A box contains 13 identical cards, 4 of the cards are blue and the rest are red. Two cards are randomly selected (WITHOUT replacement). Calculate the probability that both cards are blue.

Q: The test statistic of z=2.98 is obtained when testing the claim that p>0.26. This is a right-tailed…

A: Givenclaim is that p>0.26The test is right tailed testTest statistic(z)=2.98significance…

Q: The average dues paid by students at state universities across the country were $2236 per student…

A: The hypotheses for the test are given below. Null hypothesis: H0: µ = 2236  Alternative hypothesis:…

Q: A random sample of size n=613n=613 from a population whose parameter is p=0.31p=0.31. What is the…

A:

Q: Find the Pearson r(correlation coefficient value r) for the correlation between the number of hours…

A: We have given that  size N=10

Q: Here is a distribution of quiz scores for a statistics course: 87, 91, 74, 73, 80, 84, 68, 75 What…

A: according to given data we have to find out the range for the given datadata,87,91,74,73,80,84,68,75

Q: The time to complete the Advanced Placement (AP) Statistics Exam in previous years is normally…

A: Using t test statistic because the sample is less than 30 and population standard deviation is…

Q: A Bloomberg Businessweek subscriber study asked, "In the past 12 months, when traveling for…

A:

Q: Null Hypothesis: D(INF) has a unit root Exogenous: Constant Bandwidth: 28 (Newey-West automatic)…

A: From the first table, we see that the p-value of Augmented Dickey Fuller test is 0.0189 which is…

Q: The average fees paid by students at state universities across the country were $2236 per student…

A: given data  n = 500 x¯ = 2350σ = 724α= 0.05H0 : μ= 2236Ha : μ≠ 2236

Q: 2. Stationary Distributions Recall that a stationary distribution of a Markov chain is a probability…

A:

Q: Part 1 of 3: The age when smokers first start from previous studies is normally distributed with a…

A: Solution-: Given:\bar{x}=14.3,n=32, \sigma=1.9,c=0.95 We want to find, (Part 1 of 3) The 3-decimal…

Q: In 2008, 46% of business owners gave a holiday gift to their employees. A 2009 survey of business…

A: Given that Sample size (n)=60 Sample proportion=35% =0.35 Population proportion=46%=0.46 We have to…

Q: Part 1 of 3: Insurance companies are interested in knowing the population percent of drivers who…

A:

Q: Part 1 of 3  A researcher was investigating the size of math departments in Texas colleges. She…

A: Part 1: Suppose that µ is the population mean size of math departments in Texas colleges.

Q: In 1998, a paper by a researcher named Wakefield appear Lancet, suggesting an association between…

A: Convenience sampling is a non-probability sampling and the data collected in this method by the…

Q: IS IT REASONABLE TO ASSUME THIS SAMPLE CAME FROM A NORMAL POPULATION?

A: we need to answer, if it is reasonable to assume the given sample came from a normal population.

Q: The probability that an individual is left-handed is 0.140. In a class of 20 students, what is the…

A: Let X: number of left handersX has binomial distribution.X~binomial(n,p)where number of trials(n)=…

Q: A population of values has a normal distribution with μ = 232.6 and σ = 12.2. You intend to draw…

A: given data  n = 84 μ = 232.6σ = 12.2mean and sd of sample mean = ?

Q: Find the sample size needed to estimate the mean age of movie patrons such that it can be said with…

A: given data,CI=0.98E=1σ=19.6n=?

Q: The mean work week for engineers in a start-up company is believed to be about 59 hours. A newly…

A: The test is to check whether the mean work week for engineers in a start-up company is 59 hours or…

Q: The mean of the values 2, 3, 4, 6, 9, 10, rounded appropriately, is: da 8.67 Ob.8.666666667 0087 Od…

A: Given values is 2,3,4,6,9,10

Q: Claim: More than 4.9% of homes have only a landline telephone and no wireless phone. Sample data: A…

A: claim : more than 4.9% of home have only a landline telephone and no wireless phone. sample size(n)…

Q: Consider hourly wages, letting x be an individual's wage and assuming that wages in the population…

A: given data continuous uniform distribution between 11 and 36 X~U(11,36)

Q: A professor has a class with four recitation groups.  Each section has 7 students.  Determine…

A: Given A professor has a class with four recitation groups.  Each section has 7 students. We should…

Q: If n=14, (x-bar)=40, and s=10, construct a confidence interval at a 98% confidence level. Assume the…

A: given data,n=14x¯=40s=10CI=0.98here population standard deviation is unklwon so we use t-…

Q: The mass of a species of mouse commonly found in houses is normally distributed with a mean of 19.3…

A: GIVEN DATA normal distribution μ= 19.3σ = 0.11

Q: In 2015, Addison Group and Kelton surveyed the work preferences and attitudes of 1006 working adults…

A: Data is given for observed frequency : We have to calculate chi-square value :

Q: A Gallup poll asked 18 teenagers aged 13 to 17, "Typically, how many hours per week do you spend…

A: Given information Sample size (n) = 18 Sample mean x̅ = 30 hours Standard deviation (s) = 9…

Q: Find the area of the shaded region under the standard normal distribution between the given z-…

A: Given that  Z has standard normal distribution  Find  P(-0.75 < Z < 1.19) = ?

Q: Suppose an electric-vehicle manufacturing company estimates that a driver who commutes 50 miles per…

A:

Q: The random variable x represents the number of boys in a family of three children. Assuming that…

A: Answer; - Given a probability distribution                 x P(x) x*P(x) x^2*P(x) 0 0.125 0 0…

Q: A total of 70% of the customers of a fast food chain order a hamburger, French fries, and a drink.…

A: It is given that  p = 70% = 0.70 n = 15 The pmf of Binomial distribution is: P( X = x ) =…

Q: he data to the right represent the top speed (in kilometers per hour) of Il the players (except…

A:

Q: Refer to the data set of 20 randomly selected presidents given below. Treat the data as a sample and…

A: Given that            sample size, n=20 Here, we have to construct a​ 95% confidence interval…

Q: A)For n=56​, p=0.5​, and X=30, use the binomial probability formula to find​ P(X).     B)Can the…

A: It is given that  X follows Binomial(n = 56, p = 0.5), then the probability function  P(X = x) =…

Q: Calculate the value of the sample Standard deviation Round to 1" Clecimal Place -13,-13, 2, 2, 13,…

A: x x2 -13 169 -13 169 -13 169 -9 81 2 4 2 4 2 4     ∑x = -42…

Q: Make a scatter plot. (Carefully choose units on both axes; no need to start at 0, but make them not…

A:

Q: In 2016 Americans owed $1.3 trillion in student loans. The default rates of college student loans…

A: Given that  p=11.2%=0.112 Sample size n =215

Q: Claim: The standard deviation of pulse rates of adult males is more than 10 bpm. For a random sample…

A: claim :the stanadard deviation of pulse rates of adults males is more than 10 bpm n=158s=10.9 bpmwe…

Q: If n=23, x=40, and s=5, find the margin of error at a 80% confidence level using the critical value…

A: Here, x=40, s=5, n=23, and CL=0.80. The value of α is, α=1-CL  =1-0.80  =0.20

Q: An Internet media and market research firm measured the amount of time an individual spends viewing…

A: Given: n=40 Class:                     Frequency: 0-20                            13 20-40…

Q: Determine the original set of data. 1012 2 1 447 8 3 3 55 57 8 401 Legend: 110 represents 10 The…

A: We have to set data from stem and leaf plot.

Q: cereal. The true mean weight of the contents of its cereal packages is 20 ounces, and the standard…

A: Given that.   X~N( μ , ?)   μ=20    , ?=0.6   Z-score =( x - μ )/?

Q: Data on the weights (lb) of the contents of cans of diet soda versus the contents of cans of the…

A:

Q: A binomial probability experiment is conducted with 15 independent trials with 20% probability of…

A: given data  P(success) = p = 0.20 sample size(n) = 15 x = no. of successes.  P(x=X) = nCxpxqn-x…

Q: The concerns about the impact of technology on our lives are growing. There have been recent…

A: Probability= favorable/total Total = 210 28% of 210 = 210*28/100  = 58.8 ≈ 59

Q: A polling company wants to test the time (in minutes) required to run two different versions of a…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: In systematic sampling, every nth member of the population is taken from a list and included in the…

A: It is given that the statement about to the systematic sampling.

Q: 8 Suppose the mean income of Firms in the industry for a year is 95 million dollars with a Standard…

A: given data, μ=95 millon dollars σ=5  millon dollars normal distribution probability that a randmoly…

Q: Small sample t-distribution hypothesis testing An insurance company is informed that its mean cost…

A: