Exercise 4.1. The average weekly income of 1,500 workers is P1,500 with a standard deviation of 80 pesos. Assuming that the weekly incomes are normally distributed, find the number of workers who earn: . . between P1,440 and P1,640; and P1,350 at most. At least how much should a worker receive to be included in the top 10%earners?

Q: There are 22 students in a high school senior class. In how many ways could the yearbook choose the…

A: Given that: Total number of students in a high school senior class, n = 22.

Q: a sample of size n= 10 is drawn from a population. that data is shown below.…

A: a. The sample size is n = 10.

Q: Evaluate the following formula for x₁ = 97.78, X₂=97.27, μ₁ −μ₂ = 0,0₁ = 0.91, 0₂ = 0.69, n₁ = 18,…

A: Data given

Q: why does in a it didn't use 1-p(z>-1.26)? What is the right way to use "1-probability" of z? Is it…

A: We can use "1 - probability " when there is more than z values, first we convert it into less than…

Q: n a the normally distributed variable X with mean = 15 and standard deviation = 2.5, find: The…

A: X is randomly distributed with a mean of 15 and a standard deviation of 2.5; μ=15σ=2.5

Q: Suppose that the number of gallons of milk sold per day at a local supermarket are normally…

A: Answer:- Given, Standard normal distribution with mean μ = 496.1  and σ = 23.15                Find…

Q: Anticipated consumer demand in a restaurant for free-range steaks next month can be modeled by a…

A: GivenMean(μ)=1200 poundsstandard deviation(σ)=100 pounds

Q: X 210 f(x) = - {} 0 8 < x < 22 otherwise

A: Given that  Pdf of X is  f(x) = { x/210  , 8 &lt; x &lt; 22

Q: The percentage of heights that are from 67.95 to 71.95 inches is: ____. b. The percentage of heights…

A:

Q: The following table represents a grouped frequency distribution of the number of hours spent on the…

A: Grouped frequency distribution: In this style, the information is organised and divided into…

Q: The following bar graph represents the undergraduate majors for 150 law students. Use the graph to…

A: The length of the bar graph represents the number of students taken a particular major.

Q: The given data set is: 10 19 5 5 Find the median. 16 7 19 22

A: Ans#- The given data set   10 19 5 5 16 7 19 22 Find the median.

Q: 03: PVC pipe is manufactured with a mean diameter of 1.01 inch and a standard deviation of 0.003…

A: Answer: From the given data, Mean (μ) = 1.01 Standard deviation (σ) = 0.003 For a random sample of…

Q: identifying the sample space for a couple having four​ children, find the probability of getting…

A: It is given that the same space of three children. Here, need to find out the sample space of four…

Q: Exercise 4. Suppose we test Ho: P = 0.35 versus Hap # 0.35 and the random sample of n-64 gives a…

A:

Q: c) A research conducted by SSTA022 Class representative at the University of Limpopo indicates that…

A: There are two independent samples which are active and inactive African men. We have to test whether…

Q: on a recent quiz, the class mean was 73 with a standard deviation of 2.1. calculate the z-score for…

A: The mean is 73 and standard deviation is 2.1.

Q: Most graduate school of business requires applicants for admission to take the GMAT examination.…

A:

Q: 2. Three machines A, B, and C produce respectively 50%, 30%, and 20% of the total number of items of…

A:

Q: In the last several weeks, 25 days saw rain and 29 days saw high winds. In that same time period, 13…

A: It is given that n( rain ) = 25 n( wind ) = 29 n( rain and wind ) = 13

Q: Q2: The number of cracks in a section of interstate highway that are significant enough to require…

A: Given that   We have to find  a.. The probability that there are no cracks that require repair in 4…

Q: Bacterial growth can be exponential. Let X = time in hours & Y = the number of bacteria. Using Excel…

A: I solve this question using Excel. Excel Command:- Enter the data to the excel sheet -&gt; select…

Q: r=√r2=√0.852

A: Given: Coefficient of determination r2 = 0.852 Formula Used: Correlation coefficient r = Coefficient…

Q: Q5) b) In an advertising award, there are 3 winners out of 100 cards. If a person purchases 13…

A: n be the sample size=100,  3 cards winner out of hundred Let X be the number of purchase cards…

Q: What is the probability that it has 6 green and 1 red balls?

A: It is given that  Green balls = 700 Red balls = 300 Total balls = 1000

Q: Find the mean of the distribution shown below: (X,P(X)  = (1,0.58); (3, 0.42) X 1 3 P(X) 0.58…

A: The given distribution is, X 1 3 PX 0.58 0.42

Q: Consider a regression model of workers' wages using vector-matrix notation and education data. Data…

A: Given information: Person  Wage Constant  Education 1 1.82 1 13 2 2.14 1 15 3 1.56 1 10…

Q: Question Which of the given values is a solution to the equation 8n + 10 = -24n+7? Select the…

A: The following equation has been given: 8n+10=-24n+7 We need to solve for the value of n.

Q: Arthur summarized the number of new enrollees (per day) for the past April and May and arrived at…

A: Ans#- Given, Authur summarised the number of new enrollees (per day) for the past April and May…

Q: The graph of a normal curve is given. Use the graph to identify the value of μ and σ. The value of…

A:

Q: Henrique Correa's bakery prepares all its cakes between 4 A.M.and 6 A.M.so they will be fresh when…

A:

Q: (1) Multivariate model: ŷ = ß0 + Â1x1 + ß2x₂ (2) Univariate model: y = 50 + 51x1 IC <C

A: Angrist Bias Confounding Omitted variable bias Residual Variation heteroskedasticity…

Q: Table attached shows the historical returns for Companies A, B and C Estimate the average return…

A: to solve this problem we use excel :

Q: The given data set is: 10 19 5 5 Find the median. 16 7 19 22

A: It is given that  The data is  10, 19, 5, 5, 16, 7, 19, 22

Q: find the range for this list of numbers. 43,33,42,5,15,35,13,48,92,86,54,75,41,96,51

A: The question is about measures Given : Data : 43, 33, 42, 5, 15, 35, 13, 48, 92, 86, 54, 75, 41, 96,…

Q: Let X to be a random sample from a distribution with a probability density function given (0x0-1, if…

A: Given information: fx,θ=θxθ-1, 0&lt;x&lt;1 Consider, EX=∫01xfxdx       =∫01x*θxθ-1dx      =∫01θxθdx…

Q: Suppose the lengths of human pregnancies are normally distributed with μ=266 days and σ=16 days.…

A: The population mean is 266 and standard deviation is 16.

Q: i) Find the conditional distribution of the likelihood function given the function of the statistic,…

A:

Q: a) How many standard deviations from the mean would a car going the speed limit be? b) Which would…

A:

Q: A university is putting together a hiring committee of 6 members for the next university provost.…

A: We have given that  Number of eligible administrative personal = 12Number of eligible faculty…

Q: Given a the normally distributed variable X with mean = 15 and standard deviation = 2.5, find:…

A: Given data, normal distribution ,μ=15σ=2.5here we have to find out p(13&lt;x&lt;16) =?

Q: Q3: PVC pipe is manufactured with a mean diameter of 1.01 inch and a standard deviation of 0.003…

A: Given that  Mean = 1.01 , Standard deviation = 0.003 n = 9

Q: The answer was right

A: I am solving it again to cross check whether it is right or wrong Class Frequency (f) Mid value…

Q: Q1) The subjects' score of a student at the final exams were as in the following tables. Therefore,…

A:

Q: If X is normally distributed with mean u and variance o2, it is generally described as x~ N(1,0²).…

A: If X be a normally distributed.X~N(μ,σ2)Given; X~N(2,9)So, mean(μ)=2 and standard deviation(σ)=3

Q: Variable Label N X y Mean Std Dev Minimum Maximum 'speed' 19 39.7368421 15.7650884 15.0000000…

A: Given information: Summary statistics of the data are given. Sample size…

Q: Q3: PVC pipe is manufactured with a mean diameter of 1.01 inch and a standard deviation of 0.003…

A: Given that  Mean = 1.01 , Standard deviations = 0.003  Sample size = n = 9

Q: d. Given the preceding results, what are the percentage of women and the percentage of men in the…

A: only d From given data we have : P(A1)=47%=0.47P(W|A1)=50%=0.50P(W|A2)=45%=0.45

Q: The minimum aptitude test score needed to be considered a genius is points. (Type an integer or a…

A: It is given that Mean, μ = 100 Standard deviation, σ = 12

Q: Murder Rates The data represent the murder rate per 100,000 individuals in a sample of selected…

A: