values…

Q: Find the percentage of scores of the following

A: Given,μ=0s=1

Q: Kara has five exam scores of 6363, 5959, 6767, 7575, and 7373 in her biology class. What score does…

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.