Assume that P(A) = 0.7 and P(B) = 0.2. If A and B are independent, find P(A and B).

Q: f (x) = 4xc for 0 ≤ x ≤ 1 ; Find the constant c so that f (x) is a pdf of some random variable X,…

A:

Q: You are given the following data: (-7, -7, -6, -6, -4, -2, 4, 6, 9, 11, 12), and you wish to…

A: Data:X=−7,−7,−6,−6,−4,−2,4,6,9,11,12Number  Of bins = 5To find:Frequency of the second bin.

Q: If you tossed a coin 10 times and found 8 heads, and you're given the prior p(0) = 20, is the…

A: Given the problem:1. You've tossed a coin 10 times and observed 8 heads.2. The prior probability…

Q: MSNBC recently reported that the mean annual cost of auto insurance is 966 dollars. Assume the…

A: Mean()=966standard deviation()=275sample size(n)=94

Q: 53- The probability that a patient recovers from a rare blood disease is 0.4. If 15 people are known…

A: n = 15, p = 0.4Note: According to bartelbyquestion answer guidelines an expert can solve only one…

Q: Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X = the…

A: From the given informationlet X = the number of pairs of sneakers…

Q: What does "E(h(X))" mean, specifically relating to a discrete random variable? Oa. It's the standard…

A:

Q: Construct the null and alternative hypotheses for the following claims. a. "The school's mean GPA…

A: Solution:a.The given claim is “The school’s mean GPA differs from 2.50 GPA”.

Q: The table below displays data on defect rates at a compact disk (CD) pressing facility. The table…

A: Table No labeling error labeling error Total No content error 97.02%=0.97021.98%=0.01980.9900Content…

Q: 9. For a ten-year select-and-ultimate table, you are given: (a) (b) Calculate [30]. √60 9 l[30]+t =…

A: Given for a ten-year select-and-ultimate table:(a) (b)

Q: The table shows the earnings (in thousands of dollars) of a random sample of 11 people with…

A: For people with bachelor's degrees,Sample size, For people with associate's degrees, Sample size,…

Q: Is there a significant difference among the four (4) groups of Grade 7 learners with different time…

A: After entering the data as given in Excel: Go to Data>Data Analysis>Descriptive…

Q: Use a = 0.01 and conduct a goodness of fit test using 5 classes to see whether the following sample…

A: n=25number of intervals =5

Q: 1. If X ~ N(µ, σ²) and you have observed the data X₁, X2, X3, . Xn ... 9 Find the MLE for o². Show…

A: X~N(μ,σ2)

Q: The weekly earnings of shift supervisors in the glass industry follow a normal probability…

A: We have given thatMean() = 1000Standard deviations () = 100X ~ N (, )= N(1000,100)The z-score for…

Q: ber of customers who enter a supermarket each hour is normally distributed with a mean of 640 and a…

A: Suppose that the number of customers who enter a supermarket each hour is normally distributed with…

Q: The accompanying table gives the life expectancy for a certain demographic group in a certain region…

A: We will fit all the given models, and then use R2 to choose the best model. Greater the value of R2,…

Q: A jar contains 12 differently coloured balls. If you remove all the balls, one at a time, how many…

A: A jar contain 12 differently colored balls .

Q: A random sample for 11 exam scores produced the following (hours of study, grade) data values. Hours…

A: Data: X85312576734Y86.00745857.00055678478926480Sample size, n =11To finda. Covariance.b. The…

Q: what is the probability that the sample will contain Simon Fraser University?

A: There are total 28 universities are in above list.Suppose universities are being selected randomly…

Q: Random Phenomenon: It is generally accepted that the normal weight of newborn boys should be between…

A: The question is about random variable.Introduction :Random variable : 1 ) It takes defined set of…

Q: The table below lists measured amounts of redshift and the distances (billions of light-years) to…

A: We have given a data  redshift (X)distance…

Q: Small-Cap ETF 1.44 Capital Opportunity Admiral Shares 1.79 sum of squares for treatments 0.6133 sum…

A: The given data is as follows:

Q: I need help with this question   1. Are the main effects significant? Explain

A: We have given a ANOVA table for test between subjects effectsHere in this problem main effects are…

Q: What is the probability that Dakota finds 5 or fewer defective batteries?

A: Given, of all tablet computer batteries produced are defective. Let us  be the random variable…

Q: Baby weights: Following are weights, in pounds, of  11  two–month–old baby girls. It is reasonable…

A: The data shows the weights, in pounds, of 11 two–month–old baby girls.

Q: Given a set of six data points x_1=1.6, x_2=3.3, x_3=4, x_4=1, x_5=2.8, and x_6=1.9. Find the Parzen…

A: The formula for finding the Parzen probability density function using the Gaussian window function…

Q: Which of the samples (see polygons) has the most variability according to the range? Frequency A 10…

A: The objective is to interpret the variability of the samples based on the range.From the visual…

Q: The negative effects of ambient air pollution on children's lung function has been well established,…

A: Want to calculate  a 95% confidence interval for the meanThe confidence interval for the mean is…

Q: Electricity bills: According to a government energy agency, the mean monthly household electricity…

A: The mean monthly household electricity bill in the United States in 2011 was $108.87. Assume the…

Q: The crisis in the real estate market caused the listing prices of homes in certain areas to fall…

A: Sample size Claim: Current listing price average is less than $244000, the previous in the previour…

Q: As a good experimenter, you have built a predictive model of the experimental data. The differences…

A: X is independent variableY is response variable

Q: Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of…

A: According to the Bartleby guidelines experts solve only one question and rest can be reposted.

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

A: Hello. Since your question has multiple, we will solve first question for you. If you want remaining…

Q: 7) A group of 39 randomly selected students have a mean score of 19.5 with a standard deviation of…

A: Given:

Q: Do men and women differ in the degree of empathy that they show to a stranger?  Below are data…

A: Men(x)Women(y)7758310471

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A:

Q: Forty-seven fast-food restaurant hourly employees were surveyed to see how many hours they worked…

A: n=4787 % confidence interval

Q: Find the confidence interval for a Related-Samples t-test (Ch.11), given the following info: Level…

A: Before and after scores of 4 persons givenThe given values are available in the following…

Q: has been selected from a population with a normal distribution. Nicotine in menthol cigarettes 80%…

A: It is given that Sample std. deviation, s = 0.23Sample size, n = 20Confidence level = 80%

Q: Archeologists have studied sizes of Egyptian skulls in an attempt to determine whether breeding…

A: X= 128.4,138.2 ,125.8 ,131.7 ,142.7,134.7,138.8 ,128.7n=8

Q: having the disease and n = 5, compute the expected number of tests needed, assuming independence.

A: Given,X is the random variable representing the number of tests needed.Number of individuals, n =…

Q: Select the Market Research data set, a sample size of 143, and click Sample Now. Request a Relative…

A: We have given a histogram chart for Ratecurr and five classes are made of Ratecurr and sample size n…

Q: The 147 heights of males from a data set of body measurements vary from a low of 158.0 cm to a high…

A: smallest observation ( minimum ) = 158 cm largest observation ( maximum ) = 195.1 cmwant to estimate…

Q: Find the variance and standard deviation. Class Limits Frequency (f) 81-90 8 91-100 2 101-110 6…

A: ClassFrequency81 - 90891 - 1002101 - 1106111 - 1205121 - 1307

Q: a. What is the standard error of the mean, o? 1.90 b. At 95% confidence, what is the margin of…

A: It is given that Sample mean = 20Population standard deviation = 6Sample size = 20

Q: A sample of 12 joint specimens of a particular type gave a sample mean proportional limit stress of…

A:

Q: A manufacturing machine has a 10% defect rate. If 9 items are chosen at random, what is the…

A: It is given that P( success ), p = 10% = 0.10Sample size, n = 9

Q: If a seed is planted, it has a 90% chance of growing into a healthy plant. If 12 seeds are planted,…

A: Given that if a seed is planted, the chance of growing into a healthy plant is 90%.

Q: (a) How many observations do you have in the data set? (b) Write down the corresponding regression…

A: The results of the regression of sales revenue on quality level and advertisement investments are…