Current Attempt in Progress State whether the process described is a discrete random variable, is a continuous random variable, or is not a random variable. Draw 11 cards from a deck and count the number of spades. O Discrete random variable Not a random variable O Continuous random variable Save for Later Last saved 1 second ago. Saved work will be auto-submitted on the due date. Auto- submission can take up to 10 minutes. Attempts: 0 of 1 used Submit Answer

Q: Claim: Fewer than 10.5% of homes have only a landline telephone and no wireless phone. a Express the…

A: The hypothesized proportion is 0.105.

Q: The values listed below are waiting times (in minutes) of customers at two different banks. At Bank…

A: The 99% confidence interval for the population standard deviation at Bank A is obtained below as…

Q: Do political science classes require less writing than history classes? The 58 randomly selected…

A: This study examines the differences in the amount of essay writing required for political science…

Q: A personnel manager has found that, historically, the scores on aptitude tests given to applicants…

A: Answer  Sample size [n] = 11 Sample mean =[x] =70.76 Standard deviation =24.09 Confidence interval =…

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: Mean u = 20.5 Standard deviation o = 5.4 The test scores of four students random are 13, 23, 7, and…

Q: A magazine article conducted a survey of 807 people in Phoenix metro area and found that 45% of the…

A: Sample size (n) = 807 Population proportion (p) = 45% = 0.45 And  97% confidence interval is (41%,…

Q: L3. Let X₁,..., X10 P(E(X₁) > > 0.5). N(0, 1). Determine the probabilities P(X₁ > 0.5), P(X > 0.5)…

A: It is given that we have the random variables x1,x2,...,x10 which follow standard normal…

Q: 1. According to the World Bank, in September 2018, the countries of the European Union report that…

A: According to the World Bank, in September 2018, the countries of the European Union reported that…

Q: You may need to use the appropriate appendix table or technology to answer this question. A magazine…

A: Women Men Sample 150 170 Trust Recommendations Made on the social networking site 123 85

Q: One Quantitative Variable, Single Group Variable name: Temperature nput: Raw data nput data…

A: From the summary statistics, it is clear that the min value is 27, max is 36.

Q: A normal distribution is informally described as a probability distribution that is "bell-shaped"…

A: It is required to identify the correct graph having the bell-shaped characteristic of the normal…

Q: The weights of men are normally distributed with a mean of 76 kg and a standard deviation of 8 kg…

A: Answer: From the given data, X follows normal distribution mean (μ) = 76 Standard deviation (σ) = 8…

Q: Using standard normal table ar Excel function find the probability, Calculate the P(Z>0.65)…

A: Answer: From the given data, X follows normal distribution,

Q: Suppose the data represent the inches of rainfall in April for a certain city over the course of 20…

A: 0.44,2.14,3.39,5.12,0.62,2.48,3.82,5.42,0.99,2.68,4.28,5.56,1.43,2.86,4.57,5.92,1.68,3.26,4.95,6.19…

Q: 1. ANOVA is an omnibus test     True   False   2. OLS can be used for regression and ANOVA   True…

A: 1)- True -   ANOVA (Analysis of Variance) is an omnibus test, which means it is a statistical test…

Q: Find the width of each interval by subtracting the lower proportion from the upper​ proportion, and…

A: First we will calculate 95% confidence interval We have given thatn = 2029x = 645p̂ = x/n = 645/2029…

Q: For a multistate lottery, the following probability distribution represents the cash prizes of the…

A: The probability distribution for the cash prizes of the lottery is given below, x (cash prize, $)…

Q: Expert studying the rate of inflation for European states suspects a pattern. They feel that…

A: To test this hypothesis, the expert could use a two-sample t-test Null Hypothesis:  H0:μ1=μ2:(The…

Q: Exercise 20. Let X₁,..., Xn~ N(μ, o2) be independent, where u and o are unknown. In lectures we only…

A: To find an unbounded interval of the form [u, ∞) that contains the true mean u with 95% probability,…

Q: (a) A 95% confidence interval for the mean μ of a population is computed from a random sample and…

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

Q: b) Find P(Z < 0.5)

A: Let Z be the standard normal variable whose mean is 0 and sd is 1. To find the following…

Q: In a recent study on world happiness, participants were asked to evaluate their current lives on a…

A: Answer: From the given data, Let X: Happiness score X is normally distributed with Mean μ = 5.4…

Q: A hypothesis test is to be performed for a population mean with null hypothesis of H0: u=u0 . The…

A: The given test is two-tailed and the significance level is 0.02.

Q: L2. The probability that a baby is a girl is around 0.485. Using the result from (1) and the table…

A: Probability that a baby is a girl = 0.485  Population (p) = 0.485  From 100 random sample babies,…

Q: A researcher wishes to estimate, with 90% confidence, the population proportion of adults who eat…

A: Confidence interval = 90%  proportion = 0.5 Margin of error = 5% = 5/100 = 0.05

Q: 2. Suppose two researchers independently collect samples of 100 house prices and their floor areas.…

A: Let's consider the linear regression model: Yi = β0 + β1 * Xi + εi where Yi is the house price for…

Q: A simple random sample of 10 pages from a dictionary is obtained. The numbers of words defined on…

A: The given values are: n=10,x¯=62.2,s=15.8.

Q: MORE BENEFITS OF EATING ORGANIC Using specific data, we find a significant difference in the…

A: Given that, The p0 represents the proportion of fruit files alive at the end of the given time frame…

Q: A poll of 1164 teens aged 13 to 17 showed that 54% of them have made new friends online. Use a 0.10…

A: We have given that out of 1164 teens, 54% of them have made new friends online. Sample size n =1164…

Q: 14. Blood glucose levels for overweight patients have a mean of 120 with a standard deviation of 19.…

A: Population mean µ = 120 Population standard deviation σ = 19 Sample size n = 30 Sample mean x̅ =…

Q: If n = 515 and p- hat = 0.72, find the margin of error at a 99% confidence level

A: Answer: From the given data, Sample size(n) = 515 p^ = 0.72 99% confidence interval,

Q: Find the expected value for the following probability distribution: X 5 10 15 20…

A: Answer: From the given data, X     : 5     10   15   20 P(X) : 0.3  0.1  0.4  0.2

Q: Assume a significance level of a = 0.05 and Original claim: More than 46% of adults would erase all…

A: Original claim: More than 46% of adults would erase all of their personal information online if they…

Q: A recent survey 1090 employees found that 45% of them would lay off their bosses if they could,…

A: Answer: From the given data, Sample size(n) = 16 p = 45% = 0.45 X follows binomial distribution(n,p)

Q: Students estimated the length of one minute without reference to a watch or clock, and the times…

A: α=0.05 68 79 38 63 41 22 59 61 65 47 62 70 96 92 63

Q: In a 2008​ survey, people were asked their opinions on astrology​ - whether it was very​ scientific,…

A: We have given that people were asked their opinions on astrology​ - whether it was very​ scientific,…

Q: The average number of Toyota Fortuner cars that you can see on your drive to work is 25, What is the…

A: Answer: From the given data, X~Poisson distribution, λ = 25 X = 29

Q: Exercise 21. Assume that we have observed paired data 1,...,n and y₁,..., yn, and we want to…

A: The OLSE states that the error is minimized by minimizing the sum of squares of error term. S =…

Q: The assets (in billions of dollars) of the four wealthiest people in a particular country are 28,…

A: { 28,26,18,14 }  Sample size (n=2)  {(28,28),(28,26),(28,18),(28,14) (26,28),(26,26),(26,18),(26,14)…

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

A: sample size(n)=20 p=0.96 x=18 x~Binomial(n=20,p=0.96) P(X=x)=nx×px×(1-p)n-x    ; x=0,1,...,n

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Sample of size n=334 people with favourable number of people had flu x=31 Then the proportion of…

Q: A local grocery store wants to estimate the mean daily number of gallons of milk sold to customers.…

A: population standard deviation(σ)=2.4 sample size(n)=60 Mean(x)=15.9

Q: Make a graph of the distribution. Describe its overall shape and any outliers. The distribution is…

A: The number of legal immigrants in each state of the Mississippi River is given.

Q: The cost of weddings in the United States has skyrocketed in recent years. As a result, many couples…

A: From the provided information, Sample size (n) = 8 The claim is that the mean wedding cost is less…

Q: Determine whether the following graph can represent a variable with a normal distribution Explain…

A:

Q: Suppose x has a distribution with = 12 and a = 6. LAUSE SALT (a) If a random sample of size n-39 is…

A: Population mean μ=12, standard deviations σ=6

Q: Suppose we wanted to test the hypothesis that a control group of cancer patients (Group 1) would…

A: Group 1:  Mean = 76.5    Standard deviation=13.1     N =20  Group 2:  Mean = 72.1    Standard…

Q: What is the probability that 6 of the next 16 customers will order "extra crispy" chicken?

A: The manager of Los Pollos Hermanos, a fast-food fried chicken restaurant, wants to determine the…

Q: If administrators are selected randomly from the​ faculty, what is the approximate probability that…

A: Given that, No. of teachers = 2000 P(men) = p = 50% = 0.50 P(women) = q = 50% = 0.50 No. of…

Q: Using the same chart/data.   To the nearest​ million, how much should the grand prize be so that you…

A: For the lottery to be profitable, we need E(X) - 1 &gt; 0. If the cost of a lottery ticket is $1,…