A student scored 75% in a quiz worth 75 points, 85% in a quiz worth 50 points, and 80% in a quiz worth 30 points. What was the student's weighted mean score (in percentage)? Group of answers: 79.2 81.8 78.1 80.0

Q: Of the mean, median, and mode, which is the only one appropriate for use with qualitative data?

A: The mean, median and mode are the three most commonly used measure of centre.The, mean of the data…

Q: E. What is the interquartile range for employee scores?

A: The interquartile range is from first quartile to third quartile.

Q: How smart is your phone? A random sample of 10 Samsung Galaxy smartphones being sold over the…

A: We have given that,  The data set is,  199, 169, 385, 329, 269, 149, 135, 249, 299, 249 standard…

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: In June, an investor purchased 300 shares of Oracle (an information technology company) stock at $53…

A:

Q: When the Standard Score = -1, what is the percentile of the raw score? %3D O 2nd 14th O 16th 34th…

A: It is an important part of statistics. It is widely used.

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: 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: (d) What is the percentile rank of a bag that contains 1425 chocolate chips?

A: We want the find the percentile rank

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

A:

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

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

Q: The sample mean is the point estimator of 18

A:

Q: Find the 54th percentile, P54, from the following data

A: Given: Number of samples (n) =39 Formula: Note: If "L" is a whole number then the value of the…

Q: Calculate the mean, median, and mode numbers of hours her friends spent on Facebook. Does the mean…

A: First we have to sort the data in ascending order as 2,2,2,2,3,3,3,9

Q: What is the z-score corresponding to the 74th percentile

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

Q: The 50th percentile for the following data is 65, 70, 67, 75, 89, 80

A: From the given information, The data values are 65, 70, 67, 75, 89 and 80. Arrange the data in…

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: What statistic would you use if you wanted to see if there was a difference between three ethnic…

A: What statistic would you use if you wanted to see if there was a difference between three ethnic…

Q: what is the z score for the 44th percentile

A: Obtain the z score for the 44th percentile. The z score for the 44th percentile is obtained below as…

Q: A class of 5 students averaged 70% on a given test. A class of 9 students averaged 80% on the same…

A: Introduction: Suppose there are k groups numbered 1, 2, 3, …, k – 1, and k.

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: 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: What is the mode for the following distribution of scores: Eye colour        Frequency b) Blue…

A: The category having highest frequency is defined as mode. from the four distribution Brown Eye color…

Q: Does the sample size have an effect on the mean of all possible sample means? Explain your answer.

A:

Q: in the highest 2.5 percent eat?  What is the z-score

A: Given that 2.5% of the highest area present in the data. That is, P(Z>z)=2.5%=0.025…

Q: In June, an investor purchased 3000 shares of Oracle (an information technology company) stock at…

A: Let, X be the share price of Oracle. X1=$53X2=$42X3=$45 Let, w be the number of shares.…

Q: Given the data set: 194,219,93,299,191, calculate the deviation score associated with 93. Enter your…

A: The mean is calculated as follows: μ=∑xN  =194+219+93+299+1915  =199.2 The mean is 199.2.

Q: What is the mean height of the students in the group? 1-47 inches 2-49 inches 3-51 inches 4-53…

A:

Q: recent survey by the U.S. Census Bureau determined that the median monthly housing rent was $640. If…

A: Given that  Median=640 First Quartile=496

Q: percentages:

A:

Q: Find the mean, median, mode of the scores of 40 students in a 50 item test. Complete the table

A: Complete table :- CLASS INTERVAL MIDPOINT(XI) FREQUENCY (fi) fixi cumfi(F) 15-19 17 3 51 3…

Q: Given a bag with 13 red marbles, and 42 blue marbles, what is the probability of pulling two…

A: There are 13 red marbles and 42 blue marbles.

Q: What well-being score represents the 45 percentile? *

A: It is given that the mean is 100 and the standard deviation is 20.

Q: In June, an investor purchased 300 shares of Oracle (an information technology company) stock at $41…

A: Given :

Q: Q5: b) For a dataset that has a symmetrical distribution, compare the mean and the median.

A: We have to compare the mean and median for the dataset that has a symmetrical distribution.

Q: find 2nd percentile for given data 12,15,4,69,85,63,34,75,62,69,74,52,16,46,42

A: We have given that data  12,15,4,69,85,63,34,75,62,69,74,52,16,46,42 I want to find 2nd percentile.

Q: given the data on the table below, solve for the weighted mean

A: Given information: The given weighted data is as follows: Observation Class Weights 1 1-3 4 2…

Q: 2. Adidas sold 120 running shoes for a regular price of P5,000. For summer sale the shoes were…

A: Given,The price of 120 running shoes=P5,000The price of 145 running shoes=P4500The price of 35…

Q: Q3/ What is the test score corresponds to the 33rd percentile for the following data: 15, 12, 5, 16,…

A:

Q: Which of the following z-score values represents the location closest to the mean? Group of answer…

A: Formula for z-score: z=x-μσ where  μis the mean of normal distribution σ is the standard deviation…

Q: The cighth grade girls' basketball team played a total of 13 games this season. If they scored a…

A:

Q: A professional baseball team is analyzing the top five batting averages. What is the mean of the…

A:

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: 5. Given an example where you measured the height of 10 of your classmates and computed a mean of 70…

A: Note:Hey there! Thank you for posting the question. Since population mean is not given, we are…

Q: When the Standard Score = -2, what is the percentile of the raw score? O 2nd O 14th 16th 34th 84th

A: Given that, Standard score = -2

Q: 4. What is the mean for the following scores? Scores: 1, 4, 13

A: We need to find the mean of the given scores  Scores: 1, 4, 13 we will use the formula for mean…

Q: Calculate the 70th percentile of the data set shown

A: Given n=10 x 4.4 8.8 10.3 12 20.9 26.8 28 28.4 29.2 30

Q: Bill received the following scores on his quizzes 54, 67, 78, 73, 92, 86, 78, 79, 81, 72 what is…

A: Use EXCEL Procedure to obtain the values of mean, range, Standard deviation, mode, median and…