b) 1000 students were graded according to their IQ and Economic condition. Test whether  there is any association between them or no at 5% level of significance. (Table value=  3.841) Economic  condition IQ of the Student High Low Total Rich 100 300 400 Poor 350 250 600 Total 450 550 1000

Q: |x≤-a. Determine (a) the probability that X will be on the interval (—a/2, a/2), (b) the quantile…

A: As per bartlby guidelines we can answer only first three subpart and rest can be reposted

Q: The lengths of adult males' hands are normally distributed with mean 195 mm and standard deviation…

A: "Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: he equation of the linear regression line is: y = + & (Please show your answers to two decimal…

A: (f)   Use EXCEL to determine the regression equation.   EXCEL procedure:   Go to EXCEL Go to…

Q: A radio device consists of 1000 electronic elements. The probability of nonoperation for one element…

A: GivenNo.of electronic elements(n)=1000probability of nonoperation for one element during one…

Q: The joint probability density function for X and Y is given below. - { (x² + y) 0 f(x, y) = 5 Mean:…

A:

Q: Composite scores on the American College Testing (ACT) college entrance exam follow the normal…

A: The following information has been given: Let X is a random variable shows the composite scores on…

Q: GIVEN: POPULATION MEAN: 94.60 AND POPULATION STANDARD DEVIATION: 2.3324 What is the percentage that…

A:

Q: Let X and Y have the following joint probability distribution: 1 2 3 1 .1 .1 .1 2 .1 .2 .1 3 0 .3 0

A:

Q: 5.11 A Nielsen study indicates that 18- to 34-year olds spend a mean of 93 minutes watching video on…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Suppose you conduct a hypothesis test based on a sample where the sample size is n = 50, and arrive…

A: The p-value is 0.08 for the sample size of 50.

Q: The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally…

A: "Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: Out of 6000 graduates in a town 600 are females out of 1200 graduate employ 100 are females. Use z…

A:

Q: The Student Assistantship Committee head is examining the Grade Point Average (GPA) of the student…

A: The degrees of freedom is 20-1=19. The null and alternative hypotheses are H0: µ =2.43 H1: µ…

Q: The heights of adult men in America are normally distributed, with a mean of 69.1 inches and a…

A: Given that.   X~N( μ , ?^2 )   Z-score =( x - μ )/?

Q: Example 16.1 A lot of n items contains m defective items. A sample of r items is drawn from the lot…

A: A lot of n items contains m defective items. A sample of r items is drawn from a lot for quality…

Q: Both sets of values have an average of 13. Is set A's standard deviation smaller, larger or about…

A: Average of set A and B is 13 Set A: 1 2 3 23 24 25 Set B: 9 10 11 14 16 18

Q: A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made…

A: Given data: n = 603 X = 142 95% Confidence interval= (0.2016, 0.2694)

Q: The figure below shows a randomization distribution based on 1000 simulated samples for hypotheses…

A: Solution

Q: Suppose X is a continuous random variable with proposed pdf f(x)=cx for 0<x<2 a) Determine the value…

A:

Q: 4.35. A randomly selected sample of bicycle helmets was tested for impact resistance. Given the data…

A: 4.35) Given: Sample size n=100 Sample mean x¯=276 Sample standard deviation s=15 Confidence level is…

Q: The equation of the linear regression line is: y=? +?x (Please show your answers to two decimal…

A: Given: Sample size n = 10 Formula Used: The regression equation: Y = a + bX b = n∑XY-∑X∑Yn∑X2-∑X2 a…

Q: A cafe´ serves four types of bread roll, and each roll contains one of four fillings. The…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Suppose that the amount of time per day that American adults spend on their mobile devices is…

A: From the provided information, Mean (µ) = 229 Standard deviation (σ) = 57

Q: In a certain city district, the need for money to buy drugs is stated as the reason for 55% of all…

A: We have, the probability of success p=0.55. The number of trials are n=5

Q: The number of customers arriving per hour at a certain automobile service facility is assumed to…

A:

Q: from Coca-cola company on twitter(@Cocacola. Using your selected tools, get data of company's…

A: As the question contains many sub-parts. According to the company guidelines, first 3 subparts are…

Q: The following data is used in correlation analysis. X- {10, 11, 5, 7, 8, 9} and Y- {12, 14, 9,9 10,…

A: As per our guidelines we are suppose to answer only question. X Y X.Y X2 Y2 10 12 120 100 144…

Q: The null and alternative hypotheses for a test are given, as well as some information about the…

A: Solution

Q: . If the trendline contains all the points in the scatterplot and the line points to the right, we…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: If n=12, ¯xx¯(x-bar)=49, and s=2, find the margin of error at a 90% confidence level Give your…

A: Given n=12 Sample standard deviation=s=2 Confidence interval=90%

Q: (a) The p-value for p^=0.23p^=0.23 is closest to: 0.006 or 0.30 ? Choose the answer from the menu…

A: Introduction: It is required to identify the numerical value to which the p-value is the closest,…

Q: 4.15. A process is in control at X-double bar = 100, R- bar=7.3 with n=4. If the process level…

A: 4.15) Given: A process is in control at X¯¯=100,  R¯=7.3 with n=4. If the process level shifts to…

Q: In a study of variables that affect productivity in the retail grocery trade, W.S. Good uses value…

A: Regression equation is used to predict the future value. It explains the relationship between the…

Q: The crab spider. Thomisus spectabilis, sits on flowers and preys upon visiting honeybees. Do…

A: Given Information: Number of trials n=33 In x=23 trials of the total trials, the bees picked the…

Q: resent the commute time A worker. Round all answers to 4 decimal places where possible. the…

A: Given Mean=29 Standard deviation=14

Q: The position of a point A is defined from a point of observa- tion O by distance OA = D, and the…

A:

Q: A computer manufacturer estimates that its line of minicomputers has, on average, 8.7 days of…

A: The hypothesized mean is μ0=8.7. The sample size is n=7. The sample mean is x¯=5.1. The sample…

Q: Which of the following indicates an out-of- control condition? a. A trend of 5 points in an upward…

A: Option b is the correct answer.

Q: Show that the following function is a valid probability mass function of the random variable X.…

A: A function f(x) is said to be valid PMF if it satisfy following properties i) 0 ≤ p(x) ≤ 1 ii) ∑p(x)…

Q: An experiment is conducted to determine the relationship between the amount of a certain drug in the…

A:

Q: Multiple-choice questions each have five possible answers (a, b, c, d, e)​,one of which is correct.…

A: The number of possible answers for each question is 5.

Q: Question Listed below are self-reported heights and measured heights (in inches). Assume that the…

A:

Q: Determine (a) the probability that X will be on the interval (-a/2, a/2), (b) the quantile x0.75,…

A: As per bartlby guidelines we can answer only first three subpart and rest can be reposted

Q: In a recent poll, 500 people were asked if they liked dogs, and 72% said they did. Find the margin…

A:

Q: Part: 3/6 Part 4 of 6 (d) Find the probability that the proportion of the sampled adults who drink…

A:

Q: If a new car has, on average, 25 minor defects, what is the probability that the next new car will…

A: ANS GIVEN                 average(λ) =25 minor                      find p(x=25)  = ?

Q: Example 16.1 A lot of n items contains m defective items. A sample of r items is drawn from the lot…

A:

Q: A barangay official claims that at least 95% of theresidents in his area have mobile phones. To test…

A: The question is about hypo. testing Given : No. of randomly selected residents ( n ) = 150 No. of…

Q: Assume that a sample is used to estimate a population mean μ. Find the margin of error M.E. that…

A: A sample of size 24 with mean 52.2 and standard deviation 16.4 The confidence level is 90%.…

Q: correlation between the two variables. Use a significance level of Internet Users 66.5 76.6 80.1…

A: From the above data  The test statistic t=2.63 And  P value =0.058