The scores of five students in an English class following if x represents a score.

Q: If x + y = 0 and x # 0, then what is the value of x 2007 y 2007 O -1 O 2 O 1

A:

Q: Suppose X ~ N (-2,3). Between what c values does 99.73% of the data lie?

A: The mean is -2 and the standard deviation is 3.

Q: What type of relationship is indicated in the scatterplot7

A:

Q: In this data set you will be working with three pairs of variables: pair 1: x1 and y1 pair 2: x2 and…

A: Given, A table containing sd and mean of the variables x1, x2, x3, y1, y2, y3 as below:   mean…

Q: 3. Each of three friends flips a coin 36 times. Angel records "tails" 20 times. Michael records…

A: Given each of three friends flip a coin 36 times.

Q: The degrees of freedom are directly related to

A: Let, X1,X2,...,Xn be the samples from normal distribution. Let, S2 be the sample variance.  We know…

Q: The level of significance can be any positive value. Select one: True False

A: The significance level is a positive value. The significance level range is inclusive from zero to…

Q: If the score of 3 courses for a student who studied at a university are 81, 62, 74 with credit hours…

A:

Q: following s

A: we have to tell which of the following set spans R3 amongst the given options.

Q: If the mean of the values 50, x, 55, 35, 15, 25 is 40, then the value of x must be......

A: Given : The mean of the values : 50, x, 55, 35, 15, 25 is 40. We have to find the value of x.

Q: QUESTION 6 4c) For the following scores, find the mode 43, 32, .64, 21, 29, 51, .89, .64

A: Given data, 0.43 0.32 0.64 0.21 0.29 0.51 0.89 0.64.

Q: Use the diagram at the right for Questions 7-10, 7. If /1 /2, then 8. If /3 L4, then 9. If 25 6,…

A: From the picture we see that: If ∠1≅∠2, then ∠KXY≅∠KYX

Q: What is the relationship between q and p?

A: Given that -

Q: If your score on your next statistics test is converted to a z score, which of these z scores would…

A: Given that  The Z-score are -2.50, -1.50, 0, 1.00, 2.25

Q: The table shows the number of absences, x, in a class and the final exam grade, y, for seven…

A: Given n=7 x=5

Q: If X-B(7,0.2), the mean is

A: Formula : Mean = np

Q: Which of the following is a categorical variable ?  -temperature -zip code - number of pets in a…

A: Explanation: Two major types of variable 1- Quantitative variable 2- Categorical variable…

Q: A data set contains 6 observations. If x¯ = 83.3 for the data set, what is ∑xi?   ∑xi =

A: Given: A data set contains 6 observations. If x¯ = 83.3 for the data set, we have to find the value…

Q: An elementary school is looking into whether there is a relationship between if a student attended…

A: The examining the relationship between two variables (explanatory and response variable) are of four…

Q: If the values of the variable X are 2, 3, 4, 5 and P(X=x) 0.20, 0.30, 0.20 and 0.30, respectively,…

A: Given data, X P(X=x) 2 0.20 3 0.30 4 0.20 5 0.30   Variance(X)=?

Q: If the mean of an even number of consecutive integers is 0.5, what is the sum of the two middle…

A: Given The average of an number of consecutive integers is 0.5. We know that that The average of an…

Q: Let us measure the degree of relationship between the sex and scores of 20 students. Let Male = 0…

A: Given information: The data represents the scores of 20 students. Among the 20 students some are…

Q: Suppose X ∼N (-4,1. Between what xx values does 99.72% of the data lie?

A: Given: X ∼N (-4,1 ) To find: Between what xx values does 99.72% of the data lie?

Q: For a population with  = 80 and  = 9, find the z-score for each of the following X values. (Note:…

A: It is given that the mean is 80 and the standard deviation is 9.

Q: ɪꜰ ᴛʜᴇ ʀᴀᴅɪᴜꜱ ᴏꜰ ᴀ ᴄɪʀᴄʟᴇ ɪꜱ ᴅᴏᴜʙʟᴇᴅ, ʜᴏᴡ ɪꜱ ᴛʜᴇ ʟᴇɴɢᴛʜ ᴏꜰ ᴛʜᴇ ᴀʀᴄ ɪɴᴛᴇʀᴄᴇᴘᴛᴇᴅ ʙʏ ᴀ ꜰɪxᴇᴅ ᴄᴇɴᴛʀᴀʟ…

A:

Q: Given x = 0, 1, 2, 3, 4, 5 how is the mean 1.5? Shouldn't the mean of x be 2.5?

A: Measures of Central Tendency: A measure of central tendency represents the central value or typical…

Q: Which of the following options are correct?

A: Given information: The information about LDA is given.

Q: Tell each of the following situations whether it requires descriptive or inferential statistics. 5.…

A: Tell each of the following situations, whether it requires descriptive or inferential statistics.…

Q: If there were 500 students in Jamal’s class, approximately how many students scored higher than…

A:

Q: Match the statement on the left with the most likely answer on the right. Each answer is used one…

A: If the number of hours work is increased then amount paycheck is also likely to increase. Therefore…

Q: Do students perform worse when they take an exam alone than when they take an exam in a classroom…

A: There are two independent samples which are Alone and Classroom. Both samples come from population…

Q: Suppose the mean of Z is 2. What is the mean of Y if a = 1.22 and Y=aZ?  (Use two decimal places,…

A: Suppose the mean of Z is 2. What is the mean of Y if a = 1.22 and Y=aZ? (Use two decimal places, ex:…

Q: IF the mean of the values 50, X, 55, 35, 15, 25 is 40, then the value of x must be........

A: From the provided information, The mean of the data set is 40. The data values are 50, x, 55, 35,…

Q: Which option is correct?

A:

Q: is b correct?

A: Given:fx=32x Then,Fx=∫0xfxdx=∫0x32xdx=32∫0xx12dx=32x32320x=x32   Therefore, the cumulative…

Q: the five observations are 1, 2 and 6, fing tbe gther two.

A:

Q: What would be the frequency of the class 35 up to 45, that is {x; 35 ≤ x < 45}

A: Given that Stem part contains 10s digit And leaf part contains 1s digit i.e For example, 3|5 = 35

Q: which

A:

Q: Explain why the relative frequency column of a frequency table might not sum to 1.0.

A:

Q: *NOT A GRADED QUESTION*

A: Given information: The transition matrix of a Markov chain is as given below:

Q: the marks obtained by two students A and B

A: Here The Marks of two students are Given, if consistency is the criteria of the Award then which…

Q: reseacher desires to know if the age of a child is related to the number of cavities he or she has.

A: Here, Researcher want to know : Realtion for age of a child and number of cavities. It can be…

Q: If the mean of five observations x, x+2, x+4, x+6, x+8 is 11, find the mean of first three…

A:

Q: What is the measure of ∠x in this diagram?

A:

Q: If A = 1 , then the value of A“ is

A: A matrix is a mathematical object containing numbers arranged in rows and columns. The order of a…

Q: ᴛᴡᴏ ᴅɪᴄᴇ ᴀʀᴇ ʀᴏʟʟᴇᴅ. ɪꜰ x ɪꜱ ᴛʜᴇ ꜱᴜᴍ ᴏꜰ ᴛʜᴇ ɪᴅᴇɴᴛɪᴄᴀʟ ɴᴜᴍʙᴇʀꜱ ᴏɴ ᴛʜᴇ ᴛᴡᴏ ᴅɪᴄᴇ, ᴛʜᴇɴ ᴡʜᴀᴛ ɪꜱ ᴛʜᴇ…

A: The outcomes for each of the die is {1, 2, 3, 4, 5, 6}.

Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.