In a class of 15 students there are 5 boys and 10 girls If a committee of 6 students is selected at random, the probability that it consists of 3 boys and 3 girls. Round to two decimals

Q: Let E(X)=−7,E(Y)=4,var(X)=16 and var(Y)=8 Calculate (a) E(2X+4Y). (b) E(X − 2Y − 2022). (c) var(2X…

A: According our policy we can answer only first three subpart for remaining please repost the…

Q: Linear Regression is popular because we can, with little risk, extrapolate the results beyond the…

A: FALSE   Explanation: Linear regression is popular model because the representation is so simple.…

Q: With a lower class limit of the first class of 45 and a class width of 5: a) Construct a frequency…

A: Given data shows the home ownership rate in each of the 50 states and Washington, DC. in 2017.

Q: Statement. For n events A, Az, ..., Ag, we have A₂, 'n' n (α) 0) P(24) 2 | > ΣΡ(4)-(n-1) i=1 η ομώνα…

A:

Q: The height (sidewalk to roof) of notable tall buildings in America is compared to the number of…

A: The independent variable is stories (x) and the dependent variable is height (y).

Q: Scores Probability 1 6 9 11 14 0.05 0.05 0.25 0.15 0.5 Find the expected value of the above random…

A: Introduction: It is required to find the expected value of the random variable "Scores".

Q: Given: Expected Return Standard Deviation Investment A 0.07 0.05 Required: 1.Solve for coefficient…

A: Investment   A                  Expected value =0.07  Standard…

Q: alue of row % go?

A: The Contingency table : Gender Chocolate Strawberry Vanilla   Female 37 17 12 66 Male 21…

Q: Use the data set "longley" in R to answer the following questions Read the data set "longley" in R…

A: Given information: R is a programming language that is free software and it is used as statistical…

Q: Date: Question shows the The following population of Idaho for the given year. Year 1950 597,000…

A: Given: The population in 1980 is = 951,000 The population in 2020 is = 1,831,000 Formula Used:…

Q: Find the y-intercept of y = 10x. The y-intercept of y = 10x is (Type an ordered pair.) ...

A:

Q: For a certain normal distribution, the first moment about 10 is 40 and the fourth moment about 50 is…

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Q: what is the symbol for the first parameter of the distribution and whats the value?

A: Answer: - Actually we have p=0.40  and sample size n=100  , This is the binomial Distribution

Q: Winning team data were collected for teams in different sports, with the results given in the…

A: Let Xi = Denotes the home / visitor Yi = denotes the Sports.

Q: 1. Find the number of rearrangements of the word OCEANOGRAPHER subject to the following…

A: Given Word = OCEANOGRAPHER Total words = 13

Q: Knee injuries are a common event in soccer. One of the more common knee injuries is when players…

A:

Q: (A) The value "df" stands for derivatives of freedom (B) These values give an idea how "warped"…

A: Given:  True or false  a): the value df stand for derivatives of freedom  b): this value give an…

Q: Classify the statement as an example of classical probability, empirical probability, or subjective…

A: Given: Statements of probabilities are given we need to identify whether and why it is subjective…

Q: - Convergence in mean square, If a sequence of r.v. X₁, converges to X in mean square, with E[X²]…

A: Given information: The information about convergence in mean square is given.

Q: hey (in dollars) the company spent on medical support for its employees in the first three months of…

A: Giving From the given table Formula for weighted mean =(summation of fi *xi)/summation of fi)

Q: Perform Dixon's Q-test to determine if the outlier exist in the first set of data at the 95%…

A: Given information: n=5Data set={121.771, 121.787, 121.863, 121.781, 121.557}Confidence interval= 95%

Q: Can you answer part D as well

A: Dice rolled twice Value of first roll - value of second roll =?

Q: Assume that a procedure yields a binomial distribution with n = 58 trials and the probability of…

A: From the provided information, Number of trials (n) = 58 Probability of success (p) = 0.87 X~B (58,…

Q: We have weight and height for 8 people, the data is given below: Weight (kg): 45, 52, 56, 62, 70,…

A: Here data is given for 8 people Weight in kg Height in cm and meter We have to calculate correlation…

Q: You will be comparing two sets of data for this assignment.  1. Determine the average number of…

A: Given: For Biochemistry students: n = 24 For Genetics students: n = 7 Formula Used: Mean X = ∑Xin…

Q: Consider the table below: Classes Frequency, (Mass) (kg) 30.00< 40.00 40.00 < 50.00 50.00 - 60.00…

A:

Q: 1) The below diagram shows two jugs that are similar. The volume of the smaller jug Is 0.8L. What is…

A: Basic concept of probability are used to solve the given problem Given, cost of 160 mm…

Q: Evaluate the following formula for p₁ = 0.6, P₂ = 0.2, P₁ P2 = 0, p=0.541356, q=0.458644, n₁ = 97,…

A: Given information: p^1=0.6p^2=0.2p1-p2=0p¯=0.541356q¯=0.458644n1=97n2=84 Find: z test statistic.

Q: 1.79 Find the proportions. Using either software or Table A, find the proportions of observations…

A: Ans#- Given, a standard normal distribution Z~(0, 1)           Find P(-0.90 &lt; z &lt; 1.85) = ?

Q: Use the following cell phone airport data 0.2 07 4.6 13.2 2.2 4.6 13.7 peeds (Mbps) Q₁ Mbps (Type an…

A: The data shows the cell phone airport data speeds from a particular network.

Q: A botanist grew 24 pepper plants on the same greenhouse bench. After 21 days, she measured the total…

A: The given data is 9.8, 10.1, 10.9, 11.3, 11.8, 11.9, 12.0, 12.0, 12.1, 12.2, 12.2, 12.3, 12.5, 12.6,…

Q: A manufacturing process produces a critical part of average length 110 millimeters, with a standard…

A: Here a manufacturing process produces a critical part of average length 110 millimeters, with a…

Q: Question 3 Verstappen Motor Holdings is preparing its budget for the year ended 31 March 2022. The…

A: Given: n = 6 Formula Used: b = n∑XY-∑X∑Yn∑X2-∑X2 a = ∑Y-b∑Xn

Q: A survey recorded the number of children 18 years old or younger who lived in  households. The…

A: The data shows the number of children 18 years old or younger who lived in  households.

Q: A small regional carrier accepted 21 reservations for a particular flight with 20 seats. 18…

A: Farmula used X~Bin(n,p) P(X=x)=nCx px(1-p)n-x ; x=0,1,2,...,n  P(X&gt;2)=P(over booking)=?…

Q: Evaluate E=z P₁ 91 P2 0 n₁ n₂ X₁ for z* = 2.575, x₁ = 37, x₂ = 77, n₁ = 43, n₂ = 91, P₁ = ₁ E=…

A: Given,x1=37 , n1=43x2=77 , n2=91

Q: d. What percent of Southern students pay less than $300 monthly? E% Round to two decimal places e.…

A: Here we have given the steam and leaf plot of premiums paid by students. Here, n = 62 We have to…

Q: K Among fatal plane crashes that occurred during the past 50 years, 668 were due to pilot error, 57…

A: Formula used: Relative frequency=( frequency of cause/total frequency)*100

Q: 8.38 Sampling at a party. At a party there are 30 students over age 21 and 20 students under age 21.…

A: Given: Total number of students=30 chosen at random 3 of those over 21 chosen at random 2 of those…

Q: Interpret this t-test result: t(85) = 4.125; p-value = 0.009 O The t-test, t(85) = 4.125, is…

A: Answer: From the given data, t(85) =4.125 p value =0.009

Q: Listed below are altitudes (thousands of feet) and outside air temperatures (°F) recorded during a…

A: For the given data We have to calculate unexplained variation.

Q: The serum cholesterol levels (in (a) 235, 230, 232, 211, 201, 191, 189, 208, 249, 198, 254, 257,…

A:

Q: bution with a mean of 2.4 kg/m and a standard deviation of 0.45 kg/m°. Enter the R code that can be…

A: Given that  Mean = 2.4 , Standard deviation = 0.45

Q: Researchers asked each child in a sample of 411 school-age children if they were more or less likely…

A: Given data Grade percentage that said they were more likely to purchase 6 32.4 8 46.8 10…

Q: Determine whether the data described below are qualitative or quantitative and explain why The…

A:

Q: Evaluate the following formula for x₁ = 27.8796, x₂ = 24.5476, ₁-H2 = 0, sp = 39.73, n₁ = 47, and n₂…

A: given data x1¯ = 27.8796x2¯ = 24.5476μ1-μ2 = 0sp = 39.73n1 = 47n2 = 40test statistic (t) = ?

Q: If you draw a card with a value of four or less from a standard deck of cards, I will pay you $134.…

A: From the provided information, There are 52 cards in standard deck. The number of cards with number…

Q: Suppose that 90% of all batteries from a supplier have acceptable voltages. A certain type of…

A: Given that 90% of all batteries from asupplier have acceptable voltages. n =10,P(X&gt;=9) =?

Q: Inspectors choose 40 envelopes from the 1000 stuffed each hour for visual inspection. What is the…

A: From the provided information, Inspectors choose 40 envelopes from the 1000 stuffed each hour for…

Q: The CDF of a random variable is given below. x 1 2 3 4 5 6…

A: For the given data Find Determine    a) P(X &lt;= 3) =? b) P(6 &lt;= X) =? c) P(3 &lt;= X &lt; 7) =?