O b. There is a strong negative correlation between the number of hours spent by the learners in studying and their academic performance. As a learner spends more time in studying, the lower is their academic performance. O c. There is a perfect correlation between the number of hours spent by the learners in studying and their academic performance. As a learner spends more time in studying, the higher is their academic performance. O d. There is no correlation between the number of hours spent by the learners in studying and their academic performance.

Q: Iilustraiion 19.28. A correlation ;coefficient of 0.2 is obtained from a random sample of 1,600 pair...

A:

Q: An investor buys a stock and keeps it for 12 months. At the end of each month, he records whether it...

A:

Q: 1. The following data is given: 2 5 8 9 13 15 y 7 8 10 11 12 14 15 Use linear least-squares regressi...

A: Note- Since you have posted multiple questions, as per our guidelines we are supposed to answer only...

Q: ice of eggs and milk: The following table presents the average price in dollars for a dozen eggs and...

A: Dozen eggs (X) :-1.77, 1.94, 1.96, 1.89, 1.96, 1.83, 1.80, 2.01 Gallon of milk (Y):-3.43, 3.52, 3.58...

Q: Twenty boats make 6 transatlantic trips each per year, and 10 boats make 4 trips per year. What is t...

A:

Q: The ice cream shop offers 16 flavors. You order a triple-scoop cone. In how many different ways can ...

A:

Q: 4.2. One at a time, until the lock is opened (keys that do not work are disca before another is trie...

A: Since you have posted multiple questions, as per our guidelines, we have provided answer for first q...

Q: 17. Fisher's ideal index for 2005 is : (A) 49.13 (B) 47.13 (C) 46.13 (D) 46.13.

A:

Q: A study of all 2093 employees of a company shows that 54% are satisfied with the company's health ca...

A: Definition  Statistic: Statistic may be defined as which one is based on the sample  Parameter: Para...

Q: For the following data, what is SSbetween treatments? ​Treatments Subject        I           II   ...

A: The formula of SS due to treatments is,

Q: you flip a coin 8 times, you get a sequence of Heads (H) and tails (T). a. How many different seque...

A: Given flip a coin 8 times, you get a sequence of Heads (H) and tails (T).  

Q: Suppose the probability that you will be elected student president is 0.15, and the probability that...

A: #Given  Suppose the probability that you will be elected student president is 0.15, and the probabil...

Q: Which of the following descriptions best illustrate the central limit theorem? I. The central limit ...

A: Central limit theorem: The distribution of the sample mean will be normal if the sample size is suff...

Q: The weight of miniature donkeys is normally distributed with a mean weight of 265 pounds and a stand...

A:

Q: A survey was conducted among a random sample of 196 experienced meditators.  Their sample mean lengt...

A: We have given that Sample size n =196 Sample mean =12.5 Standard deviation =11.2

Q: Total 874 432 245 1551 Given that a randomly selected respondent thought it was a bad idea, what is ...

A: We have given that the following table shows the responses to the question, cross-tabulated with res...

Q: We are interested in estimating the proportion of graduates at a mid-sized university who found a jo...

A:

Q: complete solution pls 50 students at Holy Spirit High were interviewed to determine what sports the...

A: Ans# Given 50 students at Holy Spirit High were interviewed to determine what sports they played, if...

Q: (1) Suppose we think that listening to classical music will affect the amount of time it takes a per...

A: Given that, the average  person in the population falls aseep in 15 minutes with standard deviation ...

Q: An international trade commission obtained a random sample of Chinese consumers to determine whether...

A: Given that  We have to conduct Chi square test and find that  Test statistic, Critical value, Decis...

Q: Is a new method of teaching reading to first graders (Method B) more effective than the method now i...

A:

Q: Urn A contains 3 white and 4 red balls. Urn B contains 4 white and 5 black. If an urn is chosen at r...

A:

Q: 2. A particular telephone number is used to receive both voice calls and fax messages. Suppose that ...

A:

Q: The time taken to assemble a car in a certain plant is a random variable having a normal distributio...

A: Let X be the random variable from normal distribution with mean (μ) = 20 and standard deviation (σ) ...

Q: Suppose we are interested in checking if a currency is honest. To this end, this currency was releas...

A: In hypothesis testing when we test for population proportion, it is done so using normality approxim...

Q: * For the following data, the Fisher's quantity index number for current ye: Base year Current y етт...

A:

Q: To determine how the number of housing starts is affected by mortgage rates an economist recorded th...

A: Correlation coefficient measures the strength and direction of the linear relationship between two v...

Q: e) The means of all three data sets are to be compared  by ANOVA. State the null hypothesis. Determi...

A: We need to compare the means of all the three data  H0  : μSet 1 = μset 2  = μSet 3    v/s  H1  : μS...

Q: Urn A contains 3 white and 4 red balls. Urn B contains 4 white and 5 black. If an urn is chosen at r...

A:

Q: From the following data compute quartile devia- tion and the Coefficient of Skewness. Size : 5-7 8-1...

A:

Q: Based on a recent survey, 20% of adults in a specific country smoke. In a survey of 60 students, it ...

A:

Q: Find the ?2 critical values using the information in the table. set ? df a) 0.05 4 b) 0.02...

A:

Q: Calculate Pearson's coefficient of correlation from the following data. Take 65 and 70 as the assume...

A:

Q: what is the probability that the sample proportion will differ from the population proportion by les...

A: We have given that the true population proportion p = 0.07. The sample size n = 492.

Q: Question 2 of 10 To estimate the mean height of female high school juniors, you take a random sample...

A: Given

Q: In a class of 40 students, there are 20 girls and 20 boys. Eight are A students, and three of these ...

A:

Q: . How many 4 -digit numbers can be formed in 1, 2, 3, 4, 5, 6 and 7 if repetition is not allowed?   ...

A:

Q: A population of values has a normal distribution with u = 190.9 and o = 93.5. You intend to draw a r...

A: We have given that.   X~N( μ , ?^2 )   μ= 190.9 , ? =93.5 , n=229   Z-score =( x - μ )/?

Q: b. If one capsule is randomly selected from the daily production, what is the probability that it is...

A: Given data is    Good  Defective Total A 40 35 75 B 35 15 50 C 45 30 75 Total 120 80 200

Q: About locating percentile under the normal curve. Direction: Solve the following.

A: The z score is used to determine the number of deviation from the mean. It is calculated by the comb...

Q: The F-ratio for a repeated-measures ANOVA has df= 4, 40. The research study compared ____ treatments...

A:

Q: If n1 = 4 and n2 = 3, how many degrees of freedom do you have? Also referring to problem 4, n1 = 4an...

A:

Q: 4. z-score in which the area to its left is .25 5. z-score in which the area to its left is 75%

A:

Q: For the frequency distribution given below, cal- culate the coefficient of skewness based on the qua...

A:

Q: (1) Find the value of k which make the following function a pdf fly) = { (15/64) +(y/64) -1<= y <= 0...

A:

Q: Paasche's index for 2005 is : (A) 48.12 (B) 49.12 (C) 47.12 (D) 46.12.

A: It is given that ∑p1q1 = 450.1 ∑p0q1 = 916.3

Q: A certain tennis player makes a successful serve 70% of the time. Assume that each serve is independ...

A: Givenp=0.70n=6x~Binomial(n=6,p=0.70)P(X=x)=(nx)×px×(1-p)n-x   ; x=0,1,...,n

Q: mpany that TV network A garnered 31% audience satisfaction. To test the claim, TV network A conducte...

A:

Q: In how many ways can a person order one ice cream cone with 3 different flavors of ice cream if ther...

A:

Q: (2) Sam is a representative who sells large appliances such as refrigerators, stoves, and so forth. ...

A: Given:   x f 0 9 1 72 2 63 3 41 4 28 5 14 6 8 7 5