Two independent experiments are run in which the drying time in hours of two different types of paint are recorded and compared. For paint A, there are na = 340 specimens, with HA = 5 hours, and known oA = 0.85 hours. For paint B, there are ng = 360 specimens, with HB = 3.9 hours, and known oB %3| 0.85 hours. Find the probability P(X.- X R>1) where X. and Xp are the average drving times for the given

Q: hen creating a 99% CI based on data from one sample the size of n=31, which t value should be used?

A: Given: n=31 The degree of freedom=n-1=31-1=30 The level of significance (α)=0.01 We see inside the…

Q: Suppose the relationship between Y and X is given by: Y = 3.1415 + 6X + error  By how much does the…

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

Q: A manufacturer claims that 10% of women using the "pill" suffer from side effects. The Federal Drug…

A: It was found that 103 out of 900 women had side effects. Let p-cap be the sample proportion.

Q: Suppose the incidence rate of myocardial infarction (MI) was 5 per 1000 among 45- to 54-year-old men…

A: 7.14   Null Hypothesis:   H0:p1=p2   That is, there is no difference between the 24-hour…

Q: a sample of n=7 scores has the mean of M=16. One score in the population is changed from X=20 to…

A: The mean is 16 and the sample size n is 7.

Q: Suppose the relationship between Y and X is given by: Y = 3.1415 + 6X + error By how much…

A: X and Y are two random variables such that Z=X+Y, then the relation of expectation of Z with…

Q: Unfortunately, arsenic occurs naturally in some ground water.t A mean arsenic level of u- 8.0 parts…

A:

Q: Unfortunately, arsenic occurs naturally in some ground water.t A mean arsenic level of u= 8.0 parts…

A: We have given that  Sample size n=36 ,xbar = 7.1 ,mu=8bbp ,s=2.2 and level of significance =0.01

Q: Suppose the random variable xx has a normal distribution with μ=300μ=300 and σ=30σ=30. Find the…

A: Given: μ=300, σ=30.

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: For a binomial variable X if n = 21 and p = 0.5. Find the variance?

A:

Q: N=15 scores has ΣX=120.

A: Given, N=15 ∑X=120

Q: Prove that the E(X) = 1/p for a geometric distribution, where x is the number of trials.

A: The geometric distribution with probability that ranges from 0 to 1 is a discrete probability on the…

Q: A matched-subjects experiment produced at statistic with a df of 13. How many subjects participated…

A:

Q: Unfortunately, arsenic occurs naturally in some ground water.t A mean arsenic level of u = 8.0 parts…

A: a)   Assume that μ is the population average of arsenic level.

Q: A sample from a normal population with u=50 and o =6 has a mean of M =48.20.If the sample mean…

A: Given,mean(μ)=50standard deviation(σ)=6sample mean(M)=48.20z-score =-1.50

Q: Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 310…

A: Number of drivers who claim that they always buckle up, x=310. Number of drivers who were surveyed,…

Q: A population with a mean of μ = 8 has SX = 40. How many scores are in the population?

A: It is given that, the population mean is µ = 6 and ΣX = 40.

Q: A researcher is studying the pickerel population in two lakes, Lake Rick and Lake Morty. Samples of…

A: There are two independent samples which are Lake Rick and Lake Morty. We have to test whether there…

Q: Suppose that the random variable X represents the length of a punched part in centimeters. Let Y be…

A:

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

A:

Q: A sample of n=25 scores has a mean of M=68. Find the z-score for this sample: if it was obtained…

A: Sample size = 25 Sample mean = 68 Mean = 60 Standard deviation = 10

Q: whoaccess their bank statements online. Denoting the population propotions by Pm and Pw, a…

A: Given that The values of the test statistic is found to be z = 0.784, and the p-value for the test…

Q: A sample of n = 8 scores has a mean of M = 16. For this sample, ΣX = 128. Is this true or false?

A: A sample of n = 8 scores has a mean of M = 16. For this sample, ΣX = 128.

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: a survey is conducted to compare the proportions of men and women whoaccess their bank statements…

A: Given that, There are proportions of men and women who access their bank statements online. Two…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.