Many university admission committees use the GMAT score as one of the critical indicators of how well a student is likely to perform in an MBA program.  However, the GMAT might not be a very strong indicator for all MBA programs.  Suppose that an MBA program designed for middle managers who wish to upgrade their skills was launched 3 years ago.  To judge how well the GMAT scores predict MBA performance, a sample of 12 graduates was taken.  Their GPA in the MBA program (values 0 to 12) and their GMAT scores (values ranging from 200 to 800) are listed below.  Compare the covariance and the correlation coefficient.  Interpret your findings. GMAT GPA 599 9.6 689 8.8 584 7.4 631 10.0 594 7.8 643 9.2 656 9.6 594 8.4 710 11.2 611 7.6 593 8.8 683 8.0

Q: ABC Inc., with the province-wide operation for 15 years, is estimated to have about 12.5% the market…

A: Given that,sample size(n)=650success rate ( p )= x/n = 0.158success probability,( po )=0.125failure…

Q: →>> What's a standard score?

A: Introduction  from the above question we have to explain what is a standard score

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North Amercian catfish. The current…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: A DNP student wants to evaluate the change in knowledge scores of a group of cardiac patients after…

A: In given problem, a DNP student obtains a pretest at the beginning of class and immediately after…

Q: In June an investor purchased 300 shares of Oracle at $41 per share. In August she purchased an…

A: From the provided information,X be the share price of Oracle.Let, w be the number of shares.

Q: Which number best approximates risk associated with tea drinking in men?

A: Tea drinking cancer patients in men = 140Total cancer patients in male = 200Tea drinking other…

Q: A set of 100 values has a median value of 40. What is the value of the 75th percentile in this set…

A: Introduction: Percentiles are used in statistics to divide a set of numerical values into 100 equal…

Q: The Ipsos survey found that Conservative party voters were willing to spend the least amount in…

A: Introduction: Since the researchers wish to know if the income level of a person explains the amount…

Q: If we take many samples, the sample mean ?⎯⎯⎯�¯ varies from sample to sample according to a Normal…

A: Let μ be the population mean mathematics score. Given that, Sample size (n) = 147,400 Sample mean…

Q: Human resource managers face the business problem of assessing the impact of factors on full-time…

A: Let us define total worldwide revenues as X1, FT voluntary Turnover and Total FT job openings as Y.…

Q: An oil company conducts a geological study that indicates that an exploratory oil well should have a…

A: Given that  n=5 , p=20%=0.20 , q=1-p=1-0.20=0.80 X~Binomial(n=5,p=0.20) p=probability of chance of…

Q: Why is a year of sale is considered as a one example of discrete data? What is the level measurement…

A: Year of sale is discrete data  because year of sale is limited sale that can be countable there a…

Q: A survey by a magazine stated that 14% of men said they used exercise to reduce stress. A random…

A: from the above datawe are given thatp=0.14n=100x=10p^=xnp^=10100p^=0.10Test…

Q: The Coca-Cola Company reported that the mean per capita annual sales of its beverages in the United…

A: Mean(x)=460.4 standard deviation(s)=101.9 sample size(n)=36

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

A: The given situation follows binomial distribution. The proportion of people born in United States…

Q: Researchers examined the influence of a television program on children's aggressiveness. The number…

A: Since we only answer up to 3 sub-parts, I'll answer the 1st 3 sub-parts. Please resubmit the…

Q: imagine you’re hired by a beef company called “American Beef Makers” as a Data Analyst and you’re…

A: Please note that as per our guidelines if multiple sub-parts are there in a question we can answer…

Q: When trying to summarize a set of numerical data, why is giving a measure of center such as the mean…

A: Introduction: A measure of central tendency of data is a measure of the tendency of the values to…

Q: what does being in the 60th percentile mean?

A: Given that 60th percentile   Let a student got 60th percentile in a exam

Q: What is the lowest measure of central tendency and is used primarily for nominal data to identify…

A: We know there are mainly three measures of central tendency:Mean, mode and medianWe first know where…

Q: At the local college, a study found that students earned an average of 8.5 credit hours per…

A: Given, the average credit hour per semester is 8.5. The sample size is 127 students.

Q: State whether the mean, median, mode is being used. a. In 2002, there were as many people aged 25…

A: a) Median is a middle number is a sorted ascending or descending order. Here, it is clear that there…

Q: he GDP and selected indicators for the United States, years 2019 and 2020, are found below. What are…

A: Reviewing information, Given data is,

Q: when trying to decide what car to buy, real value is not necessarily determined by how much you…

A: To determine the best car value, it is crucial to consider factors beyond the initial purchase…

Q: How do I attach an Excel or SPPS.sav data set to this question window?

A: Ensure that you have the field titles, i.e. variable names, in row 1 at the top of each column of…

Q: Using excel the median is 16.70 but when I calculate it manually it comes to 13.9. Why is excel…

A:

Q: In 2016, the Honors College at a large state university claimed that the average GPA of its…

A: The hypotheses are; H0: M ≥ 3.80 Ha: M < 3.80 This is a lower-tailed test.

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: Mina is waiting in line at the Department of Motor Vehicles (DMV). Her wait time is in the 85th…

A: It is clearly given in statement that at Department of Motor Vehicles waiting line is Mina wait time…

Q: In June, an investor purchased 3000 shares of Oracle (an information technology company) stock at…

A: Let, X be the share price of Oracle. X1=$53X2=$42X3=$45 Let, w be the number of shares.…

Q: The following pairs of numbers are the scores made by seven students on a language test (x) and a…

A: From the given information, the hypotheses are,That is, there is no evidence to conclude that there…

Q: Find the percentile rank of a test score of 76 for the data set 70,73,68,83,78,80,89,88,65   FULL…

A: Given data is70,73,68,83,78,80,89,88,65

Q: What is the 75th Percentile of a data set when the Inter Quartile Range (IQR) is 12.5 and the first…

A:

Q: What is the relationship between the average income and the level of education in a given…

A:

Q: psychologist wanted to know if students in her class were more likely to cheat if they were low…

A: ANSWER:After reviewing the data set, we need to determine whether the observed patterns support or…

Q: State whether the mean, median, mode is being used. a. In 2002,there were as many people aged 25 and…

A: A measure of central tendency describes a set of data by identifying the central position in the…

Q: When we comparing the hospitals in our area for seeking a better care, what statistics or data we…

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

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.