Find the probability of selecting 2 woman when four persons are choosen at random from a group of 3 men, 2 woman and 4 children.

Q: K Find the value of the permutation. 9P4 9P4 = 3024 (Type a whole number.)

A: Solution:  The formulae for the permutation is  nPr=n!(n-r)!

Q: #3 The weights of professional wrestlers are normally distributed with a mean of 270 pounds and a…

A: Given information- Population mean, µ = 270 pounds Population standard deviation, σ = 25 pounds Let,…

Q: One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use (from…

A: A random sample of 1053 students in which 95 report using illegal drugs.

Q: ses from One study, based on gers cite grades as their greatest source of pressure. Use a 0.05…

A: first of all we have to construct null and alternative hypotheses as follows we know that null…

Q: A study of bone density on 5 random women at a hospital produced the following results. Age 37 41 49…

A: Given data is Age(x) Bone Density(y) 37 350 41 335 49 325 61 320 65 315

Q: In a study of cell phone use and brain hemispheric​ dominance, an Internet survey was​ e-mailed to…

A: It is given that, n=2416 and x=1010.

Q: Suppose it is known that 10% of adolescent females in the United States have iron deficiency.…

A: Given  p=10%, n=150  X ~Bin(n=150, p=0.10) P(X<3)=?

Q: What is the square root of 35

A: Given that  Square root of 35   Calculation : Square root of 35  = 35 35  = 7 x 5 35 = 7 x 5 35 =…

Q: Miss 'X' is fond of seeing films. The probability that she sees a film on the day before the test is…

A:

Q: We wish to estimate what percent of adult residents in Ventura County like chocolate. Out of 400…

A: Given  X=349, n=400  Level of significance ɑ=0.05

Q: The average number of homes sold by the Acme Realty company is 2 homes per day. What is the…

A: To solve this problem, Poisson distribution should be used. Poisson distribution has a probability…

Q: A manufacturer uses two machines to drill holes in pieces of sheet metal used in engine…

A: Null and alternative hypothesis: Significance level: α=0.05 The sample proportions are,

Q: A random sample of n₁ = 276 people who live in a city were selected and 112 identified as a "dog…

A: given data n1 = 276  x1 = 112p^1 = x1n1 = 112276 = 0.4058       n2 = 117  x2 = 70p^2 = x2n2 = 70117…

Q: Question 12 Next Question > Delta Airlines' flights from Boston to Seattle are on time 60% of the…

A: Given that p = 0.60        and    n= 12 Let X be a random variable from Binomial distribution

Q: TEST- Part 2 - Normal Curve 2. The weekly salaries of teachers in one state are normally distributed…

A: We have:-    according to given question random  variable follows normal distribution as follows…

Q: In a study of the accuracy of fast food drive-through orders, one restaurant had 40 orders that were…

A:

Q: You own an investment which has an arithmetic mean return of 30% and a standard deviation of 15%.…

A:

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 230 cm.…

A:

Q: According to an almanac, 70% of adult smokers started smoking before turning 18 years old. K (a)…

A: We have given that p = 70% = 0.70 n = 100

Q: A payoff table is given as    S1 S2 S3 D1 250 750 500 D2 300 -250 1200 D3 500 500 600 a. What…

A: a)   S1 S2 S3 MAX D1 250 750 500 750 D2 300 -250 1200 1200 D3 500 500 600 600 since…

Q: A binomial probability experiment is conducted with the given parameters. Compute the probability of…

A: Givensample size(n)=13p=0.2x~Binomial(n=13,p=0.2)P(X=x)=Cxn×px×(1-p)n-x      ; x=0,1,...,n

Q: 14. You would like to know how effective a diet program is at helping people lose weight. 18…

A: Given that you would like to know how effective a diet program is at helping people lose weight. 18…

Q: Determine k, so that ƒx,y(x, y) = [k(x+y) 0<x<1, 0<y<1 0 otherwise is a joint pdf.

A:

Q: Find the mean of the following probability distribution? X P(x) 0.4386 0.3276 0.0299 0.0192 0.1847 0…

A: Given X.                     P(x)  0                     0.4386   1                     0.3276   2…

Q: Compute the critical values z∗ for the following confidence levels: 80% and 85%. Sketch a picture of…

A: Solution-: We want to find critical values for the following confidence levels: 80% and 85%.

Q: The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on…

A: From the given information, n=805,x¯=33.7,s=11.5

Q: Assume that the horizontal lines in the diagram represent duration of illness in 8 different people,…

A: Given, out of a community of 700. That is.,             Total number of persons=700 and the diagram…

Q: researcher was interested in the mean corn yeild for farmers in Illinois. She took an SRS of 28…

A: Given that  Margin of error =E =3.5 Population standard deviation =13.25 95% confidence level.

Q: e standard normal distribution table (page 2). e should be obtained if he wants to be within 3…

A: Given ME=0.03 Pcap=0.52

Q: 1. Compute the coefficient of determination r2. Comment on the goodness of fit. 2. Compute the…

A: (1)   Use EXCEL to determine the regression equation.   EXCEL procedure:   Go to EXCEL Go to…

Q: There are 26 balls marked with alphabetical order A to Z. What is the of selecting vowels listed…

A: given data  26 letters of alphabet 26 balls  P(vowel  selected ) = ?

Q: Example The average number of homes sold by the Acme Realty company is 2 homes per day. What is the…

A:

Q: What is the class expected and chi square

A: Given information:   Black Chocolate Yellow Total Class puppies, Oi 86 27 27 ∑Oi=140…

Q: mean 129.747 and standard deviation 0.87643 Determine the sample size required that will have an 80%…

A:

Q: 9.83 Toxic Mushrooms? Cadmium, a heavy metal, is toxic to ani- mals. Mushrooms, however, are able to…

A: The given sample size is 12, sum of the samples is 6.31, population standard deviation is 0.37.

Q: Two new drugs were given to patients with heart disease . The first drug lowered the blood pressure…

A: Given: Two new drugs were given to patients with heart disease . The first drug lowered theblood…

Q: An article gave the following summary information for fracture strengths (MPa) of n = 196 ceramic…

A: Givensample size(n)=196Mean(x)=47.78standard deviation(s)=3.85

Q: What is the probability of getting a sum 9 from two throws of a dice?

A:

Q: 1. Use the first graph to calculate the average increase in population per year for the interval…

A: Given are the two graphs showing change in population of a place in two time periods. Note that,…

Q: Table 1: Persons with secondary education Classes Less than 50 Less than 54 Less than 58 Less than…

A: Solution: From the given information, the table 1 is From the given information, the table 2 is

Q: Kendra, the Human Resources manager for Moore Manufacturing wants to determine whether the employee…

A: Given: Moore Manufacturing's Eastern Division: n1 = 25 X1 = 4.8 s1 = 1.1 Moore Manufacturing's…

Q: In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to…

A: given data claim : p &lt;0.20n = 6968x = 1327α = 0.01p^ = xn = 13276968 = 0.1904

Q: Suppose we have a bowl with 10 marbles - 2 red marbles, 3 green marbles, and 5 blue marbles. We…

A: Total number of marbles are n= 10  number of green marbles are n(G)= 3 and number of blue marbles…

Q: A binomial probability experiment is conducted with the given parameters. Compute the probability of…

A: Solution-: Given: n=40,p=0.05,x=2 We want to find P(2)=?

Q: Use the assumed mean, A = 534.5 to compute the arithmetic mean of the grouped data.

A: Class  freq (f) mid (x) d=(x-A)/h f*d c*f 510-519 7 514.5 -2 -14 7 520-529 10 524.5 -1 -10 17…

Q: Researchers studied the behavior of birds that were searching for seeds and insects in an Oregon…

A: Given that, Researchers studied the behavior of birds that were searching for seeds and insects in…

Q: A company claims that the mean weight per apple they ship is 120 grams with a standard deviation of…

A: From the provided information, Population standard deviation (σ) = 12 Sample mean (x̄) = 122.5…

Q: If X and Y are random variables, find E[YE(X|Y = y)]

A: Given information: The two random variables are X and Y.

Q: In which of the following scenarios will conducting a two-sample t-test for means be appropriate?…

A:

Q: Alan wants to estimate the proportion of adults who walk to work. In a survey of 10 adults, he finds…

A: Given,n=10x=1sample proportion(p^)=xn