Twelve students were given remedial instruction in reading comprehension. Pretest and posttest were also administered, the results of which follow: Pretest Posttest 25 30 20 25 20 20 8. 12 15 20 8 8 15 20 8 8 20 20 21 20 35 38 20 30 Test at 0.05 level of significance to find out if there is significant difference between the ranking of the pretest and posttest results. Use 2 decimal places STATISTICS = TABULAR VALUE = COMPUTED VALUE

Q: Using the same data from the previous question, what are the range, sum of squares, sample variance,…

A: Range is the difference between Maximum and Minimum value.

Q: The following data set indicates the time taken (in minutes) for a sample of eleven employees of…

A: Arranging the data into ascending order: 13, 14, 16, 19, 19, 19, 19, 20, 21, 22, 24

Q: Here are yesterday's high temperatures (in Fahrenheit) in 11 U.S. cities. 46, 47, 62, 62, 64, 67,…

A: The objective of the question is to find the five-number summary and the interquartile range for the…

Q: third

A: Please refer to the image below

Q: Which measure of central tendency is most meaningful to describe the hair color of participants in…

A: Identify the correct measure of central tendency for the given situation.

Q: researcher wants to compare the number of vehicles owned by families in one location to the larger…

A: Given that  Population:mean number of vehicles: 3.7 Sample:mean number of vehicles: 4.1standard…

Q: What is the drawback of summarizing the data using the median

A: Median: Median is the middle value of the set of numbers. The set of numbers should be arranged in…

Q: Explain how can we find the corresponding z-score of an area and a percentile.

A:

Q: Use the following data set: 13, 8, 10, 7, 13, 9, 7, 11, 12, 10, 13 to answer questions The third…

A: From the provided information, The data values are as follow: 13, 8, 10, 7, 13, 9, 7, 11, 12, 10, 13

Q: Here are yesterday's high temperatures (in Fahrenheit) in 13 U.S. cities. 50, 55, 56, 58, 59, 60,…

A: Dear student,  If you find this solution helpful please upvote it. High temperatures in 13 U.S.…

Q: find 2nd quartile for given data 12,15,6,3,7,9,8,4,14,19,18,16,13,15,14,12,15,5

A:

Q: Calculate Median, Q1, Q3 and IQR, sample mean, sample variance, and sample standard deviation for…

A: Given: data 48, 92, 47, 44, 94, 18, 95, 67, 74, 64

Q: Quartiles Q3 > Median > Quartiles Q1. Select one: O True O False

A:

Q: Help with F- Statistic and P-Value please!

A: The mean for sample means is, The sum of square for treatments is, The sum of square for error is,…

Q: What is Percentile Rank of an Observation?

A: Percentiles: If the elements in the data set are arranged in ascending order of magnitude, then the…

Q: Describe and correct the error in finding the quartiles of the given data set: 23, 16, 12, 20, 19,…

A: The median is middle value of the observations, above or below which 50% of the observations lie.…

Q: Explain the importance of describing and comparing set of data in analyzing statistical…

A: Importance of comparing and describing a dataset.

Q: The following are the distances (in miles) to the nearest airport for 14 familles 9, 10, 11, 14, 14,…

A: Given data is9,10,11,14,14,21,26,26,33,35,39,41,42,44sample size(n)=14

Q: Explain how each portion of the ANOVA table is calculated, ultimately leading to the F statistic.

A:

Q: Notice that the temperatures are ordered from least to greatest. Give the five-number summary and…

A: It is given that the yesterday's high temperatures (in Fahrenheit) in 11 U.S. cities are 46, 47, 62,…

Q: Here are yesterday's high temperatures (in Fahrenheit) in 11 U.S. cities. 48, 49, 51, 53, 55, 65,…

A: Step 1:

Q: what are the first quartile median and third quartile of this data set? 19…

A: Observations in the ascending order are :16,17,19,24,28,30,31,32,36,37,40,43,45Here, n=13 is odd.M=…

Q: Convert the following data to z scores to determine who scored above, below, and at the mean in this…

A: The mean of the sample is obtained below:From the given information, 40 observations of samples were…

Q: The following are the distances (in miles) to the nearest airport for 12 families. 7, 9, 11, 15, 21,…

A: The objective of the question is to find the five-number summary and the interquartile range for the…

Q: The test scores of 16 students are listed below:             44, 46, 51, 57, 60, 63, 65, 70, 75, 76,…

A: We have the test score of 16 students i.e. 44, 46, 51, 57, 60, 63, 65, 70, 75, 76, 85, 87, 90, 94…

Q: find 5th quartile for given data  12,15,3,4,12,18,17,5,6,9,20,19,13,4,7,17

A: Solution  Its 50 th quartile not 5th quartile

Q: 98 crashes are tested and the severity of each head injury is measured on a scale of 0 to 1500.…

A: Given : Variable   N   Mean   StDev  Crash     98     611     182  Minimum   Q1   Median   Q3…

Q: find the median, 1 st quartile anf 3rd quartile for following sample data set…

A:

Q: Here are yesterday's high temperatures (in Fahrenheit) in 12 U.S. cities. 53, 55, 58, 61, 62, 71,…

A: Given,sample size(n)=12Arrange the given data in ascending order53, 55, 58, 61, 62, 71, 71, 73, 75,…

Q: The following are the distances (in miles) to the nearest airport for 13 families. 7, 14, 14, 15,…

A: To calculate the five-number summary and the interquartile range (IQR) for the given data set, we'll…

Q: Explain the Critical Z score.

A:

Q: Explain the importance of describing and comparing set of data in analyzing statistical…

A: Importance of comparing and describing a dataset.

Q: National park services, a bureau of the US government responsible for park management, is interested…

A: For current year: The mean can be obtained as: Thus, the mean is 74.56. Arranging the data set into…

Q: what is the second quartile

A: Second Quartile is the median of the data, xm. It is the 50th percentile of the data which is…

Q: 1. Construct a boxplot of the data and explain briefly why a sign test is appropriate to use in this…

A: Answer: For the given data, The boxplot is: By observing the boxplot, the data is skewed and has an…