The lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days and a standard deviation of 16 days. In what range would we expect to find the middle 98% of most lengths of pregnancies? Round the answer to one decimal place. Between and days If we were to draw samples of size 40 from this population, in what range would we expect to find the middle 98% of most averages for the lengths of pregnancies in the sample? Round the answer to one decimal place. Between and days

Q: A statistics professor plans classes so carefully that the lengths of her classes are uniformly…

A: given data  uniform distribution  X~U( 47.0,52.0) find P(50.5<x<51.5) = ?

Q: Suppose that one variable, , is chosen randomly and uniformly from [0, 3], and another variable, y,…

A:

Q: group able. Assume that the two samples are independent simple random samples μ d from normally…

A: Given Significance level =0.05

Q: Suppose a random variable X has expected value E[X] = 1 and variance Var(X) = 4. Compute the…

A: a) The variable of interest is X.

Q: e following table shows the mileage and selling prices of eight used cars of the same model. Mileage…

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

Q: The probabilities that a student will receive an A, B, C or D grade are 0.4, 0.3 0.2 and 0.1…

A: The following information has been provided: The probabilities that student will receive grade A…

Q: Mean entry-level salaries for college graduates with mechanical engineering degrees and electrical…

A: Given Information: Mechanical engineers: Sample size n1=25 Sample mean x¯1=$46142.20 Sample standard…

Q: How many different two-letter sequences can you make by rearranging the letters {J,A,C,K}? Duplicate…

A: We need to find in how many different ways two-letter sequences can be made by rearranging the…

Q: A tram company runs two tram routes from station P to station Q. The first route is a direct tram,…

A:

Q: The number of hours spent on social media per week by teens is normally distributed with a mean of…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: A bus comes by every 14 minutes. The times from when a person arives at the busstop until the bus…

A: A bus comes by every 14 minutes. The times from when a person arrives at the bus stop until the bus…

Q: The air control informs the pilot of an aircraft about the altitude of the centre of the air…

A: Given problem Given that   The air control informs the pilot of an aircraft about the altitude of…

Q: In 2010, Taxi Cabs in New York City charged an initial fee of $2.50 plus $2 per mile. In equation…

A: When we want to predict the value of one variable, say y, from the given value of another variable,…

Q: Give the following answers to three decimal places, where appropriate. (c) Find the expected value…

A:

Q: MAY CONTAIN Suppose we have two random variables X and Y that have a continuous joint pdf of: y² for…

A: The continuous joint pdf of x and y is ,  f(x,y)=32y2for  0≤x≤2, 0≤y≤10otherwise

Q: The payoff table for three possible courses of action is given below. Which of the three actions…

A: The formula for calculating the expected value is : Expected value = Σ (value × Probability) Here we…

Q: ball is selected at random from the bag, find the probability that the number selected is even and…

A: we have given ten golf ball in which 0-9 number are written 0 1 2 3 4 5 6 7 8 9 we have to find…

Q: If two dice are thrown together, the probability of getting an even number on one die and an odd…

A:

Q: Between 5 and 14 credit hours per semester? 35. How many college students take between 17 and 23…

A: It is given that the distribution of credit hours follows normal distribution with mean 14 in and…

Q: 6.15. The random vector (X, Y) is said to be uniformly distributed over a region R in the plane if,…

A:

Q: The integers from 1 to 15, inclusive, are partitioned at random into two sets, one with 7 6) (…

A: given data integers : {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}partition it in two sets, one with seven…

Q: You and a group of friends are going to a five-day outdoor music festival during spring break. You…

A: Given  45% chance of rain on the first day,  55% chance of rain on the second day,  10% chance of…

Q: Question 2 The data in the following table represent the number of hours of relief provided by five…

A:

Q: 14 persons are seated around a circular table. Find the that 3 particular persons always seated…

A:

Q: 5), A partial deck of Uno cards has 20 red cards and 20 blue cards. You draw, without replacement, 5…

A: given data  20 red cards 20 blue cards  ________________ 40 total cards  'draw without replacement…

Q: etermine the marginal density function of X.

A:

Q: Suppose we want to choose 2 letters, without replacement, from the 3 letters A, B, and C. (a) How…

A: given data we haveto find out the number of ways for the given data we want to choose 2 letters from…

Q: Note: In this problem set, the notation C(n, k) is used for the combination "n choose k." Alternate…

A: There are 3 pets: pigs, fish, turtles.  Then possible 2 pet votes :  (pigs, fish), (pigs, turtles),…

Q: Suppose that one person in 1,000 people has a rare genetic disease. There is an excellent test for…

A: given data event A : have diseaseevent B : tests positiveP(A)  = 11000 = 0.001P(A') = 1 -0.001 =…

Q: Suppose you perform a (frequency) statistical hypothesis test at a = 0.05and obtain a p value of p =…

A: In testing of hypothesis, there are always two hypotheses - null and alternative. By using the…

Q: The distribution of ages of licensed drivers shopping at the Kalish County Mall is normally…

A: Given  Population mean μ=41  Standard deviations σ=7

Q: 2. Suppose that earthquakes occur in a certain region of California, in accordance with a Poisson…

A: Given that, Earthquakes occur in a certain region of California, in accordance with a Poisson…

Q: Suppose that the test score of a student taking the final of a probability course is a random…

A: Given that the test score of a student taking the final of a probability course is a random variable…

Q: 11. 100 students were interviewed. 28 took PE, 31 took BIO, 42 took ENG, 9 took PE and BIO, 10 look…

A: By bartleby policy i can gives only one answer at a time

Q: 0.5 0.4 0.3 0.2 0.1 Трк 0 n = 25 p = 0.5 5 10 15 20 P(13 ≤X ≤ 15) = 0.39 The GeoGebra Applet above…

A: It is given that the probability of win is 0.25, so p=0.5. He is going to play 23 games, so the…

Q: Question 8: A production line produces 6% defectives. For a random sample of 10 components,…

A: given data  P(defective) = p = 0.06 n = 10 components selected x = no. of defective components…

Q: Find the value of k that makes the function f (x, y)=ke²x-³y a joint probability density function…

A: f(x,y)=ke2x-3y ; x>0, y>x

Q: If an unbiased dice is rolled once, the odds in favour of getting a point which is multiple of 3 is:

A: If an unbiased dice is rolled once, the odds in favor of getting a point which is multiple of 3.

Q: Let A = (1,3,5,6,7), B = (1,5,7) Find AU B = Let A = (G,0,0,d), B = {o, d, y) Find AU B = Let X =…

A: We have given that:A=1,3,5,6,7B={1,5,7}

Q: 4. Suppose that the random variable X has density function fx(x) = and suppose that Y = e-4X 0,…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: The student council is hosting a drawing to raise money for scholarships. They are selling tickets…

A: Given There is one $2,000 grand prize, three $300 second prizes, and fifteen $10 third prizes. You…

Q: Suppose a sample of 50 MP3 players is drawn randomly from a population of MP3 players and the…

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

Q: ceeds 9. Show that the 15. How many times must we throw two dice in order to be sure that we get the…

A: The set of all possible outcomes of a random experiment is called sample space. For example, when a…

Q: 3. Let X and Y be two r.v.'s with joint p.d.f. given by: fx,y (x, y): = [cye¯¤,0 < y ≤ x <∞, 0,…

A:

Q: An account payable department must verify the details of the vendor invoice with a purchase order…

A: Option D is the answer. Answer : Block Sampling

Q: Calculate a 95% upper confidence bound for the mean of a normally distributed population using the…

A: Given that, x = 32289  s = 2846  n=15  For 95% confidence interval,the z value is 1.96

Q: Telephone interviews brought 258 responses from among 300 households called. While face-to-face…

A: From the given information, 258 responses from 300 households were called and face-to-face…

Q: A quarter-circle thin plate sheet is produced as a part of a production line. The radius R of the…

A: From the given information, A quarter-circle thin plate sheet is produced as a part of a production…

Q: Exercise 6. Suppose a random variable has support: {0, 1, 2,4} and its pmf is: X 0 1 2 4 f(x) 3/7…

A: Let X be a random variable with probability function (probability mass function or probability…

Q: Data compiled by the Highway Patrol Department regarding the use of seat-belts by drivers in a…

A: From the provided information, Drivers Percentage of Drivers in Group Percent of Group Stopped…