Provide an appropriate response. A quiz consists of 20 multiple choice questions, each with five possible answers, only one of which is correct. If a student guesses on each question, what is the mean and standard deviation of the number of correct answers? A) mean: 4; standard deviation: 2 B) mean: 4; standard deviation: 1.78885438 mean: 10; standard deviation: 1.78885438 D) mean: 10; standard deviation: 3.16227766

Q: The mean value of land and buildings per acre from a sample of farms is $1500, with a standard…

A: The mean is 1500 and the standard deviation is 300.

Q: The mean of a population is 40 and its standard deviation is 3. What are the values ​​of the mean…

A: Given that  Mean=E(X)=40 Standard deviation=Std(X)=3 Variance=Var(X)=32=9

Q: What

A: Explanation and solutions is given below....

Q: Blood sugars from eight patients in a rural clinic were recorded last summer by the local physician.…

A: Given blood sugar results are120,145,200,250,79,100,894,255sample size(n)=8

Q: c) How many of the 15 data values fall within one standard deviation of the mean? Show how you found…

A: According to empirical rule, 68% of the data lie within 1 standard deviation of the mean.  Thus, if…

Q: With the aid of a table, find the sample Standard Deviation of the following dataset: X = {2.2, 4.7,…

A:

Q: Use any method to calculate the sample mean, median, and standard deviation of the following sample…

A: The objective is to find the sample mean, median and standard deviation of the given sample of…

Q: A state administered standardized reading is given to eighth grade students. The scores for all…

A: Mean(μ)=517 Standard deviation(σ)=63

Q: Calculate the mean, standard deviation, and variance for the following five scores: 9, 4, 7, 1, 4.

A: Considering the scores as population. The population mean is, μ=∑XN=9+4+7+1+45=255=5 Thus, the…

Q: Calculate the mean, median and standard deviation of these six numbers: 4, 2, 8, 3, 12, 9

A: Given,4, 2, 8, 3, 12, 9sample size(n)=6

Q: Calculate the mean, standard deviation, and variance for the following five scores: 9,4,7,1,4.

A:

Q: A distribution consists of three requencies 250, 300, 350 having neans 30, 15 and 20 and standard…

A: We have given that  Size N1=250 , N2=300, N3=350 Sample mean xbar1 =30 , x2=15 , x3=20 Standard…

Q: Find the mean and standard deviation for the following:…

A: a)Mean: The Mean is 1.41

Q: For the set of scores 5,10,10,15,25 calulate the mean, median,mode,range variance, and standard…

A: We have given that data  5,10,10,15,25 Mean = sum of all observations/total number of observations…

Q: Find the standard  deviation of 1.2, 2.7, 5.3, 3.4, 4.1, 4.6, 3.3, 2.7,  3.3, 2.6

A: Here we have to find, The standard  deviation of 1.2, 2.7, 5.3, 3.4, 4.1, 4.6, 3.3, 2.7,  3.3, 2.6.…

Q: The average daily points for my fantasy baseball team are {4.1, 5.7, 3.8, 4.7, 4.7, 5.5, 4.1, 2.7,…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest…

A: a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: Compute the mean, median, Variance, and the standard deviation for the data below: 3,2 ,3, 4, 3…

A:

Q: What is the mode of the data?  d. What is the standard deviation of the data?

A: Given Frequency table, Class Interval Frequency Relative Frequency 1 to 5 3 3 6 to 10 4 7…

Q: 1. Find the mean, the variance and the standard deviation for the data. {18, 18, 19, 18, 18, 25, 29,…

A: Given data is : 18,18,19,18,18,25,29,30,26,19 To find mean, standard deviation, and variance.

Q: give the sample standard deviation of this data set: 20, 25, 35, 40

A: Sample Standard deviation:   If the standard deviation is calculated for sample then it is called as…

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

A:

Q: What is the Mean deviation of the numbers 0.5, 0.8, 1.1, 0.9 and 0.6

A: The data is given by 0.5, 0.8, 1.1, 0.9, 0.6 And the mean of these numbers is Mean = (0.5 + 0.8 +…

Q: The mean deviation of the data(1 * :2,9,9,3,6,9,4 from the mean is 2.23 3.23 O 2.57 O 3.57 O

A:

Q: Allegiant Airlines charges a mean base fare of $89. In addition, the airline charges for making a…

A: Given that: Mean base fare = $89 Additional Charges = $35 Sample size,  n = 50 Population standard…

Q: What is the formula for calculating the standard deviation of a set of n observations?

A: Introduction The standard deviation is one of the measures of variability.

Q: c. Analyzing marks of 15 students from Spring 2020, you found their mean to be 23.6 and standard…

A: Data given Summer 2020  23,18,17,24,27,18,14,29  Spring 2020  n=15, x̄=23.6, s=4.9

Q: display of data to find the standar

A: Given,

Q: what does the mean and the standard deviation represent in data set? how would i interpret the…

A: Mean and standard deviation in data set:The mean represent the average value in a data set. In other…

Q: Given the set of data: (77, X. 75, 79, 79, X, 76, 75, X, 76}. If the unknown data X is the mode and…

A:

Q: Use a formula to find the standard deviation of the sample 1, 4, 5, 6.

A: We have given that,  The data set of the sample is,  1, 4, 5, 6 Then,  We will find the standard…

Q: Give the mean and the standard deviation of the distribution of means for mean=100; Variance=100;…

A:

Q: Newborn babies: A study conducted by the Center for Population Economics at the University of…

A: Z = (x - u) /s u = mean = 3492 s = standard deviation = 872

Q: the grouped data?

A:

Q: You conduct a survey and receive the following scores from your participants: 7, 4, 1, 2, 5, 4, 5,…

A: As per company guidelines I solved exactly three subparts of the question . thank you

Q: How would you find the standard deviation by hand, of the following numbers: 1,1,3,01,6,2

A: Standard deviation:Standard deviation quantifies the dispersion of a data set from its mean. The…

Q: The number of patients coming into a dental clinic each day were 74, 52, and 83. a. Find the sample…

A: Given: The data of the number of patients coming into a dental clinic each day is given as:…

Q: Consider the data:  10, 7, 9, 13, 11, 13, 14.  (Show your work.) a)Determine the mean.…

A:

Q: What percentage of computer programmer major received a starting offer between $32000 and $38000?…

A: The following information has been provided: \mu = 39269, \text{ } \sigma = 2550Mean : μ=39269,…

Q: The Sum of Squared Errors for a data set of 18 numbers is 64. What is the standard deviation?

A: Given thatThe sum of squared errors of data set (SS) = 64Number of data values in data set (n) =…