A survey found that the average monthly rental fee of an ordinary dorm in NCR is Php 5,100 and in Region III is Php 4,500. The average is obtained from two sets of samples with 35 dorms in NCR and 32 dorms in Region II with a standard deviation of Php 200 and Php 230 respectively. At a=0.05, is there sufficient evidence to say that the dorm rate in NCR is higher than in Region III?

Q: In a single sample t-test, if the standard error of the mean becomes larger, the risk of committing ...

A:

Q: Eight coins are thrown simultaneously. Find the chance of obtaining. (i) at least 6 heads, (ii) no h...

A:

Q: The weights of new born black bear cubs are uniformly distributed with minimum of 245 and maximum of...

A: Given that - The weights of new born black bear cubs are uniformly distributed with minimum of 245 a...

Q: Below is a graph of a normal distribution with mean u = 5 and standard deviation o = 3. The shaded r...

A:

Q: If the input x(t) and the output y(t) are connected by the differential equation dy(t) T + y(t) = x(...

A:

Q: QUESTION 5 For this binomial distribution, what is the standard deviation for the number of successe...

A: Standard deviation of Binomial distribution is given by σ=√np(1-p)

Q: In Alpha College, students are required to join at least one school club to get extra-curriculum act...

A: Any real value function defined from sample space corresponding to the probability is known as rando...

Q: probability that the candidate is selected for at least one post?

A: Here use basic probability  Probability = (# favorable outcome)/(#total outcomes) A candidate is sel...

Q: both in millions of dollars) are functions of the years past 1990. R(t) = 21.4e0.131t  and  C(t) = ...

A:

Q: What is the probability of randomly selecting a adult?

A: It ia given that Total = 105 Number of adults = 53

Q: 3. Construct a probability distribution for the data and draw a histogram for the following:

A:

Q: · The following table relates to the profits and losses of 100 firms. Calculate the average profits ...

A:

Q: The following table gives the number of defects observed in 8 woollen carpets passed as satisfactory...

A:

Q: A stady of the career plam of young womm and men set questionnares to all 722membes of the semier cl...

A: Introduction: It is of interest to test whether there is a significant relationship between the gend...

Q: A researcher hypothesized that children's cholesterol levels may be affected by educating their pare...

A: The attached image

Q: Suppose that 13% of the population of the U.S. is left-handed. If a random sample of 160 people from...

A: The random variable X follows binomial distribution. The sample size is 160 and proportion is 0.13. ...

Q: If a predictor variable is well correlated with the other predictors, then standard error of its est...

A: We have given the statement, If a predictor variable is well correlated with the other predictors, t...

Q: Residual Model Diagnostics Normal Plot of Residuals ICart of Residuals 20 40 15 30 10 20 10 -10 20 -...

A: Since you have asked multiple questions, we will solve the first three questions for you. If you wan...

Q: A certain market has both an express checkout line and a superexpress checkout line. Let X, denote t...

A: Comment: As per the our company guidelines we are supposed to answer only three subparts.  Kindly re...

Q: What is the probability of randomly selecting a Car, given you selected Professor? Car Truck Totals ...

A: Given :   car truck Total student 26 27 53 professor 13 25 38 Total 39 52 91

Q: The following table gives aptitude test scores and productivity indices of 8 randomly selected worke...

A: Solution is given:

Q: If n= 300 and X= 120, construct a 90% confidence interval estimate of the population proportion. 0.3...

A:

Q: (Continuous series-exclusive). Find the median of the following distribution. Class intervals Freque...

A: Solution is given:

Q: The following table relates to the profits and losses of 100 firms. Calculate the average profits an...

A:

Q: If 1% of an airline’s flight suffers a minor equipment failure in an aircraft, what is the probabili...

A: Since each flight has the only option of "experiencing a minor equipment failure" (defined as succes...

Q: You believe that Republicans should be more enthusiastic about Donald Trump than Democrats. You ask ...

A: Hypothesis testing is used to make inferences from the sample about the population or parameter. The...

Q: Calculate median from the following data : Age Number of persons Age Number of persons 55-60 7 35-40...

A: By using online calculator

Q: Example 3-22. If 6n tickets numbered 0, 1, 2, ..., 6n – 1 are placed in a bag and three are drawn ou...

A:

Q: In a competition of 18 runners, how many ways can you pick the best 3 runners if you have to pick th...

A: We have given that  In a competition of 18 runners, we have to pick 3 best runners. The permutation ...

Q: 2. The recommended price for 1 kilo of pork is Php 225 pesos. A researcher wants to know if a certai...

A:

Q: Given the probability density function f(x) 2 over the interval [1, 3], find the expected value, the...

A: Given the , Probability distribution function(pdf) : f(x) = 1/2  ,      [1,3] We need to calculate t...

Q: Dimwit, a social media company, wants to become more competitive in the marketplace. They have devel...

A: Given : sample size, n =36 sample mean, x̄ =5.3 population standard deviation,σ=10...

Q: otherwise identical cards are numbered from 1 to 7 and well shuffled. One card is randomly drawn. St...

A: Sample space: The sample space of an experiment or random trial is the set of all possible outcomes ...

Q: Mustration 23. Bring out the fallacy, if any, in the following statement : (a) The mean of a binomia...

A:

Q: In 2013, Steve LeCompte, a stock market trader and analyst, did a study to see which TV personalitie...

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for...

Q: Based on the data shown below, calculate the correlation coefficient (to three decimal places) 5 63....

A:

Q: The following table relates to the profits and losses of 100 firms. Calculate the average profits an...

A: Solution is given:

Q: Given a regression equation y = 100 + 25 *x SE of the model = 35 %3D F calc = 230 Significant F = .0...

A: Given that :  We have to find the confidence interval for y given x=15 : 

Q: worked an average of 30 hours per week, with a standard deviation of 2. A sample of 65 male servers ...

A: A range of values can be suggested with a certain amounts of confidence such estimates are called co...

Q: Use the set of data in the box to answer the question. 1-3 100 123 100 121 139 100 119 117 125 136 1...

A: For the given data Find Mean =? mode =? median = ?

Q: What is the Expected Value for the following discrete probability distribution ? P(X) 0.27 1 0.11 0....

A: Expected value : E(x)= Σx * p(x)

Q: The prime Minister of a small Caribbean Island stated that 95% of the population was vaccinated from...

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for y...

Q: Suppose a 95% confidence interval for μ runs from 38 to 46. If we had tested H0: μ = 42 against H1:...

A: Given that,a 95% confidence interval for μ runs from 38 to 46. Then we need to find the decision if ...

Q: Consider drawing a person at random from the residents of Yale and then giving them a test for COVID...

A: Given info: Let A denote the event that the person selected is infected with the virus, and let B de...

Q: Show that the predicted value vector y-hat lies in the vector space of the design matrix X

A: Consider a simple linear regression model  Yn×1 = Xn×p βp×1 + εn×1 After minimizing the sum of squar...

Q: Part One Katie recorded the length, in inches, of the ribbon pieces she was going to use for a proje...

A: A line plot displays the data using a no. line.

Q: John was assigned the task of investigating the error in payments for routine purchases made by the ...

A:

Q: Given a sample of n1 = 16 from a population with s, = 11.25, and another sample of nz = 15 from a di...

A:

Q: Ha:P1 # P2 Solve: Give the value of the test statistic. Use the calculator. Select an answer What do...

A: Given: Number of women in low fat group said yes is, x1=1276 Number of women in low fat group, n1=59...

Q: 16. what is the level of significance 17. what is the degree of freedom 18. what is the critical v...

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for...