Assume that when adults with smartphones are randomly​ selected, 56​% use them in meetings or classes. If 5 adult smartphone users are randomly​ selected, find the probability that exactly 2 of them use their smartphones in meetings or classes.       Question content area bottom Part 1 The probability is enter your response here. ​(Round to four decimal places as​ needed.)

Q: Five males with an X-linked genetic disorder have one child each. The random variable x is the…

A: Given that table. X 0 1 2 3 4 5 P(x) 0.031 0.152 0.317 0.317 0.152 0.031 NOTE:- According to…

Q: For a chi-square distribution with n d.f. establish the following recurrence relation between the…

A:

Q: The overhead reach distances of adult females are normally distributed with a mean of 197.5 cm and a…

A: The mean is 197.5 cm and standard deviation is 8.3 cm.

Q: Let XX....X be a random sample from a distribution with density function 11 f(x:0) = OA. 0x0-1, 0<x<…

A: Given that, X1,X2,X3.......Xn be a random sample from a distribution  with density function: f(x) =…

Q: You run a regression analysis on a bivariate set of data (n=82n=82). With ¯x=50.7 and ¯y=65.7, you…

A:

Q: Classify the data a continuous or discrete. The number of e mails received in a given day.

A: since we know that discrete data: Discrete data  is a data thatcan be counted while on the other…

Q: Find the probability that the number x of correct answers is fewer than 4.

A: Let p be the probability of correct answer. Given that p = 0.4 Let X denote the number of correct…

Q: According to Reader's Digest, 38% of primary care doctors think their patients receive unnecessary…

A:

Q: Construct a 99​% confidence interval of the population proportion using the given information.…

A: The given confidence level is 99%, x=40,n=200.

Q: Do you think regression should be used to answer sensitive problems, where a wrong decision incurs…

A: Regression :  Y= ax+b  Y= dependent variable x = independent variable   It shows relationship…

Q: Part 1 a. Use the multiplication rule to find ​P(WCC​), where C denotes a correct answer and W…

A: Given that  Number of questions = 3 Number of choices = 5 P(W) = 4/5 , P(C) = 1/5

Q: Average wages of some firms are given below represent this by simple bar diagram Firm: Average wage:…

A:

Q: The effect size of a study helps determine if the statistical significance is a genuine treatment…

A: The effect size of a study helps determine if the statistical significance is a genuine treatment…

Q: The time it takes a person to recover from a cold is normally distributed with a mean of 8.8 days…

A: 1. Suppose a random variable x defines the amount of time a person takes to recover from cold.

Q: A random variable X has probability density function -Өх Oe , x > 0 9 f(x;0) It is desired to test…

A:

Q: A veterinarian collects data about puppies in her practice. She makes a scatterplot with their age…

A:

Q: Use the pie chart at the right, which shows the number of workers (in thousands) by industry for a…

A: Given :

Q: A binomial experiment with probability of success =p0.5  and  =n5  trials are conducted. What is…

A:

Q: 11. If outside line accesses from within a local phone network form a Poisson process with rate 1/…

A:

Q: In how many ways can 20 athletes be rewarded a first place medal, a second place medal, and a third…

A: Answer: From the given data, Number of athletes = 20 Number of positions for the medal = 3 which are…

Q: Let Z~ N(0, 1). Find P( - 2.4 < Z < 0.9).

A: Solution-: Let, Z- be the standard normal random variable We want to find P(-2.4&lt;Z&lt;0.9)=?

Q: Assume that adults have IQ scores that are normally distributed with a mean of 102.2 and a standard…

A:

Q: Let X.X.....X be a random sample from an exponential distribution with density function 1 11 Then…

A:

Q: Find the line of best fit for the ordered pairs 11, 52 and13, 82. What is the correlation…

A: Given The ordered pairs are (11,52) and (13,82)

Q: (a) From the 13 albums released by a musician, the recording company wishes to release 9 in a boxed…

A: As per our guidelines we are suppose to answer only one question kindlyrepost the remaining…

Q: b) The following ARIMA output has been obtained from R. Based on this output, explain which model…

A: ARIMA stands for Auto Regressive moving  Notations: ARIMA  (p,d,q)           (P,D,Q)m              ⋮…

Q: Engineers must consider the breadths of male heads when designing helmets. The company researchers…

A: The values provided in the question are as follows : Mean (µ) = 6.8 Standard deviation (σ) = 0.8 We…

Q: If event A and event B are mutually exclusive, and P(A) = 0.5 and P(B) = 0.3, find P(A and B).

A: From given data we have : P(A)=0.5 P(B)=0.3

Q: 1. The probability that the true mean is greater than 0 is at least 95%. 2. The probability that the…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: researcher is interested in the effects of cocaine on learning. A group of rats is randomly assigned…

A: The researcher is interested in the effects of cocaine on learning.

Q: Suppose that 13% of the population of the U.S. is left-handed. If a random sample of 175 people from…

A: Givenp=0.13sample size(n)=175Let "x" be the no.of people are left…

Q: Draw a normal curve with a mean of 67 and a standard deviation of 14. Describe how you constructed…

A: a normal curve with a mean(μ)=67and a standard deviation(σ)=14

Q: 2. Let X and Y be random variables. Prove that px,x| = 1 if and only if Y = a +bX for some a, b E R.

A: If Y= a+bX  ........(i) Then expected Value of Y:  E(Y)= a+bE(X) Multiply equation (i) by X. XY=…

Q: For the following payoff table, determine the best decision by using minimax regret and EOL.…

A: Given that: Payoff Table: Alternative State of Nature   Good  Fair Bad A 100 60 -50 B 80 50…

Q: Engineers want to design seats in commercial aircraft so that they are wide enough to fit 99​% of…

A:

Q: Dolling is a popular technique used to determine the outcome of an election prior to results being…

A: Given that  Population proportion p=0.51 Sample size n =400

Q: The following estimated regression equation based on 10 observations was presented. ŷ = 26.1270…

A:

Q: The concept of linear regression evolved from Galton's concept of "regression from the mean". The…

A: The given scatterplot compares Per Capita Meat Consumption and Colon Cancer incidence per country.…

Q: Find the probability of the indicated events if P(E)=0.3 , P(F)=0.4 , and P(F|E)=0.3   (a) P(E∩F)…

A: GivenP(E)=0.3P(F)=0.4P(F|E)=0.3

Q: K Do cars get better gas mileage with premium instead of regular unleaded gasoline? It might be…

A: To determine: How the experiment should be carried out.

Q: A hotel claims that 95% of its customers are very satisfied with its service. Complete parts a…

A:

Q: According to a 2019 study by RescueTime, people spend an average of 1.25 minutes on their smartphone…

A: given data  normal distribution μ = 1.25σ = ?97th percentile = 2σ = ?

Q: Before you begin you will need to consider the possible causes of death and design an experiment for…

A: A hypothesis is any statement which may be rejected based on a certain set of evidences.   The…

Q: A furniture company wants to know what percent of their customers are satisfied with the furniture…

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

Q: To test Hoμ = 50 vs. Ha μ< 50 using sample data with a = 43.7: Where will the randomization…

A: Given: H0 : μ = 50 Ha : μ &lt; 50 X = 43.7

Q: How do you calculate ophat? 0% b/f P(1-P) 12 OP(1-P) √n Ophat-(1-phat) √n phat-(1-phat) TL

A:

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

A: Method: Normal distribution

Q: the comic book store owner is curious in how well radio and newspaper advertisements work. A sample…

A: Given information: Consider the given results of Binary logistic regression.

Q: Using the given spreadsheet as a basis, discuss the relevance of statistical data in decision…

A: Given Information: Consider the given dataset that shows the Revenue dashboard for 2021 for…

Q: QUESTION 1 A random variable X has probability density function f(x;0) = - Ox де 0, elsewhere x>0 It…

A: Type I and II Error has utilized.