You are told that your IQ scores falls at the 79th percentile.  What conclusion could you make about how you scored compared to others?

Q: in a recent poll 13% of all respondents said they are afraid of heights

A: a) Here, n = 3, p = 0.13, (1 - p) = 0.87 and x = 3As per binomial distribution formula P(X = x) =…

Q: A college counselor wants to determine if the number of hours spent studying for a test can be used…

A: An explanatory variable is the one which can be changed independently or what you manipulate or…

Q: Answer the following questions with a solution. 7. What is the 30th percentile of the following set…

A: As per bartleby guideline expert have to answer first question only dear student please upload other…

Q: If you have a z-score of 4.00 and the body proportion is .99997 and the question is asking for the…

A: The z-score is given by 4.

Q: the mean = 146, and s =  35 Question #3 A percentage of female students with scores between 41 and…

A: From the provided information, Mean (x̅) = 146 Standard deviation (s) = 35

Q: The 70th percentile of the data presented in the table above is

A:

Q: If I tell you that you scored at the 85th percentile know:

A: Here use definition of percentile  Percentile represents the how much data below or at that value…

Q: Akiko surveyed several friends, asking them how many siblings they had. Use this data to find the…

A:

Q: In a sample of n= 6 scores, five of the scores are each above the mean by one point. Where is the…

A: The mean of a data can be obtained as follows:

Q: What is the test statistics? From the problem in the picture

A: Given - n1=20, x1=8.2, s1=5.9n2=30, x2=5.6, s2=5.7

Q: If a person’s z score equals -2.02, what is their percentile?

A: Given problem Given that   Given Person's z score =  -2.02 Using the Standard Normal Table ( Z Table…

Q: Students may be classified as having a math dysfunction - and not have to take statistics - if they…

A: Ans#-  Given the mean μ = 75 and the standard deviation σ = 10              P(X < x0) = 10% =…

Q: In general, % of the values in a data set lie at or below the 98th percentile. % of the values in a…

A: A percentile is the share of values that lie below a given score.

Q: From the information in the article, in a town consisting of 2,300 rich students born in 1980, how…

A: The total number of rich students in 1980 = 2300Here the graph is plotted parents Income percentile…

Q: What can you say about the accuracy of the forecast for an earthquake?

A: Forecasting of an earthquake are used to establish codes of bulding, in awareness programs and in…

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 Bank of Canada is interested in studying the relationship between mortgage rates and median home…

A: Given information: The data represents the values of the variables Interest rate (%) and Median home…

Q: On a psychology exam with µ = 76 and o = 12, Tom scored 9 points below the mean (M), Mary %3D had a…

A: Given, On a psychology exam with μ =76 and σ=12, Tom scored 9 points below the mean(M), Mary had a…

Q: To which percentie,quartile and decile does the median correspond?

A: We want to find the relationship between median, quartile, percentile, decile

Q: Explain the term "deviation scores"?

A:

Q: 1)If all of the values in a set of data were doubled, what would happen to the mean?

A:

Q: What is the measure of PD?

A: From the figure  FD is diameter , Therefore, ∠FED=90∠FEP+∠PED=9035+∠PED=90∠PED=90-35∠PED=55

Q: Consider a survey in which 1000 people are asked “How often do you go to the dentist?”  The variable…

A: Given: Number of people that have been involved in the study = 1000

Q: When the mean and the median are far apart in value, there may be some extreme values in the data…

A: If they're far apart, then the values are not normally distributed and the median is the better…

Q: For which of the following is the mean greater than the median?

A: Among these graphs , no (e) is a negatively skewed distribution and according to the property of the…

Q: The relative risk of developing lung cancer among individuals who smoke is 15.0. Which of the…

A: Relative risk is the ratio of probability of an outcome in an exposed group to the probability of an…

Q: which in the picture is an estimator for the population mean µ?

A:

Q: How is the goal of descriptive statistics served by putting scores in a frequency distribution?

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

Q: For question #4, write your answer exactly as it appears. 4) It has been known that 18% of victims…

A:

Q: A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651 adults,…

A:

Q: A researcher wants to determine whether there is an association between weight and scores on the…

A: Given: R-value = 0.213 P-value = 0.3

Q: A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651 adults,…

A: From the given information,   better same worse Total Republican 38 104 44…

Q: What are the two ways to understand the mean of a data set ? How would you go about giving examples…

A: Grouped Mean: Grouped mean is the mean of the dataset that is given in a grouped format with classes…

Q: For what kinds of data is the arithmetic mean inappropriate?

A:

Q: In general, % of the values in a data set lie at or below the 74th percentile.

A: Solution: 74th percentile means that 74% of the data below that value and of 100–74=26% of the data…

Q: If a person’s z score equals 2.08, what is their percentile?

A: Given info: The person’s z score equals 2.08.

Q: In a given set of scores, the following data were obtained, the highest score is 83, the median…

A: A P percentile is the value in a dataset below which P percent of the data lies. A median is the…

Q: The following is a frequency distribution table and a histogram summarizing the time that it took a…

A: Given  interval frequency 0-2 96 3-5 44 6-8 21 9-11 18 12-14 11 15-17 6 18-20 4…

Q: Is IQ related to GPA?If a student’s IQ is 117, what GPA would you predict?How much of the variation…

A: Given Info :  The provided data are from a random sample of thirty cases from a study by Howell…

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

A: Note that always it is preferred to score the highest score in test.

Q: In a poll, 200 people were asked if they prefer to watch baseball or football. They were also asked…

A: The formula of the relative frequency is,

Q: What proportion of the population score above an 18 on the ACT? What proportion of students score…

A: Given: Let X denote the SAT score thus, X~ N(500, 1002) Let Y denote the ACT score thus, Y~ N(20,…

Q: The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with ?=100 and ?=15 .…

A:

Q: On a reading test, Shaylen's score of 455 was higher than the scores of 4252 of the 7274 students…

A: The percentile of score x is calculated by below formula percentile of score x =Number of data value…

Q: This tells us how much the observation spread out from the mean.

A:

Q: With no preliminary estimate of the proportion known, how many young adults would you survey to…

A: It is given that margin of error (E) is 0.10 and the confidence level is 0.99.

Q: from the letters of the word STATISTICS?

A: Given the letters of the word STATISTICS

Q: Given μ=25and σ=4.8,what would be the x-value for the twenty-fifth percentile?

A:

Q: QUESTION 2 What percent of scores are above an ACT score of 19?

A: we have to find given probability percentage..

Q: The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with ?=100μ=100 and…

A: Given dataMean = 100Standard deviation = 15Probability of scoring less than 130 is given by

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.