Two valleys are sometimes infected with ee rot. Suppose valley 1 is infected with robability 45%, valley 2 is infected with robability 60%, and the probability that at east one is infected is 85%. Suppose tree rot observed in valley 2. What is the probabil- y that valley 1 is also infected? Your answer hould be a percentage (without the percent ign).

Q: a sample of n=20 scores has a mean of M=30. A second sample of n=10 scores has a mean of M=50. If…

A:

Q: if we take someone’s temperature through the ear, it will be usually a bit higher than his or her…

A: From the provided information, Mean (µ) = 98.7oF Standard deviation (σ) = 0.7oF Let X be a random…

Q: A random sample of n1 = 14 winter days in Denver gave a sample mean pollution index x1 = 43.…

A:

Q: A sample of n = 5 scores has a mean of M = 9. What is EX for this sample? %3D %3D

A: Given: Sample size = n = 5  Mean = M = 9 We have to find ∑X for the given data.

Q: Suppose the relationship between Y and X is given by: Y = 1million + 56.43*X + error  By how much…

A: The objective of the question is to find out the change in the expected value of Y when X increases…

Q: The claim is that the proportion of accidental deaths of the elderly attribute to residential falls…

A: From the provided information: The hypotheses can be constructed as: Null hypothesis: H0: p = 0.15…

Q: Suppose that we identify 155 women 50 to 54 years of age who have both a mother and a sister with a…

A: The hypotheses for the test are given below. Null hypothesis: H0: p = 0.08 Alternative hypothesis:…

Q: One sample of n=12 scores has a mean of M=7, a second sample of n=8 scores has a M =12. If the 2…

A: The mean M of the combined sample is,

Q: A sample of n = 6 scores has a mean of M = 10. One new score is added to the sample and the new mean…

A: Introduction: The mean of n observations, x1, x2, …, xn is given by the formula:

Q: The proportion of residents in Phoenix favoring the building of toll roads to complete the freeway…

A: It is given that the proportion of residents in Phoenix favoring the building of toll roads to…

Q: A sample of n = 15 scores ranges from a high of X = 11 to a low of X = 3. If these scores are placed…

A: Given: Lowest value of X = 3 Highest value of X = 11

Q: f n=7 scores has a mean of u=13. What is the value of EX

A: The formula of the mean is: Meanμ = ΣX N

Q: A sample of n = 10 scores has a mean of M = 13. After one score is added to the sample, the mean is…

A: Solution-: Given: n=10,M=13 (old)We want to add one score in the sample, the mean is found to be M =…

Q: One sample score has n=10 scores and a variance of 20 and a second sample has n=15 scores and a…

A: Formula to find pooled variance :  S12 = (n1-1) s12+(n2-1) s22n1+n2-2

Q: A population of N= 23 scores has a mean of u = 5. After one score is removed, the mean is found to…

A: Given that - A population of N= 23 scores has a mean of u = 5. After one score is removed, the mean…

Q: When doing blood testing for a viral infection, the procedure can be made more efficient and less…

A:

Q: a certain type equipped with two different types of braking systems. The data follows: m = 9,2…

A: Given:Suppose a, and, are true mean stopping distances at 50 mph for cars of a certain type equipped…

Q: Suppose ₁ and ₂ are true mean stopping distances at 50 mph for cars of a certain type equipped with…

A: The confidence level is, The significance level is:

Q: A corrections officer read that 58% of runaways are female. He believes that the percentage is…

A: The null hypothesis for testing significance of difference between sample proportion (p) and…

Q: Stephen Stigler determined in 1977 that the speed of light is 299,710.5 km/sec. In 1882, Albert…

A: The random variable X follows normal distribution. We have to test whether the Michelson’s data is…

Q: Suppose data shows that only 50% of breast cancer patients can survive more than 5 years. You…

A: The objective of this question is to identify the correct null and alternative hypotheses for a…

Q: The claim is that the proportion of peas with yellow pods is equal to 0.25 or 25% the sample…

A:

Q: A sample of n=4 scores is selected from a population with u=50 & ó=12. If the sample mean is M=56…

A: Given ,mean(μ)=50standard deviation (σ)=12sample size (n)=4sample mean (M)=56

Q: Assuming that the o for the 12 individuals is 1, and for the 15 individual is 1.5. Populations are…

A:

Q: A population has µ = 60 and σ = 10. For a sample of n = 25 scores from this population, a sample…

A:

Q: The process is said to be in control if the volume is within the range 7.23 ± a(0.41). Suppose that…

A: From the provided information, The process is said to be in control if the volume is within the…

Q: A farmer only grows apple and orange trees in his orchard. 40% of his trees are apple trees. He is…

A: All the given information is shown in the tree diagram A denotes Apple and O denotes Orange tree. E…

Q: uppose the relationship between Y and X is given by: Y = 4 + 3.2*X + error By how much does…

A: X and Y are two random variables such that Z=X+Y . The expectation of Z is given by E(Z)=E(X)+E(Y).

Q: Suppose 4, and 4, are true mean stopping distances at 50 mph for cars of a certain type equipped…

A: Given data: 95% CI is given as: