Samantha and Jonathan go to a sports game. There is a probability of 0.3 that Samantha will buy a drink. The probability that Jonathan will buy a drink is 0.35 if Samantha buys a drink and 0.65 is Samantha does not. Find the probability that  1) both buy a drink 2) neither buy a drink  3) one of them buys a drink  ^ I already know how to solve this, I just needed help figuring out how to make a probability tree diagram from this

Q: butterflies (Damaus plexippus), a species that undertakes large seasonal migrations size. Why might ...

A: We have given that  Sample size n =92 Sample mean =11.7957 Standard deviation =1.1759

Q: Find out by interpolation from the following data the number of workers earning $24 or more but less...

A:

Q: Given the power regression model y = 20x^1.6, which is the linear regression model after transformin...

A: The dependent variable is y and the independent variable is x. The log-log regression model can be g...

Q: Problem 1.29 I arrive home from a feast and attempt to open my front door with one of the three keys...

A:

Q: For the past decade, rubber powder has been used in asphalt cement to improve performance. An articl...

A: For the given data set Find ( b ) Coefficient of determination = ? ( c ) estimate of the error stand...

Q: 9. Using the empirical rule, the area under the normal distribution that lies within three standard ...

A: Empirical rules:1) P(μ-σ<X<μ+σ)=68%2) P(μ-2σ<X<μ+2σ)=95%3) P(μ-3σ<X<μ+3σ)=99.7%

Q: The correct formula for effect size using Cohen's d for a single-sample t test is:

A: We know that cohen's d measures the effect size. Here μ is population mean, M is sample mean, s is s...

Q: Test this hypothesis.   O Fail to reject the null hypothesis. There is enough evidence to oppose th...

A: Given data : sample size, n =100 sample mean, x̄ = 76 sample standard deviation,s=...

Q: In a certain beauty pageant, there are 10 equally beautiful and talented candidates. In how many way...

A:

Q: Example 20 : If the probability density function of X is given by (x/2, for 0 < x <1 1/2, for 1<x< 2...

A:

Q: .5 .25 1.4 1.5 .85 .20 1.5 1.75 .10 .65 .75 2 1 1.10 1.65 1.4 .6 .35 .40 .25 What is the mean number...

A: For given set of data , we nee t calculate the z-score of size 0.5 hrs.

Q: Researchers conducted a study of smartphone use among adults. A cell phone company claimed that iPho...

A: . Find a 95% confidence interval for the difference in proportions between white and African America...

Q: Here is the Minitab result for the mean ideal BMI for women (top) and men (bottom):5 One-sample T N...

A: We have given that  N=40 Mean=18.850 Stdev= 1.750

Q: In 2021, many agricultural firms, which reported their profits, had beaten the market- profit estima...

A:

Q: In a normal distribution with a mean of 15 and standard deviation of 3, what does a z-score of -2 in...

A: here use standard normal distrivution properti

Q: Example 39. The first twelve letters of the alphabet are written down at random. What is the probabi...

A:

Q: Because of the relatively high interest rates, most consumers attempt to pay off their credit card b...

A:

Q: An amusement park insurance agent wanted to limit the access in the highest roller coaster. No one u...

A: mean(μ)=63  inchesstandard deviation(σ)=6  inches

Q: If two regression coefficients are bx and br 20 what would be the value of ry?

A: Given:  given regression coefficients of y on x byx=5/6 and x on y bxy=9/20  then to find coefficien...

Q: A Trucking Company claims that the mean weight for their delivery trucks when they are fully loaded ...

A:

Q: Suppose that f(x) = e−x for 0 < x. Determine the following: d. P(X < 4) e. P(3 ≤ X) f. x such tha...

A:

Q: In a shipment of 25 hard disks, six are defective. If five of the disks are selected at random, what...

A: If the event has two outcome then the event follows Bernoulli distribution. If the same event follow...

Q: Example 6-17. In a lottery m tickets are drawn at a time out of n tickets numbered 1 n. Find the exp...

A:

Q: 2. If the variance of the population is σ^2 = 144, then what is the value of the standard deviation ...

A: 2) The population variance is 144.

Q: 1. With economical concerns being so great, many people are no longer purchasing new vehicles, but a...

A: We have given that,  Average or sample mean (x̄) = 6.2, standard deviation (s) = 1.2 and sample size...

Q: 15. The velocities of cars in express way are normally distributed with a Mean of 90 km/hr and stand...

A: Given,mean(μ)=90standard deviation(σ)=10Z-score=2.5

Q: PROBLEM 2: Ito's Formula in Action Consider the SDE: dX = aX dt + b(t) X dW with X(0) = 1 Here a is ...

A:

Q: Suppose that a person is waiting for an email. He knows that the email will arrive at a time uniform...

A:

Q: . Regression equation in standard format . What percent of variation in revenues can be accounted fo...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer first three subparts...

Q: 13. According to the 68%-95%-99.70% rule, the standard deviation and mean interval that covers appro...

A: Empirical rule states that, About 68% of data falls within one standard deviation of mean, about 95%...

Q: Example 6-5. A gamester has a disc with a freely revolving needle. The disc is divided into 20 equal...

A:

Q: High blood pressure: A national survey reported that 34% of adults in a certain country have hyperte...

A:

Q: Let X1, X2, andX3 be independent and normally distributed random variables with E(X1) = 4, E(X2) = 3...

A:

Q: In a related-samples t test, the null hypothesis posits that the mean of the sampling distribution i...

A: Here related sample t test is used to compare  paired data

Q: Suppose, in a car shop, the number of cars sold by a salesman follows a probability distribution wit...

A: Given Suppose, in a car shop, the number of cars sold by a salesman follows a probability distributi...

Q: In a business, the Chief Executive Officer wants to know if his workers are for or against mandatory...

A: Given that  Level of significance=0.10 We have to find  What is the value of the degree of freedom f...

Q: Gracia, an ALS student, obtained a z-score of 1.35 in an achievement test that is normally distribut...

A: Given : Z-score=1.35 Mean=85 Standard deviation =5

Q: Supply the needed information by solving the missing value. x 25, µ= 40, o 6, z = ? 1. 2. z=-2.25, u...

A: Since you have asked multiple subpart questions, we will solve first three subparts for you. To get ...

Q: List and explain Four examples each of probabilistic and non- propabilistic sampling techniques.

A: Probability sampling involves random selection, allowing you to make strong statistical inferences a...

Q: The mean of data set A is 42. The mean of data set B is 47. The mean absolute deviation (MAD) of bot...

A: The mean of data set A is 42.

Q: In order to forecast enrollment for next fall, XYZ University of the CBA wishes to forecast enrollme...

A: The scatterplot is used to show the association between two variables of a dataset. It is a graphica...

Q: much customers buy is a direct result of how much time they spend in the store. A study of average s...

A: We have given that  Population mean =8.3 for female Population mean =4.5 for Male  NOTE:- According ...

Q: Question 1. a) Consider an experiment which measures the value of three different vari- ables on a u...

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: 8. What is the equivalent of the mean of the following graph? А. О В. 1 С. 2 D. 3

A:

Q: 1. Consider two samples Sample A: (2, 4,3,6, 7,9) Sample B: (3,2, 5, 7, 8, 41} (a) Find the mean, me...

A:     The following table represents the given information as follows: SL No Sample A  Sample B 1...

Q: Approximately 68% Approximately 95% Approximately 75% Approximately 88.9% Almost all e of customer a...

A: Let X be the random variable from below shaped (normal) distribution with average pr mean (μ) = 29 a...

Q: Property 10. If X and Y are independent random variables, then E [h (X ). k (Y)] = E [h (X)] E [k (Y...

A:

Q: If Elson's z-score on post-assessment is -3, the mean is 10 and the standard deviation is 2, what wa...

A: As per guidelines expert have to answer first question only dear student please upload other questio...

Q: 11. If the scores in a Probability and Statistics test are normally distributed with a mean of 31 an...

A:

Q: small country consists of five states. Call these states A, B, C, D, and E. The standard quotas for ...

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have ...