5. The figure shows a scatterplot with a regression line for teachers' average pay and the expenditure per pupil for each state for public schooling in 2007, according to The 2009 World Almanac and Book of Facts. (a) From the graph, is the correlation between teachers' average pay and the expenditure per pupil positive or negative? (b) Interpret the slope. (c) Interpret the intercept or explain why it should not be interpreted. IHomework - 3 4 Predicted Expenditure = -1424 + 0.2315 (Average Pay) 17500 - 15000 12500 10000 - 7500 5000 35000 40000 45000 50000 55000 60000 65000 Average Pay Expenditure per Pupil

Q: The ranks of same 16 students in Mathematics and Physics are as follows. Two numbers within bracket ...

A:

Q: Now, instead, assume you’ve bought all the buses from a single dealership that maintains that these ...

A: A two tail test is used when we want to find significance of mean greater than x and mean less than ...

Q: s how it works?

A: Survival Analysis: Survival analysis is a model for time until a certain “event.” The event is somet...

Q: Is there a significant relationship between income and the level of work adjustment of the individua...

A:

Q: Find the co-efficient of correlation for the following table : x: 10 14 18 22 26 30 у: 18 12 24 6 30...

A:

Q: X is Normally distributed with a mean of 200 and a standard deviation of 25. What is the probability...

A: Given,mean(μ)=200standard deviation(σ)=25

Q: Nlustration 25. Calculate mode from the following data: Klarks 40-50 50–70 0-10 10-20 20-40 Frequenc...

A:

Q: (i) IfX is a normal RV with mean zero and variance o, find the pdf of Y = e*. (ii) If X has an expon...

A:

Q: 4. One method to estimate the causal effect of education on income based on the Vietnam draft lotter...

A:

Q: A researcher wishes to estimate, with 95% confidence, the population proportion of adults who think ...

A:

Q: he average height of a large group of children is 43 inches, and the SD is 1.2 inches. The average w...

A: Since the plotted scatter diagram is football-shaped and for the provided correlation coefficient (i...

Q: Given Q3 = 13.01, median = 10.84, and Q1 = 5.06, what is the location of the upper fence for a boxpl...

A: Given,Q3=13.01Q2=median=10.84Q1=5.06

Q: The mean of marks in Statistics of 100 students in a class was 72. The mean of marks of boys was 75,...

A:

Q: Use the binomial probability distribution formula to compute the probability that out of 10 coin fli...

A: We have given that  n = 10 Probability of getting head (p) = 1/2 = 0.5 Here we use binomial distribu...

Q: Example 17. The relation between a country’s import M and income y is given by 1 2 M = 10 + – · y wh...

A:

Q: Are Major and Degree Earned qualitative or quantitative variables?_________ The table summarizes da...

A: We need to answer the given questions using reference of table.  

Q: In a random sample of five observations, you obtained the following values for variable X. Whats the...

A: The number of observations n is 5.

Q: Which of the following is a correct interpretation for P(x > 35)? O a. determine a probability that ...

A:

Q: Match each correlation value with its interpretation A. Large (strong) negative relationship B. Smal...

A: Given: A. Large (strong) negative relationship B. Small (weak) positive relationship C. Large (stron...

Q: The Statspoodle, a German dog, can have pointy or floppy ears. Whether a Statspoodle has pointy or f...

A:

Q: 12. An insurance company estimates that the probability that an individual in a particu risk will su...

A: Since you have posted multiple questions, as per our guidelines, we have answered only 1 question. P...

Q: The Mean, Mode and Q.D. of a distribution are 42, 36 and 15 respectively. If its Bowley's coefficien...

A:

Q: How many should I ask in each year level?

A:

Q: Consider the joint pmf p(X,y) and marginal pmfs p(x) and p(y) for two discrete random variables X an...

A: Required probability is P(X-Y=1)

Q: A new brand of shoes joins the market. Sprinters are wondering which brand they should get, or if it...

A: Denote μ1, μ2 as the population mean times to run for 100 m using first and second brand, respective...

Q: If the continuous RV X has pdf f(x) = (x + 1), in – 1 < x < 2 and 0, %3D elsewhere, find the pdf of ...

A:

Q: (a) Find the area under the standard normal curve to the right of z = -2.32. .0102 (b) Find the area...

A: The z score is -2.32.

Q: The first quartile is

A: here use standard normal distribution table for z score for 0.25

Q: Construct an ordered Stem and Leaf plot by hand using your pencil and paper.

A: Here use ascending order of data 

Q: You are an educational researcher at McMaster University. Suppose you know that 22.7% of the entire ...

A:

Q: Solve the system by the addition method.   2x−3y = −5 5x+4y = −1

A:

Q: Exposure to dust at work can lead to lung disease later in life. One study measured the workplace ex...

A: Given, Exposure to dust at work can lead to lung disease later in life. One study measured the workp...

Q: Construct the indicated confidence interval for the population mean u using the t-distribution. Assu...

A:

Q: A random sample of 20 maximum sentences for murder yielded the data, in months, presented to the rig...

A: Given data is259,266,261,266,342,333,306,255,309,288,375,298,294,292,294,272,273,265,278,297sample s...

Q: Consider the following hypothesis test for the mean difference. (Give your answers correct to four d...

A:

Q: You are an educational researcher for McMaster University. You know that a particular program at the...

A: Assume that p as the true proportion of first year students.

Q: If you are constructing a box plot, what is the value that is at the upper end of the "box?"

A: Here given 5 point summary  18,19,20,21,45  

Q: Step 3: Sort the data in a table - FREQUENCY DISTRIBUTION TABLE Interval Tally Frequency Cumulative ...

A:

Q: The amount of sugar was measured for a sample of 30 different breakfast cereals. The sample mean amo...

A: Given: Sample mean (u)=10.4 Sample standard deviation (σ)=5.3 Number of sample (n)=30 We have to cal...

Q: A fish tank in a pet store has 23 fish in it. 9 are orange and 14 are white. Determine the probabili...

A: As per our guidelines we are supposed to answer only one question per post so I am solving first que...

Q: We conduct a study to assess if there is the same variation in grades between engineering students a...

A:

Q: In a survey of 2003 adults in a recent year, 706 made a New Year's resolution to eat healthier. Cons...

A: Givenn=2003x=706p^=xn=7062003=0.3525

Q: Construct the confidence interval for the population mean p. c= 0.95, x= 16.4, o = 10.0, and n= 70 A...

A: Given;confidence level(c)=0.95,  significance level(α)α=1-0.95α=0.05z critical value;  zα2=z0.052=z0...

Q: A random sample of 460 ball bearings chosen at random from a very large consignment is found to have...

A:

Q: 3. Consider the above Frequency Distribution of Salaries. Salary 41,000 - 50,000 51,000 - 60,000 61,...

A: Given the frequency distribution of salries. We need to answer the following questions: 1.What perce...

Q: A consumer watchdog organization estimates the mean weight of 1-ounce "Fun-Size" candy bars to see i...

A:

Q: A statistics instructor asks each student in his classes to report how much the student spent on tex...

A: Data given  405,385,495,385,555,470

Q: We want to investigate whether Ozone values differ across months as measured.   State the null and ...

A: Given, We want to investigate whether Ozone values differ across months as measured. 

Q: Are X and Y independent? O No, p(x,y) # p(x)p(y) for x = 1, 3 and y O Yes, p(x,y) = p(x)p(y) for x =...

A: For the given joint distribution, Are X and Y independent?  

Q: Andy is a restaurant owner. He believes 79% of his customers are satisfied with the food quality of ...

A: