Suppose that IQ scores of Grade 11 students of Abuyog Academy is normally distributed with a mean of 110 and a standard deviation of 16. (a) What is the probability that a randomly selected Grade 11 student has an IQ score of 125? (b) What is the probability that the IQ score of a randomly selected Grade 11 students is less than or equal to 120? (c) What is the probability that the IQ score of randomly selected Grade 11 students is between 94 and 150?

Q: Q. 12. From the following data construct quantity index number using weighted average of relative me...

A:

Q: When taking a 18 question multiple choice test, where each question has 5 possible answers, it would...

A: Given :  n = 18 p = 1/5 = 0.2    

Q: a) In a private school students can choose only of French, Spanish or Music as their Elective. In a ...

A:

Q: When analyzing a correlation, the null hypothesis states that: Group of answer choices the correlati...

A: Here when we analysing correlation coefficient ,we take null and alternative hypothesis.

Q: Find the test statistic for a proportion "p" given the following information. Malloree ordered 15 p...

A: Givensample size(n)=15x=2p^=xn=215=0.1333

Q: Topic major measures of Central value A machinery depreciated by 40% in the first year, 25 per cent ...

A: It is given that a machinery is depreciated by 40% in first year, 25% in second year and 10% in thir...

Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a bell-shape...

A: According to the Chebyshev's theorem, 1-(1/k²) of the observation fall within k standard deviation o...

Q: the mean production of workers in a certain factory is 10 products per hour with a standard deviatio...

A:

Q: The standardized regression coefficient describes the relationship between X and Y in terms of _____...

A: Here we know that standardized regression coefficient describes the correlation coefficients and its...

Q: The average marks obtained in the annual examination is 65 with the S.D. of 10. The top 5% of the st...

A:

Q: c&d] Instruction: Solve the following problem: Records show that the performance of male college st...

A: We have given that  Sample size n1=44 , n2=36 Sample mean xbar1 =93.45 , xbar2 =87.42 s1= 4.35   , s...

Q: In a survey of 83 people, 23 consider themselves republicans, 21 consider themselves democrats. The ...

A:

Q: For the data shown, answer the questions. Round to 2 decimal places. 16.1 23.7 28 6.6 11.9 18.3 22.1...

A:

Q: show that the performance of male college students in Mathematics in terms of final grade is 5% high...

A: Given that  Level of significance=5%=0.05 Find null and alternate hypothesis 

Q: The average wages paid to all workers in a factory was $. 5000. The average wages paid to male and f...

A: Given that  Average of all workers=AA=5000 Average of male workers=AM=5200 Average of female workers...

Q: Listed below are amounts (in millions of dollars) collected from parking meters by a security servic...

A: ( 1 ) The coefficient of variation for the amount collected by the  Security service company   is =?...

Q: Example The average salary of male employees in a firm was Rs. 5200 and that of females was Rs. 4,20...

A:

Q: Q. 1. Fit a straight line trend by least square method from the following data : Value of X : 1 2 3 ...

A:

Q: b] Instruction: Solve the following problem: Records show that the performance of male college stud...

A: We have given that  Sample size n1= 44 , n2= 36 Level of significance =alpha 

Q: EXAMPLE 5a A police department in a small city consists of 10 officers. If the department policy is ...

A: Given Data No. of officers in a small city police department = 10 5 patrolling the streets 2 working...

Q: You may need to use the appropriate appendix table to answer this question. Suppose that the mean da...

A:

Q: (d) P(2 < X < 5)

A: Note: I have answered (d)  part only since you have asked specifically.  Thank you 

Q: In a study of cancer pulmonary effects on guinea pigs, Francois et al. in 2012 proposed that taking ...

A: The data of number of counts in guinea pig after using Almond oil and standard oil is recorded and t...

Q: If X is a Poisson variable such that P(X = 2) = 9P(X= 4) + 90P(X= 6), find the mean and variance of ...

A:

Q: 3. Which among the values is approximately equal to P(Z > -1.20)? a.0.8849 b. 0.7698 c. 0.1151 d. 0....

A: We have given that,  Z from normal distribution then we will find the probably P( Z &gt; -1.20 ) = ?...

Q: Calculate range and its co-efficient from the following statistical data: Profits ( $ in 000's) 125,...

A:

Q: A jar contains 6 pennies, 8 nickels and 7 dimes. A child selects 2 coins at random without replaceme...

A:

Q: prand of upright freezer is available in three different rated capacities: 16 ft, 18 ft³, and 20 ft3...

A: We have given that  Probability mass function  X 16 18 20 P(x) 0.1 0.3 0.6 I want to find me...

Q: Listed in the accompanying data table are student evaluation ratings of courses and​ professors, whe...

A: Given that,  Sample size for course evaluations = n1 = 93 Sample size for Prof. evaluations = n2 = 9...

Q: The fun size of a Snickers bar is supposed to weigh 20 grams. Because the penalty for selling candy ...

A: Given data: 19.6,19.9,20.5,21.5,20.6,20.6,20.3,19.7,19.5 n = 9  

Q: a recent study on world​ happiness, participants were asked to evaluate their current lives on a sca...

A: We have given that.   X~N( μ , ?^2 )   μ =5.5 , ? =2.1   Z-score =( x - μ )/?   NOTE:- According to ...

Q: Example 2-2. Calculate the mean for the following frequency distribution : Class interval : 0-8 8–16...

A: Given data : Class Frequency 0 - 8 8 8 - 16 7 16 - 24 16 24 - 32 24 32 - 40 15 40 - 4...

Q: An certain brand of upright freezer is available in three different rated capacities: 16 ft, 18 ft, ...

A: Ans#- Given pmf of X     x 16 18 20 P(x) 0.1 0.3 0.6 (a) Compute E(x), E(x2), V(x)

Q: For the data shown, answer the questions. Round to 2 decimal places. 5.9 2.1 4.4 25.1 4.3 1.5 28.2 5...

A: x x2 5.9 34.81 2.1 4.41 4.4 19.36 25.1 630.01 4.3 18.49 1.5 2.25 28.2 795.24 5.4 29....

Q: EXAMPLE 5. Calculate Quartile Deviation and its Coefficient. July Aug. Sept. Oct. 145 Nov. Dec. Jan....

A:

Q: Calculate mean from the following series and apply the iers accuracy check. Class Interval Frequency...

A: We know that  Mean = sum of all observations/total number of observations 

Q: The probability that an international flight leaving the United States is delayed in departing (even...

A:

Q: A company launches an advertising campaign of its new product on TV, radio and in print media in an ...

A:

Q: For the following data obtain (i) mean, (ii) median, (iii) mean deviation from median, and (iv) the ...

A:

Q: You have the blow metrics for a model: TP = 40, TN = 45, FP = 7, FN = 8. The cost associated with mo...

A: The given metrics for the model are shown belowTPFPFNTN=407845 The cost associated with the model ar...

Q: The average marks obtained in the annual examination is 65 with the S.D. of 10. The top 5% of the st...

A:

Q: The first four moments of a distribution about the origin are 1, 4, 10 and 46 respectively. Obtain t...

A:

Q: According to a poll, about 18% of adults in a country bet on professional sports. Data indicates tha...

A: It is given that the probability of adults in a country bet on professional sports is 0.18 and the p...

Q: 4. The following statements indicates the use of inferential statistics EXCEPT 4 A. A manufacturer o...

A: Ans#4- The following statements indicate the use of inferential statistics EXCEPT

Q: In order to get toys in its stores by October, Specialty places one-time orders with its manufacture...

A:

Q: (a) Compute the mean and median percentage of hourly employees being laid off at these stores. mean ...

A: Given that  The data are 56 57 45 44 45 57 61 63 58 46 37 39 51 70 66   n=15 Note: According t...

Q: The life-time in hours of a certain electrical equipment has the normal distribution with mean - 80 ...

A: Given that: Mean (m) = 80 standard deviation (s) = 16

Q: Q. 4. Fit a straight line from the following data Years : 1989 1990 1991 1992 Sales (1000) : 12 15 1...

A: Given a data on years and sales, we have to fit a straight line from the given data. 

Q: If X is a Poisson variable such that P(X=2)=9P(X = 4) + 90P(X=6), find the mean and variance of X.

A:

Q: Q5. Find the conditional probability Pr(B|A) Prob. Venn Diagram Incomplete Carroll diagram A 0.3 0.1...

A: