Let us measure the degree of relationship between the sex and scores of 20 students. Let Male = 0 and Female = 1. Student Sex Score

Q: Label the diagram.  Using the diagram what can you conclude about the approximate percentage of home…

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Q: The failure rate for taking the bar exam in Philadelphia is 41%.  If 375 people take the bar exam,…

A: Given that, The failure rate for taking the bar exam in Philadelphia is 41%  i.e. probability, p =…

Q: Kevin scored at the 70th percentile on a test given to 9920 students. How many students scored lower…

A:

Q: What is needed to investigate the strength of a relationship?

A: We have to write What is needed to investigate the strength of a relationship.

Q: How many performers earned exactly 3 stars? (be careful - compare the question wording to the scale…

A: The graph displays number of stars on x-axis and percentage of performers on y-axis. Total number of…

Q: Suppose at your university you are asked to find the relationship between weekly hours spent…

A: Correlation: Correlation a measure which indicates the “go-togetherness” of two data sets. It can be…

Q: What is negative relationship?

A: In statistics, negative relationship means inverse relationship between the two variables.

Q: е. Find her percentile scores for the two exams. (use R-code)

A: The score of Mathematics is 94.6 and the score of  Physics is 93.7 Mean score of  mathematics 86.1…

Q: Kevin scored at the 70th percentile on a test given to 9940 students. How many students scored lower…

A: Given Kavin got 70 percentile. Total students are 9940.

Q: The average score in a Science exam was 82 with a SD of 4. The average score on a Math exam was 96…

A: Given : For Science Exam : =82 =4 For Math Exam : =96 =3

Q: Create a table wherein it shows your score or your • class interval • class width • frequency •…

A: To create a table where a data is shown with the frequency, class interval and cumulative frequency.

Q: Kevin scored at the 60th percentile on a test given to 9920 students.How many students scored lower…

A: Given Kevin score = 60th percentile No. Of students = 9920

Q: Kevin scored at the 60th percentile on a test given to 9920 students. How many students scored lower…

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Q: The speed of an airplane in miles per hour is discrete and ratio data. Select one: O True False

A: Data that can take definite integral values are discrete data. Discrete data are concrete numbers…

Q: Suppose that there is a negative relationship between grade point average and the number of hours…

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Q: The mean age of a combined group of men and women is 30 years. If the mean age of the group of men…

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Q: What percentage of scores are between scores 75 and 89?

A: By emperical rule  P(-1<Z<1)= 0.68 P(-2<Z<2)=0.95 P(-3<Z<3)= 0.

Q: Determine whether the variable is qualitative or quantitative.   Distance in miles to the nearest…

A: Quantitative variable: Quantitative variable is a variable that has numerical values within a…

Q: Rene scored at the 84th percentile on a test given to a 12600 students . How many students scored…

A: Given percentile of Rene=84

Q: A student scored between 81% and 93% on all exams except for one that she failed with a 47% because…

A: Mean & Median : The mean of the data set is calculated by adding all observations in the data…

Q: The variable height that is measured into short and tall groups is considered a variable.…

A: We know that  A quantitative variable represents a measure and is numerical. while qualitative…

Q: After six biology tests, Ruben has a mean score of 74. What score does Ruben need on the next test…

A: The mean score of Ruben after six biology tests is 74.

Q: The average salary of male employees in a firm was $520 and that of females was $420. The mean…

A: We have given that  The average salary of male employees =$520 And the average salary of females…

Q: Bob scored at the 65th percentile on a test given to 9960 students. How many students scored lower…

A: x = no. of data value less than x  * 100/total no. of data values

Q: A sample consists of n = 16 scores. How many of the scores are used to calculate the range?

A:

Q: On a placement examination, Fatimah scored lower than 420 of the 980 students who took the exam.…

A: It has been given that Fatimah has scored less than 420 of 980 students which means her score is…

Q: The estimated score will be between

A: Here given regression equation  of hours of studies and test score

Q: On a placement examination, Rick scored lower than 1228 of the 12,730 students who took the exam.…

A:

Q: NCAE shows that the average score of the students is 80 and sd is 15. What is the percentile rank of…

A: Given :     Mean (μ)=80Standard deviation (σ) = 15x=84

Q: e range. -36 39 46 43 37 34 56 43 34 15 52 38 49 29 29 is 22, is iS mals.)

A: Given, 41, 51, 36, 43, 40, 36, 39, 46, 43, 37, 34,  56, 43, 34, 15, 52, 38, 49, 29, 29

Q: Consider the following data on x = weight (pounds) and y = price (5) for 10 road-

A: Given information: Given data represents the values of the variables X = Weight and Y = Price for a…

Q: The mean salary for 24 factory workers is ₱12 000. How much will one additional salary of ₱37 000…

A:

Q: Kevin scored at the 60th percentile on a test given to 9920 students. How many students scored lower…

A: Since Kevin scored 60th percentile, it means that Kevin's score is in the top 60 % of amongst the…

Q: After six biology tests, Ruben has a mean score of 75. What score does Ruben need on the next test…

A: Let 'x' denote the score Ruben need to score on the next, i.e. seventh test so that his average…

Q: A colleague of yours is faced with testing a relationship at the .05 level or significance or the…

A: Level of significance The level of significance is defined as the probability of rejecting a null…

Q: What is Positive Relationship?

A:

Q: The mean score on a test is 75, the median score is 80, and the mode score is 85.  Pat got an 82.…

A: Given: The mean score on a test is 75, the median score is 80, and the mode score is 85.

Q: The distribution of cholesterol levels in teenage boys is approximately normal with μ = 170 and σ =…

A: Let X=cholesterol level in a teenage boy Given that X follows a normal distribution with mean= 170…

Q: Pat and Chris both took a spatial abilities test (mean=80, std. dev.= 8). Pat scores a 76 and Chris…

A: Given that, μ=80,σ=8,X-score of pat =76X-score of chris =94 Assume that test score X follows normal…

Q: Is parameter proportion the same as statistical proportion. so lets say the statistical proportion…

A: it is given, statistical proportion =0.49

Q: 350 students took a standardized test, Sarah’s score was ranked at the 7th. What was the percentile…

A: that is (7×100)/350=700/350 =2

Q: In California, we need more rain to sustain the health of our natural environment, argriculture, and…

A: Inches of Rain(x) frequency(f) f*x 1 4 4 2 3 6 3 0 0 4 7 28…

Q: what is the measure of x?

A:

Q: A student has two test scores. The difference between the test scores is 20 and the mean, or…

A: Suppose the two test scores of students are x and y. Given that the difference between the two test…

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

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Q: After six biology tests, Ruben has a mean score of 72. What score does Ruben need on the next test…

A:

Q: Jamie's grade point average is

A: Given, Grade Points A 4 B 3 C 2 D 1 F 0   Subject Grade Credits Calculus B 3…

Q: The histogram and the frequency table show the same information about the time that vehicles spent…

A: (1). Complete the histogram and the frequency table: The frequency table for the time that vehicles…

Q: The table shows the ratios of black socks to white socks in the women's and men's department of a…

A: