Calculate the correlation coefficient for the following data sets and then plot these data sets as scatter plots: (a) x 26 12 26 16 11 21 26| 14 y 22 34 23 27 33 33 28 36 answer: r= -0.77357 (b) u 38 7 9 10 17 28 v 30 30 48 38 38 40 49 43 answer: r = 0.53995 using the law ΣΧy - nXy Exiyi r = / (Σ- nx2) (Σy-ny )

Q: If n=17, ¯xx¯ (x-bar)=40, and s=6, find the margin of error at a 99% confidence level (use at least ...

A: Givenn=17x=40s=6confidence level = 99%

Q: 3. An experiment is conducted to test whether the installation of cavity-wall insulation reduces the...

A: Given The data is as follows: α=0.05

Q: A researcher knows that the weights of 6-year olds are normally distributed withu = 20 kg and o = 3....

A: The random variable is weights of 6-year old follows normal distribution. The population mean is 20 ...

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in th...

A: applying one way ANOVA on above data:   Mean n Std. Dev Variances budgets 257.4 5 11.7388 137.8...

Q: Calculate median from the following data: 30-60 Marks 60-80 80-90 0-10 10-30 8 2 No. of Students 5 1...

A:

Q: Bottles of purified water are assumed to contain 250 milliliters of water. There is some variation f...

A: Claim : The mean amount of water in all the bottles filled that day differs from the target value of...

Q: Calculate median from the following data: 30-60 60-80 80-90 Marks 0-10 10-30 No. of Students 15 30 8...

A:

Q: Find the population variance and standard deviation for the following population. Round the answers ...

A:

Q: CABANATUAN CHTY CULATE CON I. On the space provided, determine the margin of error and the confidenc...

A:

Q: Suppose that a satellite defense system has 3 satellites that operate independently.  Each satellite...

A: It is needed to determine the probability distribution for the random variable X.

Q: Find the relationship between variance and standard deviation. A.(Variance)2 = standard deviation B....

A:

Q: A bowl contains 24 pieces of fruit, 6 oranges and 18 apples.  Two pieces of fruit are randomly selec...

A:

Q: Three samples are taken comprising 120 doctors, 150 advocates and 130 * university teachers. Each pe...

A:

Q: The (arithmetic) mean height of 50 students of a college is 5' - 8". The height of 30 of these is gi...

A:

Q: The number of initial public offerings of stock issued in a 10-year period and the total proceeds of...

A: Use the Excel and Perform the Regression. Followings are the Steps to perform the Regression 1) Open...

Q: II. Using proportional allocation, determine the sample size needed for every school. The total popu...

A: Proportional Allocation: Allocation of ni's to various strata is called proportional if the sample f...

Q: 2. Suppose there is a race between 9 friends. How many ways can the race be completed if John is fir...

A: Here use concept of total arrangement 

Q: Example 7.36. Let {Xx be mutually indepenaent, each assuming the values 0, 1, 2.3 ..., a - 1 with pr...

A:

Q: The following data are given to an economist for the purpose of economic analysis. The data refer to...

A:

Q: 1. Suppose when using the Binomial Theorem an expansion turned out to be the expression as shown bel...

A: Formula for Binomial theorem: a+bn=an+nan-1b+nn-12!an-2b2+nn-1n-23!an-3b3+.....+bn Given expression:...

Q: Determine the appropriate sample size using G*power for a study that will employ independent sample ...

A: From the given information, Significance level, alpha=0.05 Power=0.80 a) Effect size for small effec...

Q: Find the standard deviation, s, of sample data summarized in the frequency distribution table below ...

A:

Q: the IRS, individuals filing federal income tax returns prior to March 31 received an average refund ...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a...

Q: For An observer stands at an overpass of a highway and counts the vehicles that pass by. He stops co...

A:

Q: Two researchers adopted different sampling techniques while investigating the same group of students...

A:

Q: A box contains 8 items of which 2 are defective. A man selects 3 items at random. Find the expected ...

A:

Q: A typing school claims that in a six-week intensive course, it can train siudents to type, on the av...

A:

Q: * Question 7 of 15, Check My Work (2 remaining) he 94 million Americans of age 50 and over control 5...

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case yo...

Q: If Ted scores in the first quartile on his math test, that means he scored better than most students...

A:

Q: Example 7. demand function is given by D= 30 – 4p – p². Find Total revenue. Marginal revenue and ela...

A:

Q: The numbers of incorrect answers on a twe or false competency test for a random sample of 15 student...

A:

Q: (a) Find Bowley's coefficient of skewness for the following frequency distribution:- No. of children...

A: Given: No. of children per family No. of families 0 7 1 10 2 16 3 25 4 18 5 41 6 8

Q: Assume that when human resource managers are randomly selected, 54% say job applicants should follow...

A: Given,n=9p=0.54A random variable X~Binomial(n=9 , p=0.54)P(X=x)=9x0.54x1-0.549-x  ;  x=0,1,2,...9

Q: For the data set 8 7 4 8 6 8 5 9 12 6 5 7 3 7 24 65 4 17 10 5 4 Send data to Excel

A: Given data is8,7,4,8,6,8,5,9,12,6,5,7,3,7,24,6,5,4,17,10,5,4Arrange the data in ascending order3,4,4...

Q: A simple random sample of 60 items resulted in a sample mean of 25. The population standard deviatio...

A:

Q: late Pearson's ent őf skewness from the following data:

A: x f fx fx2 LCF 12.5 28 350 4375 28 17.5 42 735 12862.5 70 22.5 54 1215 27337.5 124 27.5 108 ...

Q: A pharmaceutical company wants to estimate the mean life of a particular drug under typical weather ...

A:

Q: (a) The standard normal curve is graphed below. Shade the region under the standard normal curve to ...

A:

Q: A school has to select one student to take part in a Philippines Math Wizard. Anne and Bong took par...

A: Box whisker plot is a graph that helps to understand the spread of the data. It helps to estimate th...

Q: 1. What are some examples, other than temperature, where similar averages can be associated with ver...

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: Let Y;, i = 1,...,n be independent N(Bo + YiB1, o²) and let W1,..., Wm be independent N(Y + w;Y1, o²...

A: @solution:::   X~N(29300,2000) X bar follows typical appropriation with xbar=mu=29300 test sd=sigma/...

Q: a. P (at most 3) b. P (one or more) C. mean u

A: Given: X has Hypergeometric distribution with N=15, n=4, k=5  

Q: Harriet McNeil, proprietor of McNeil’s Auto Mall, believes that it is good business for her automobi...

A: Here, it is related to discrete probability distribution, Here an average of 6.8 coustomers arriving...

Q: t estimates association between a binary outcome between groups at group level A. risk difference ...

A: 1) It estimates association between a binary outcome between groups at group level. The answer is Od...

Q: Learn the steps involved in constructing and validating an index.

A: An index is a composite statistic.

Q: Direction: Define and give your own example on each of the following. (Note: your example in populat...

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for yo...

Q: 3. An agronomist breed two rice varieties which are X variety that are long and aromatic grain and Y...

A: Chi-Square analysis analyzes the difference between the observed and expected value. It is a statist...

Q: Check My Work (2 remaining CCN and ActMedia provided a television channel targeted to individuals wa...

A:

Q: 2. How do you compute for the variance and standard deviation of the sampling distribution of sample...

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: Check My Work (2 remaining) The manager of a grocery store has taken a random sample of 100 customer...

A: