8. x -3 -1 1 3 5 P(X = x) 0.17 0.28 0.15 0.27 0.13
Q: a. What is the standard error of the mean in men? What is it in women? Assume that the sampling was…
A: n1 = 4620 n2 = 6228 x1 = 3.8 x2 = 2.4 s1 = 6.7 s2 = 4.6
Q: A test of 100 motor is done to determine the defective motors. The probability that a motor is…
A: Ugghh
Q: . For a standard normal random variable, find the point in the distribution in which 10% of the…
A:
Q: a0 The following five values are a sample:
A: Table that shows the necessary calculations: x x−¯x (x−¯x)2 11 3 9 6 -2 4 10 2 4 6…
Q: A bag contains seven balls numbered 1, 2, 2, 3, 3, 3, and 4. Let X be the random variable…
A: Given : A bag contains 7 balls numbered 1 2 2 3 3 3 4
Q: The homogeneity of variance assumption requires that: A. the sample variance is equal to the…
A: The assumption of homogeneity of variance is that the variance within each of the populations is…
Q: Consider a population consisting of value (1, 3, 5) a. Compute the variance of the sampling…
A: Population : 1 , 3 , 5 n = sample size = 2 with replacement
Q: 9 - A survey conducted in a city revealed that 25% of the people do sports. 8 people are randomly…
A: We have given that Sample size n=8 , p=25%=0.25 and q=1-p=1-0.25=.75
Q: Suppose a normally distributed random variable x has a mean of 100 and P(x < 90) = 0.30. What is the…
A: Given : Mean ,u = 100 P(x < 90) = 0.30 where x = 90
Q: . About 5% of a store’s customers respond to advertised sales. The other 95% shop when they have…
A: Given: P(Do shopping due to promotional advertising)=p=5%=0.05 Number of customers (n) =21
Q: The weight of a jar of mild salsa has a standard deviationof 5 gm and the weight of a jar of hot…
A: Let X denotes the weight of a jar of mild salsa. SD(X) =5. Let Y denotes the weight of a jar of hot…
Q: 2. A department store receives an average of 5 returned items per day. The probability that a…
A: A discrete random variable X is said to follow Poisson distribution with parameter , if its…
Q: 10. X 0 15 30 45 60 P(X=x) 0.24 0.46 0.13 0.11 0.06
A: We have given a probability mass function of a random variable as follows:…
Q: Let the random variable X represent the profit made on a randomly selected day by a certain store.…
A:
Q: THE NUMBER OF CUSTOMERS SERVICED BY 3 PARLORS. Number of Customers(X) Spa A PCX) 0.37 Spa B POX) 0.3…
A: Given : The no. of customers serviced by 3 parlors Here find the population variance of Spa C So ,…
Q: Since x is a Poisson-distributed random variable with a mean of 1.8, what is its standard deviation?…
A: For a Poisson-distributed random variable X, the mean of X is equal to the variance of X.
Q: X and Y are independent random variables with expected values and standard deviations as shown. X Y…
A: Given that E(x) = 80 E(Y)= 12 Sd(x) = 12 Sd(Y)= 3 We have to find Sd(x-y)
Q: A sample of n= 4 scores has SS = 60. What is the variance for this sample? a) 15 b) 20 c) 60 d)…
A: From the given information, n = 4 SS = 60 The objective is to find the variance for this sample.…
Q: Since x is a Binomial random variable with a mean of 1.8 and a probability of success of 0.6, what…
A:
Q: Let X denote the number of luxury cars sold in a given day at a certain car dealership. X…
A: Here the given table is we have to find the variance, standard deviation and mean
Q: A survey study conducted in a city revealed that 25% of the population do sports. 8 people are…
A: The random variable sports follows binomial distribution. We have to use normal distribution as an…
Q: 2. Determine whether the value is a discrete random variable, continuous random variable, or not a…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: A.) One sample (n1) has SS = 70 and a second sample (n2) has SS = 42. 1. Find the sample variance…
A: (1) Obtain the value of sample variance for n1. The value of sample variance for n1 is obtained…
Q: A one-way analysis of variances produces dftotal = 39 and dfwithin = 36. For this analysis, what is…
A: A one-way analysis of variances produces dftotal = 39 and dfwithin = 36. For this analysis, what is…
Q: 2. A department store receives an average of 5 returned items per day. The probability that a…
A: A discrete random variable X is said to follow Poisson distribution with parameter λλ, if its…
Q: A simple analysis of variance is used to study participants who are tested: A) Twice or more B) Only…
A: The correct option is B. Only once
Q: b. It was determined that, in his one day international cricket career, West-Indian batsman Carl…
A: An average of 3 boundaries per matchLet "x" be that Hooper will hit boundariesx~Poisson()P(X=x)=
Q: Find the a) mean, b) standard deviation and c) variance of the given probability distribution. 1)…
A: Solution-: We have given table: x P(x) 3 0.14 6 0.05 9 0.36 12 0.35 15 0.10 We…
Q: Determine whether the value is a discrete random variable, continuous random variable, or not a…
A:
Q: X and Y are independent random variables with expected values and standard deviations as shown. X Y…
A: From the provided information, X and Y are independent random variables with expected values and…
Q: For the question 9 & 10 -Referring to the following table: X P(x) 5 0.1 0.3 0.2 0.4 10 15 20 9) What…
A: Given data is x P(x) 5 0.1 10 0.3 15 0.2 20 0.4
Q: P(X) a) Mean. b) Variance. c) p(x + 1). 0.20
A: Answer:- Given probability distribution table- x 0 1 2 3 4 5 P(x) 0.20 0.25 0.15 0.10 0.20…
Q: e contains the amount that a sample of nine customers spent for lunch ($) at a fast-food restaurant:…
A: Observation: XX X^2X2 1 4.20 17.64 2 5.03 25.3009 3 5.86 34.3396 4 6.45 41.6025 5 7.38…
Q: 1. X: Number of women among 10 newly hired teachers 2. Y: Height (in inches) of a randomly selected…
A: According to the answering guidelines, we can answer only three subparts of a question and the rest…
Q: Princess, the purchasing officer of a large manufacturing company, inspects ten items selected at…
A: From the provided information, Sample size (n) = 10 A lot contains 50 items from which 5 items are…
Q: 2. A department store receives an average of 5 returned items per day. The probability that a…
A: A discrete random variable X is said to follow Poisson distribution with parameter , if its…
Q: YES or NO 1. Are the data in Kruskal-Wallis h test: a) continuous b) normal c) accepts outliers…
A: We have given that the multiple questions. Note: According to Bartleby expert guidelines, we can…
Q: X -6 -1 0 8 P(X= x) 0.21 0.25 0.26 0.28
A: Given information-We have given the probability distribution for X.Value of XProbability…
Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…
A: Given Data and calculation is shown below
Q: There are 3 students that make up the total population of Summer Calculus students at ACM. Their…
A: The population data is X = 80 , 55 , 57 n=3 a) What is the mean of this population X= ∑xn X=…
Q: Greg actually has a GPA of 4.60 What is the residual score? A) 2.59 B) -4.06 C) -3.06 D) 1.4
A: The regression equation is y^ = 0.29*x+2.6 Correlation coefficients between social contacts and GPA…
Q: ES or NO 1. Are the data in one-sample t-test: a) continuous b) normal c) accepts outliers d)…
A:
Q: Of all customers purchasing automatic garage-door openers, 57% purchase a chain-driven model. Let X…
A:
Find the variance using the provided probability
distribution of random variable X.
A) 6.9676
B) 2.6396
C) 4.5727
D) 5.8776
E) 8.0278
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 17 images
- Determine whether the value is a discrete random variable, continuous random variable, or not a random variable. a. The time required to download a file from the Internet b. The height of a randomly selected giraffe c. The eye color of people on commercial aircraft flights d. The number of free-throw attempts before the first shot is made e. The amount of rain in City B during April f. The number of hits to a website in a day a. Is the time required to download a file from the Internet a discrete random variable, a continuous random variable, or not a random variable? A. It is a discrete random variable. B. It is a continuous random variable. C. It is not a random variable. b. Is the height of a randomly selected giraffe a discrete random variable, a continuous random variable, or not a random variable? A. It is a discrete random variable. B. It is a continuous random variable. C. It is not a random variable c. Is the eye color of people on commercial aircraft flights a discrete random…A univariate, one-way analysis of variance always involves: b) Only one level of the independent variable c) Only one dependent variable f) a & c a) Only one independent variable e) a & b d) Only one groupA. Classify each random variable as discrete or continuous. 1. X: Number of women among 20 newly hired teachers 2. Y: Height (in centimeters) of a 30 randomly selected adult males 3. Z: Number of car accidents among 8 selected cities 4. A: Amount of rainfall (in millimeters) in different cities in Metro Manila 5. B: Number of gifts received by 20 students during Christmas season
- 2.2 handwritten Answer letters f, g and hGenerate 10000 instances of a poisson (10) random variable and then compute the sample mean, sample variance, and sample standard deviation.In 1992, Canadians voted in a referendum on a new constitution. In the province of Quebec, 42.3% of those who voted were in favor of the new constitution. A random sample of 110 voters from the province was taken. Complete parts a through d below. What is the mean of the distribution of the sample proportion in favor of a new constitution? a) The mean of the distribution of the sample proportion in favor of a new constitution is b) what is the variance of the sample proportion? c) what is the standard error of the sample proportion? d) what is the probability that the sample proportion is more than 0.51?
- 32 - The random variable X, which shows the grades of the students in a class in the exam of the statistics course, has a normal distribution with a mean of 80 and a variance of 25. Which of the following is the lowest grade with a probability of 0.3015? a) 32.5 B) 55 NS) 82.5 D) 68 TO) 892. A department store receives an average of 5 returned items per day. The probability that a returned item has an available replacement is 0.65. [Hint: there are two separate distributions here.] d. e. f. Calculate the probability that there are 4 returned items and none has available replacements in a certain day. Calculate the variance and the mean of the returned items. Calculate the variance and the mean of the replaced items. 2An analysis of variance produce SStotal=100 and SSwithintreatments=40. For this analysis, what is SSbetweentreatments? a)50 b)60 c)140 d)cannot be determined without additional information
- A population consists of 35% sixes and 65% fives. What will be the variance for the distribution of sample means for samples of size two selected from this population? a) 14.425 b) 0.2275 c) 0.11375 d) 28.85A variable y of a finite population has the frequency distribution shown in the table. Suppose a member is selected at random from the population and let Y denote the value of the variable y for the member obtained. Complete parts (a) through (d) below. y 3 4 6. f 1 1 11 7 a. Determine the probability distribution of the random variable Y. 3 y P(Y = y) (Type integers or decimals. Do not round.) b. Use random-variable notation to describe the events that Y takes on the value 5, a value less than 5, and a value of at least 5. The event that Y takes on the value 5 can be represented as The event that Y takes on a value less than 5 can be represented as The event that Y takes on a value of at least 5 can be represented as { }. c. Find P(Y = 5), P(Y 5). %3D P(Y = 5) = (Type an integer or a decimal. Do not round.) P(Y<5) = (Type an integer or a decimal. Do not round.) P(Y 2 5) = (Type an integer or a decimal. Do not round.) LO14) Xi -2 -1 0 1 Consider the following probability distribution. The variance is A) 1.14 B) 1.29 C) 1.65 D) 1.94 P(X = X₁) 0.2 0.1 0.3 0.4