A bag contains 5 red smileys, 6 yellow smileys and 3 green smileys. If two smileys are picked at random, what is the probability that both are red or both are green in colour?

Q: Example 1 Suppose we conduct a simple statistical experiment. We flip a coin one time. The coin flip…

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Q: The probability that a bowler bowled a ball from a point will hit by the batsman is 14. Three such…

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Q: Problem 2: An item is made in lots of 200 each. The lots are given 100% inspection. The record sheet…

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Q: There are n urns and each urn contains a white and b red balls. A ball is chosen from Urn 1 and put…

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Q: An expert hits a target 95% of the time. What is the probability that the expert will miss the…

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Q: 8.40 (EX) Magnets for pain relief 1/5: A randomized, double-blind experiment studied whether…

A: Given that : n1=29 n2=21

Q: Problem 4 Samples of eastern white pine lumber were collected (found in the spreadsheet), and a…

A: The question is about paired t test Given :   To find : To test the claim that the modulus…

Q: Groups of adults are randomly selected and arranged in groups of three. The random variable x is the…

A: Formula Used: Mean μ = E(X) = ∑X·P(X) Standard deviation σ = EX2-EX2 Where, EX2 = X2·P(X)

Q: Find the mean of the following probability distribution? X P(x) 0.4386 0.3276 0.0299 0.0192 0.1847 0…

A: Given X.                     P(x)  0                     0.4386   1                     0.3276   2…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: Confidence interval is used to determine the range where the true parameter lies. It can be…

Q: Question * A prospective cohort study was conducted to investigate the effects of Hormone…

A: Introduction: It is required to calculate the rate ratio, and identify the suitable measure of…

Q: Below you are given a partial Excel output based on a sample of 8 observations. ANOVA

A: From the given information, There are 8 observations. Number of independent variables is 2. Let n=8…

Q: The age of children in kindergarten on the first day of school is uniformly distributed between 4.85…

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Q: Many universities use a student's ACT score to help with admission decisions as well as placement…

A: From given data we have : ACT score 18 20 22 24 26 28 30 GPA 15 2 3 3.5 4 4.5 5.5

Q: Suppose we have a bowl with 10 marbles - 2 red marbles, 3 green marbles, and 5 blue marbles. We…

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Q: Researchers were interested in assessing the effects of a new treatment on seasonal affective…

A: Given: The independent variable is subject. The dependent variables are 0 weeks, 2 weeks and 4…

Q: A company claims that the mean weight per apple they ship is 120 grams with a standard deviation of…

A: From the provided information, Population standard deviation (σ) = 12 Sample mean (x̄) = 122.5…

Q: Why is shoe sizes of that child are between 5 to 10 is considered as a discrete quantitative…

A: A country's population, a person shoe size. Or a car speed all are quantitative variables.

Q: Suppose we have a bowl with 10 marbles - 2 red marbles, 3 green marbles, and 5 blue marbles. We…

A: Total number of marbles are n= 10  number of green marbles are n(G)= 3 and number of blue marbles…

Q: n step two, where did you get the 11? I got the twelve, but I don't have the 11.

A: x f fx fx2 210 3 630 132300 370 4 1480 547600 530 3 1590 842700 740 1 740 547600 1140 1…

Q: Question 16 > A population of values has a normal distribution with μ sample of size n = 200. = 81…

A: Given  Population mean μ=81, standard deviations σ=53.8, sample size n=200

Q: Suppose 244 subjects are treated with a drug that is used to treat pain and 55 of them developed…

A: Form given data we have : n=244 x=55 p=0.2 sample proportion p^=xn=55244=0.2254

Q: Listed in the accompanying table are numbers of hospital admissions in one region due to traffic…

A: From the given information, The claim is fewer hospital admissions due to traffic accidents occur on…

Q: Trucks arrive at a receiving dock in a Poisson fashion at a mean rate of 2 per hour. The trucks can…

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Q: A and B play the following game. They throw alternatively a pair of dice. Whosoever gets sum of the…

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Q: Suppose we conduct a simple statistical experiment. We flip a coin one time. The coin flip can have…

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Q: neve through a cer marked as sp You've heard that at ist 65% of the email you You suspect this is…

A: given data, claim: p≥0.65n=57x=29p^=xn=2957=0.5088

Q: A manufacturer of gunpowder has developed a new powder, which was tested in eight shells. The…

A: Given: n = 8 Confidence level = 95% Formula Used: Confidence Interval = X ± t*sn

Q: 14. You would like to know how effective a diet program is at helping people lose weight. 18…

A: Given that you would like to know how effective a diet program is at helping people lose weight. 18…

Q: The housing market has recovered slowly from the economic crisis of 2008. Recently, in one large…

A: given data sample size (n) = 50sample mean ( x¯ ) = 8652sample standard deviatio (s) = 200399% ci…

Q: If n=480 and X = 384, to construct a 90% confidence interval, you need to use which one of the…

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Q: Regression analysis was applied between sales data (y in $1,000s) and advertising data (x in $100s)…

A: Solution: Given information: n= 12 observation  k= 1 independent variable SSR= 60 sum of square of…

Q: Silicone implant augmentation rhinoplasty is used to correct congenital nose deformities. The…

A: From given data we have : The sample size, n=17 The sample mean failure strain, x=24 The sample…

Q: is in the groove and makes both free throws. makes the first and then misses the second. misses the…

A: Given: Percentage of making free throws is 87% p=0.87 therefore q=1-p=1-0.87=0.13

Q: The Highway Safety Department wants to study the driving habits of individuals. A sample of 81 cars…

A: Given information Sample size (n) = 81 Sample mean x̅ = 67 mph Standard deviation (s) = 9 mph…

Q: iven forecast errors of -5, -10, and +15, the MAPE is: Othere isn't enough data to calculate this…

A: Given Given forecast errors of -5, -10, and +15,

Q: A sleep disorder specialist wants to test the effectiveness of a new drug that is reported to…

A: From given data we have : n=16 x y d 3.3 5.4 2.1 1.9 4.3 2.4 1.8 3.9 2.1 2.3 3.8 1.5…

Q: 13.4 pts - The histogram below shows the distribution of a population with mean μ = 4 and standard…

A: Given that mean is 4 and the standard deviation is 2.828.

Q: We define the ratio random variable of two random variables X and Y is Z = . (a) If X~ Binomial (3,…

A: Given that the ratio random variable of two random variables X and Y is Z=XY.

Q: At the campus-wide meeting, the president of a community college claims that more than 51% of all…

A: Solution-: Given: n=128,x=74,P0=0.51,α=0.01 We want to the president's claim at the 0.01 level of…

Q: R3.25. Timing In August 2011, a Sodahead.com voluntary response poll asked site visitors, "Obama is…

A: Bias is the error that occur while collecting data or solving the data through intentionally or…

Q: The overall distance traveled by a golf ball is tested by hitting the ball with Iron Byron, a…

A: Given data:

Q: Refer to Exhibit 15-16. The estimated regression equation is,

A: From the given output, Intercept is 0.11 Coefficient of x1 is 6.89 Coefficient of x2 is 2.28.

Q: hown below is a portion of a computer output for regression analysis relating y (dependent variable)…

A: Solution:  Given information:  b1=-0.566  slope ofthe regression equation S.E(b1)= 0.301  standard…

Q: A study investigated ways to prevent staph infections in surgery patients. The researchers examined…

A: Given that, x=86,n=100 The sample proportion is, p^=xn  =86100  =0.86

Q: A binomial probability experiment is conducted with the given parameters. Compute the probability of…

A: Solution-: Given: n=40,p=0.05,x=2 We want to find P(2)=?

Q: We know a closed form solution of =adt + bdWe, for a, b E R is Y₁ Y Yo exp ((a-b²/2) t+bW₁) =

A: From the given information, The closed form of dYtYt=adt+bdWt is, Yt=Y0ea-b22t+bWt

Q: A customer wants to estimate the average delivery time of a pizza from the local pizza parlor. Over…

A: From given data we have : n=29,x=23.34,s=5.603

Q: se the sample data and confidence level given below to complete parts​ (a) through​ (d).   A drug is…

A: given data, x=118n=4409p^=xn  =1184409   =0.0268CI=0.90

Q: Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using…

A: given data 484 favor397 oppose116 unsure------exclude this unsure peopleclim : p =0.5n = 484+397=…