Which of the following is the proper formula of the variance of variable y shown as 5 (0)²? OA (or) B. (0₂)² √n Ty √n (0₂)² n

Q: 39- A proposed project has the following cash flow estimates: End of Year Mean Net Cash Flow…

A:

Q: Supposed a certain game is fair and costs $6 if you lose and has a net payoff of $9 if you win. The…

A: To find: What is the probability of winning?

Q: Americans receive an average of 18 Christmas cards each year. Suppose the number of Christmas cards…

A:

Q: Every year, management and labor renegotiate a new employment contract by sending their proposals to…

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

Q: . What is the p-value?

A: here given  Sample mean  = 24 mph  Sample standard deviation  =  2.2 mph  Sample size  = 14  here…

Q: There are three car mechanics have been hired in Ahmad Workshop. Each has different expertise that…

A: The following solution is provided below:

Q: Suppose that f(x) = 1.5x² for −1 < x < 1. Determine the following probabilities: a) P(0 < X) = 0.5…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: Calcium is essential to tree growth because it promotes the formation of wood and maintains cell…

A:

Q: 740 students applied for admission to G11 Senior High School at USTP. Of those applicants, 123 were…

A: Answer : - 740 student applied for admission to G11 senior high school at USTP.                  Of…

Q: A sample of 18 observations taken from a normally distributed population produced the following dat…

A: Solution  given data, 28.1 27.1 25.2 25.5 31.2 23.1 26.2 24.1 28.4 37.1 23.9 28.9 27.6 25.5 27.3…

Q: Uber Pvt Ltd wants to examine the safety of its different car ride types. These include UberX,…

A: Anova is a type of parametric test. It is the extension method of two sample t test. It is used to…

Q: A sniper hits a target 80% of the time. He fires five shots at the target. Find  A. Probability…

A: Given problem is binomial distribution Let X: No. of hits n=No. of shots at the target=5 p=prob. of…

Q: The business college computing center wants to determine the proportion of business students who…

A: As Prof. N. G. Das said - "Testing of hypothesis is a rule which, when the sample values have been…

Q: The frequency histogram for the speeds, in miles per hour, of a sample of 34 cheetahs is shown to…

A:

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 80 mph and…

A: Answer :- Given X be a normally distributed  With mean (μ) = 80 mph and                  standard…

Q: The diameter of a particle of contamination (in micrometers) is modeled with the probability density…

A:

Q: QUESTION 8 The age of population of jurors in certain area is normally distributed with mean age of…

A: empirical rule for normal probability.

Q: Consider the following regression estimates (FN4) Linear regression Number of obs 29,471 318.65 F(1,…

A: Solution: The linear regression output is given.

Q: Answer the following Questions (Show your solution) 1. For the standard normal distribution, what is…

A: Let Z be the random variable from standard normal distribution with mean = 0 and standard deviation…

Q: is the distribution of X? X-U(O ✓60 the sampling distribution is O O e that 40 classes are clocked.…

A: μx¯=30σx¯=2.7386

Q: A student researcher found that 18 randomly selected rice farms had a mean harvest score of 86 and…

A: Given n1=18, sample mean x̄1=86, s1=6.25  n2=24, sample mean x̄2=80, s2=3.45

Q: Q3. The number of calories and number of milligrams of cholesterol for a random sample of fast- food…

A:

Q: To construct a confidence interval for the difference between two population means ₁-₂, use the…

A:

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A: Solution-: Given: μ=00C, σ=10C We want to find 65 percentile. This is the temperature reading the…

Q: The life of lightbulbs is distributed normally. The standard deviation of the lifetime is 20 hours…

A: The following information has been provided: The population mean is μ=600. The population standard…

Q: What types of correlations do these first two graphs of the article show?

A: Here use given graphs and correlation concept Variable on  X axis increase and the variable on y…

Q: A simple random sample of size n is drawn from a population that is known to be normally…

A: From the provided information, Sample size (n) = 20 Sample variance (s2) = 12.2 Confidence level =…

Q: 4a. Suppose that 35% of senior citizens have a social media account. If we survey 150 senior…

A: The question is about sampling distribution Given : Prop. of senior citizens have a social media…

Q: 7. The age x in months and vocabulary y were measured for six children, with the results shown in…

A: The provided information is  x y xy x2 20 72 1440 400 23 71 1633 529 30 73 2190 900 37 74…

Q: For numbers 13 to 15. Find the measures of position of the grouped data in Column A and B. Then…

A: Frequency distribution  Qi=L+ f*​(( i*N/4)−c.f)/h, where L is lower class boundary, f is frequency…

Q: A survey of a 106 randomly selected students at 1 college showed that only 90 checked their campus…

A: Obtain the 90% confidence interval for the percentage of students at the college who do not check…

Q: The data below are the temperatures on randomly chosen days during a summer class and the number of…

A:

Q: Are blonde female college students less likely to have boyfriends than brunette female college…

A: Given data: Significance level = 0.01

Q: Assume the population distribution has a mean of 100 and a standard deviation of 10.  We test an…

A: The population mean is 100 and the standard deviation is 10.

Q: Luz is selling tomatoes in Sampaloc market. She decided to change the price of her tomatoes every…

A:

Q: 1) Let X be a discrete random variable with the following PMF 0.1 for x = 0.2 0.2 for x = 0.4 0.2…

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

Q: 3.29 The quarterly revenues of a small medical supply company for the last several years (27…

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

Q: The number of seconds X after the minute that class ends is uniformly distributed between 0 and 60.…

A:

Q: The head of the production department of a RM electronic company wants to determine the relationship…

A: given data and obtained as,

Q: Consider the following sample of production volumes and total cost data for a manufacturing…

A:

Q: The parameters of my population distribution are: µ = 20 and σ = 5. The parameters of my sample…

A:

Q: An automobile dealer conducted a test to determine if the time in minutes needed to complete a minor…

A: Given information: The three types of cars are used as blocks in the experiment. Thus, Number of…

Q: Explain what is the purpose of a validation set, and how it differs from the test set.

A: IN general any data set which is to be analyzed is divided into three groups1) Training Set 2)…

Q: A large value of coefficient of determination indicates that the estimated regression line is a good…

A: Coefficient of determination: Coeff of determination is explain variation in y due to x. For e.g 0.6…

Q: Suppose that the following is to be tested: Ho: p= 0.72 and Ha: p *0.72. Calculate the observed…

A: It is given that x=68 and n=90.

Q: The number of credits being taken by a sample of 13 full-time college students are listed below.…

A: Given that  Number of data values (n) = 13 The data values are  8 , 10 ,11 , 11 , 8 , 9 , 7 , 7 , 7…

Q: Show all your steps please and explain Do it in digital format and upload screenshots of every…

A: As Prof. N. G. Das said "Confidence interval is an interval such that the probability of the unknown…

Q: Directions: Given the range, class intervals, class interval size and first class interval,…

A: Range is the difference between the highest and lowest value for a set of values. For a large number…

Q: Consider a large population with p = proportion for a sample size of 410. Round your answer for…

A: It is given that p=0.23 and n=410.

Q: Suppose the mean income of firms in the industry for a year is $25 million with a standard deviation…

A: