Suppose the annual salaries for sales associates from a store have a symmetric and unimodal distribution with a mean of $39000. If about 96% of associates have annual salaries between $31000 and $47000, what is the standard deviation for the annual salaries for sales associates?

Q: Jalen’s net income for the month of May was $1,600. Expense Dollar amount Rent $650 Food $175…

A: Given data: Expense Dollar amount Rent $650 Food $175 Entertainment $100 Bills $91…

Q: To the nearest whole number, what percent of respondents did not choose Dominos or Marcos as their…

A: Given that: The frequency of each respondent's favorite pizza shop is recorded and shown in the…

Q: E[Y|X] = XB Similarly, we will assume linearity of the conditional quantile functio Q(T|X) = XB₂ The…

A: The quantile regression Process: Consider Qyτ|x be the τ-conditional quantile of Y given X=x…

Q: If P[X ≤ x] s continuous in x, show that Y = F(X) is measurable and that Y has a uniform…

A: Solution

Q: Consider a system with an idling ratio of 8%. Required, determine the probability of having: i).…

A: Let λ  be the arrival rate and μ be the service rate in the system. Then the utilization factor is…

Q: The shape of a given population distribution is normal with a mean of u = 85 and a standard…

A: Answer: from the given data, Mean μ = 85 Standard deviation σ = 6.5 The distribution is normal

Q: Which of the following is not a property of a discrete probability distribution being valid? All…

A: Here we have to identify the incorrect option for discrete probability distribution

Q: The graph of a normal curve is given on the right. Use the graph to identify the values of μ and σ.

A: Given normal distribution curve is

Q: Differentiate between correlation analysis and simple regression analysis

A: Correlation analysis is a statistical method used to check how variables are correlated. Regression…

Q: ► The quantile regression estimator is the sample analog of whereby F(Y, X) is replaced by the EDF…

A: The quantile regression Process: Consider Qyτ|x be the τ-conditional quantile of Y given X=x…

Q: Compute E(x+y)  and Var(x+y) . d.  Compute the covariance and correlation for x and y . If…

A: Given that.  f(x,y) x y 0.3 90 90 0.5 20 20 0.2 40 60

Q: A soft-drink bottling company fills and ships soda in plastic bottles with a target volume of 354…

A: Given: Q1 = 356 Q2 = 357 Q3 = 360 Formula Used: Interquartile range IQR = Q3 - Q1 Outlier limits =…

Q: 6. Production lines in a manufacturing plant are set to make steel ball bearings with a diameter of…

A: a) 95% confidence interval for the difference between the mean diameters of ball bearings from the…

Q: estimate of the variance of the population was found to be 15.0 From another sample of 14…

A: Given that  n1 = 25 , S12 = 15 , n2 = 14 , S22 = 9.7

Q: A block of 100 bits is transmitted over a binary communication channel with probability of bit…

A:

Q: Consider the following regression model:        Dependent Variable: MU Sample: 134

A: Solution The given analysis is the regression analysis.

Q: 14. 15. The World Roller Coaster Census Report lists the following numbers of roller coasters each…

A:

Q: Analyze the influence of outliers The number of minutes on Instagram per week for ten 25-year-old…

A: Given: sample size n = 10 Formula Used: Standard deviation s = ∑Xi-X2n-1

Q: Find the mean of the data summarized in the given frequency distribution. Compare the computed mean…

A: Introduction: The actual mean of the data set is 58.6 degrees Fahrenheit or 58.6°F. It is required…

Q: K Claim: Most adults would erase all of their personal information online if they could. A software…

A: Given Information: Claim: Most adults would erase all their personal information online if they…

Q: Find the sample variance Given sample 20,13,4,8,10

A: The given sample is 20,13,4,8,10

Q: (b) Construct a relative frequency distribution of the data. Potholes Relative Frequency 1 2 3 4 5 6…

A:

Q: Could you help me solve this?   This exercise provides an example of a pair of random vari- ables,…

A: The following solution is provided below:

Q: The number of chocolate chips in an​ 18-ounce bag of chocolate chip cookies is approximately…

A:

Q: . Find the median of these numbers: 4, 2, 7, 4, 3.

A: We have given that,  The data set are : 4, 2, 7, 4, 3 Then,  We will find the Median (M) = ?

Q: ​(a) Compute the mean and standard deviation of the random variable​ X, the number of smokers who…

A: Given, According to an​ almanac, 70​% of adult smokers started smoking before turning 18 years old.…

Q: K A certain drug is used to treat asthma. In a clinical trial of the drug, 30 of 277 treated…

A: Data given X=30, n=277  Population proportion p=12%  Level of significance ɑ=0.05

Q: You draw one card from a standard deck. (a) What is the probability of selecting a king or queen?…

A:

Q: 4 Find the number of terms in the geometric sequence 6, 12, 24, ..., 1536

A: The general terms of geometric sequence is, an=arn-1 where, a=first term r=common ratio n=no. of…

Q: manufacturer of a computer system is interested in improving its customer support services. As a…

A: Given that  Mean = 25.09 , Variance = 144 X ~ Normal (Mean = 25.09 , Variance = 144)

Q: What is the probability that a randomly selected 45​- to 48​-year-old mother who had a live birth in…

A: The question is about probability Given : Prob. that a 45 - 48 year old mother who had fourth live…

Q: Determine the Mean Squared Error (MSE) using a 3-week simple moving average. Week Sales 73 178 82 89…

A: The data for weekly sales is given.

Q: Two fair cubic dice are rolled. Let E be the set of all outcomes in which the sum of the numbers…

A: From the provided information, Two cubic dice are rolled. Total outcomes = 6 × 6 = 36 E = The set of…

Q: 2. Researchers studying anthropometry collected various body and skeletal measurements for 507…

A: Given that We have to find the best variability:

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 249…

A: Given that: Population mean, μ=174.45 Population standard deviation, σ=6.75 Height of tallest man,…

Q: Stem (hundred thousands) Leaf (ten thousands) 1 46667789 2 3 4 s The stem-and-leaf plot above shows…

A:

Q: Based on the z-score and data below, how many percent of students' scores is equal to or lower than…

A: Since, Sample Size is 70 which is large enough so we can use Z score to calculate the required…

Q: Problem 3. A recent study of the hourly wages of maintenance crew members for major airlines showed…

A: Let random variable X be the hourly salary(in$)X has normal distribution with mean(μ)=20.5 $ and…

Q: Question 4 Given Sample: 20, 13, 4, 8, 10 1. Find the sample variance 2. Find standard deviation for…

A: Given: n = 5 Formula Used: Sample variance s2 = ∑Xi-X2n-1 Standard deviation s = s2

Q: (a) The figure to the right represents the normal curve with us 266 days and 16 days. The area to…

A: Z is known as Standard normal variable Z=( X - mean) / standard deviation

Q: Electricity bills: According to a government energy agency, the mean monthly household electricity…

A: Given, mean is 108.22 and standard deviation is 19. We will use z-standard normal distribution.

Q: 779?module_item_id=965486 Let X = the number of years a new hire will stay with the company. Let…

A: We have given that,  X = the number of years a new hire will stay with the company.  P(X) =…

Q: What is the correct wording for the P(A | B)? The probability of A and B The probability of A or B…

A: Formula Used: P(A | B) = P(A∩B)P(B) Similarly, P(B | A) = P(B∩A)P(A)

Q: Find variance  700,820,300,400,120

A: Given that : Following Data : 700 820 300 400 120 Number of observation = 5

Q: A company has 6000 arrivals of Internet traffic over a period of 13,600 thousandths of a minute. Let…

A: Given: Number of arrivals over a period of 13600 thousandths = 6000 Formula Used: P(X=x) = μx·e-μx!

Q: Number of voters 30 119 151 173 112 A E K C A P A P E K E P A P P C K A K C K 1st Choice 2ND Choice…

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

Q: Suppose that Y₁, Y2,..., Ym is a random sample of size m from Gamma(a = 3,ß = 0), where 0 is not…

A: Result:  When score function S(x;θ) written in the form  S(x; θ)=c(θ)[T-g(θ)]  Then MLE attained…

Q: A company produces optical-fiber cable with a mean of 0.5 flaws per 100 feet. What is the…

A: From the provided information, The mean number of flaws per 100 feet cable = 0.5 Mean number of…

Q: uppose there was a group of five balloons. Two balloons were chosen from the group (without…

A: There is a group of 5 balls, Two balls selected Probability given in Figure we have to calculate…

Q: se z scores to compare the given values.   In a recent awards​ ceremony, the age of the winner for…

A: Given: the age of the winner for best actor =29 the age of the winner for best actress=45 For best…