A sample of 42 observations is selected from one population with a population standard deviation of 4.5. The sample mean is 100.5. A sample of 56 observations is selected from a second population with a population standard deviation of 3.8. The sample mean is 98.5. Conduct the following test of hypothesis using the 0.10 significance level. He: H₁ H₂ H₁ H₁ H₂ a. Is this a one-tailed or a two-tailed test? One-tailed test O Two-tailed test b. State the decision rule. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) The decision rule is to reject H0 if z is the interval (

Q: A- Area in right tail Table VI t-Distribution Area in Right Tail 0.025 0.01 0.005 0.0025 15.894…

A: We are going to find the 95% confidence interval by finding the critical value

Q: c) Calculate the slope, m, of the best-fit line using your two good points from part b). d) Write…

A: Please note that as per our guidelines if multiple sub-parts are there in a question we can answer…

Q: If P(E) = 0.2, P(F) = 0.3, and E and F are independent events, find P(E and F). 1) 0.06 2) 0.08 3)…

A: P(E)=0.2P(F)=0.3and E,F are independent events.

Q: a three rows by four columns cross-tabulation table of a chi-square test f dependence, what is the…

A: Number of Row=3 Number of columns=4

Q: Consider the linear regression model: Yi = Bo + Bí®i tai, tin N(0, ²) and €; s independent. Test Ho…

A: Linear Regression Model: Linear regression is a statistical method used to model the relationship…

Q: We run the following regression using a sample of 148 women living in the western states. The…

A: The regression equation is, .

Q: In looking over customer data for your local ice cream shop, you estimate the following…

A: Given,P(vanilla) = 0.4P(sundae) = 0.4P(vanilla and sundae) = 0.1Using formula,

Q: Draw the graph and highlight the area of ± 2 standard deviations.

A: The area of ± standard deviations.

Q: Consider the linear regression model: Y₁ = Bo + B₁x₂ + Ei, Ei ~ N(0, 2) and €; s independent.…

A: Given information:n= 13 observation k= 1 independent variable

Q: Question 1 Segolame is a final year student and has embarked on collecting data for his research…

A: OccupationMaleFemaleTotalAdministrators271441Proffesionals312051Technicians64156220Agricultural…

Q: Prove that the standard deviation of a normal distribution that has parameters (µ , σ) is σ

A: µ (mu): This represents the mean of the normal distribution.σ (sigma): This represents the standard…

Q: What is the Confidence Interval for a random sample of 86, mean of 92, standard deviation of 17.48,…

A: Given,Sample size, n = 86Sample mean, = 92Sample standard deviation, s = 17.48Confidence level, C =…

Q: Assume that you have been provided the following information for a sample of cars The covariance…

A: The covariance between weight and miles per gallon is equal to -4.9 pound-miles.The standard…

Q: is an error or discrepancy caused by something other than the fact that a sample was selected…

A: It is given in a blank statement. Here, we need to find out the correct term for the blank space.

Q: X; has a Poisson distribution with mean Let X₁, X2, ..., X₁, be a random sample from a Poisson…

A: Poisson Distribution: You should understand what a Poisson distribution is and its probability mass…

Q: a) Show F is a valid CDF. Ans: F is 0 to the left, F approaches 1 to the right, and F never…

A: F(X)=1-1/x2 ; x≥1

Q: Consider all five digit numbers that can be creates from the digits 0-9(assume that numbers can…

A: From the given information,The digits from 0-9There are,Total number of digits = 10Total number of…

Q: A population of values has a normal distribution with u=90.8 and o=57.6 . You intend to draw a…

A: Mean()=90.8standard deviation()=57.6sample size(n)=63

Q: It is desired to test H, -50 against population with mean and variance e Which one of the following…

A: As per the guidelines of the Bartleby, solution of only first 3 parts given.It was blirred…

Q: Suppose eight students in a statistics class of 12 students are sophomores. What is the probability…

A: Total students = 12Sophomores = 8 Not sophomores = 12 - 8 = 4

Q: In the past Grades (G) of the police academy entrance exams in NYC was distributed normal with mean…

A: Claim:Test whether this data comes from a normal distribution with mean 66.5 and variance of 100 or…

Q: Select the correct statement(s) from the choices below. More than one statement may be correct.…

A: Given the statements about the correlation coefficient.Want to check whether they are true or not.

Q: 7. Suppose that three random variables X₁, X2, and X3 have a mixed joint distribution with…

A:

Q: 1 The table gives the population in millions. Give an explanation of the evidence that the growth is…

A: DatePop.188050.2189062.91900761910921920105.71930122.81940131.71950151.31960179.31970203.31980226.51…

Q: A message is transmitted using a binary code of Os and 1s. Each transmitted bit (0 or 1) must pass…

A: Form of the given information,The probability that the bit sent will be different from the bit…

Q: In a certain city, the daily consumption of water (in millions of liters) follows approximately a…

A: In a certain city, the daily consumption of water (in millions of liters) follows approximately a…

Q: A local children's center has 52 children enrolled, and 6 are selected to take a picture for the…

A: Total number of children = 526 are selected to take a picture for the center's advertisement.

Q: If X and Y are discrete random variables, the joint probability distribution of X and Y is also…

A: It is given that the statement about to the discrete probability distribution of two random…

Q: Find the value of Za 20.19 Click the icon to view a table of areas under the normal curve. 20.19…

A:

Q: 5. The Harvard Business School conducted a study of how CEOs spend their day. The study found that…

A: It is required to construct the stem-and-leaf plot, and answer the related questions.

Q: Professor John Morton has just been appointed chairperson of the Finance Department at Westland…

A: TermNumber of Sections OfferedTotal CostFall, last year7$13,500Winter, last year3$8,000Summer, last…

Q: A partial ANOVA table is given below df 1 Source Regression Error Total 24 SS 50 500 MS How large…

A: The partial ANOVA output table is given

Q: A recent study focused on the number of times people 18 to 25 years old and 25 to 35 years old send…

A: Two sample z test: A hypothesis test which is used to determine the significance of the two…

Q: K A survey was conducted that asked 1015 people how many books they had read in the past year.…

A:

Q: sing a Standard Normal Distribution, what z - score has an area of .892

A: Solution-:Given area=0.892We find z-score=?

Q: sample space of possible outcomes using card outcomes. 6 for the die outcomes and B, R for the

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

Q: You review your data from a population A and population B. The mean and standard deviation are noted…

A: Let X be the random variable in population A and Y be the random variable in population B.Given that…

Q: An experiment consists of throwing a fair coin four times. Find the probability mass function and…

A: (a) The number of heads before the first tail: Let X be the random variable representing the number…

Q: rying to find out how to be able to compute a sample proportion in excel using the p=xn formula but…

A: Given that,where  is the sample proportion.

Q: What is the expected value of Y if the distribution of Y is given as: O 1) -5 02) 0 3) 3 4) 6 5)…

A: From the provided information,The probability distribution is as follow:YP(Y)-50.400.3100.1200.2

Q: A Moving to another question will save this estion 15 The owner of Darkest Tans Unlimited in a local…

A: Given information: The July's month forcast value is 145Here t=4 july month  smoothing constant

Q: 44. If X-N (0, 1) and Y-N (0, 1), prove that (1) Var (sin X) > Var (cos X) (ii) EIX-YIS √8/T

A: If X~N(0,1) and Y~N(0,1)Prove that a.. Var(sin(X)>Var(cosX)b.. E(|X-Y|)≤√8/π

Q: If you randomly select a card from a well-shuffled standard deck of 52 cards, what is the…

A: A well-shuffled standard deck of 52 cards are given.

Q: (a) Find the area under the standard normal curve between -0.52 and 2.09. answer: (b) Find the area…

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

Q: The trade magazine OSR routinely checks the drive-through service times of fast-food restaurants. A…

A: Suppose  is the population mean drive-through service times of fast-food restaurants.

Q: The manufacturers of Good-O use two different types of machines to fill their 25 kg packs of dried…

A: The manufacturers of Good-O use two different types of machines to fill their 25 kg packs of dried…

Q: Assume that you have been provided the following information for a sample of cars The covariance…

A: The covariance between weight and miles per gallon is equal to -4.0 pound-miles. The standard…

Q: Consider the linear regression model: Y₁ = B₁ + B₁x₁ + €i, €i ~ N(0, 0²) and €; s independent.…

A: The linear regression model is, The data set is,xy2723937310669334436475558607689701075138212

Q: A travel agent is interested in the average price of a hotel room during the summer in a resort…

A: Given sample size n=16Average=$135Standard deviation=$25

Q: An industrial plant dumps its waste into a nearby river and you want to investigate the level of…

A: The question is about confidence interval.Given :Randomly selected no. of locations ( n ) = 15Sample…