Your math test scores are 78,89,76,50,82 and 69 . The teacher says your average grade for the course is the mean of the test scores. What is your average grade? typed answer

Q: According to a government agency, 13.3% of the population of a certain country smoked in 2016. I…

A: Givenn=679x=78

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: The mean is 100 and standard deviation is 15.

Q: nd the mode of the following number of states randomly selected travelers at a service plaza visited…

A: here data score is given , 18,13,8,8,13,10,13,10,9,18. we have to find out the mode for the given…

Q: A random variable is not normally distributed, but it is mound shaped. It has a mean of 18 and a…

A: GivenMean(μ)=18standard deviation(σ)=2sample size(n)=40

Q: QUESTION 20 The time spent on social media platforms per day by adults has a distribution with a…

A: The given mean is 125 and standard deviation is 16.

Q: Calculate the measures of central tendency for the grouped data and the measures of dispersion for…

A: In a 50-question mid-term exam, 40 students from the subject Creative Leadership at Angeles City…

Q: Given the difference equation y(k + 2) − 2 y(k + 1) + = y(k) = = e(k) where y(0) = y(1) = 0, e(0) =…

A:

Q: The red blood cell counts​ (in millions of cells per​ microliter) for a population of adult males…

A: given data normal distributionμ = 5.6σ = 0.4

Q: Suppose students' ages follow a normal distribution with a mean of 21 years old and a standard…

A:

Q: at a certain school, 34% of the students will qualify for financial aid type A and 19% will qualify…

A: Given information: PA=0.34PB=0.19PA∩B=0.051

Q: Suppose the mean blood pressure for people in a certain country is 123 mmHg with a standard…

A: Answer: - Given, the mean blood pressure for people in a certain country is μ = 123 mmHg with…

Q: of CD_Rom drives and compact disk players for selected years and can be found in Glassman. Sales are…

A: *Answer:

Q: The testing times for a group of college students were normally distributed with a mean of μ = 33…

A: given data normal distributionμ = 33σ = 2   empirical rule : approximately 68-95-99.7% data fall…

Q: Suppose a dishwasher has a mean life of 12 years with an estimated standard deviation of 1.11 years.…

A: given data normal distributionμ = 12σ = 1.11n= 10

Q: The population mean annual salary for plumbers is $49,000.  A random sample of 25 plumbers is drawn…

A: We have given that Mean(µ) = 49000Standard deviations (σ) = 5800n = 24

Q: Safeway Foods is redesigning the checkout lanes in their supermarkets throughout the Midwest, and…

A: Suppose μ1, μ2 are the population means of checkout times of Design 1 and Design 2, respectively.

Q: A pharmaceutical company receives large shipments of ibuprofen tablets and uses this acceptance…

A: P(defective shipment) = p = 0.01sample size (n) = 29We have to accept the whole batch if there is at…

Q: In a normal distribution, what percentage of the values lie: 1. Below the mean? 2. Above the mean?…

A: Hi! Thank you for the question. As per the honor code, we are allowed to answer three sub-parts at a…

Q: A magazine article claims that the average cost for a take-out lunch is $9.22. You randomly select a…

A: given data μ = 9.22n = 38x¯ = 10.08σ = 2.13α = 0.08

Q: An experimental diet to induce weight loss was followed for one week by a randomly selected group of…

A: Given information: The data for weight loss for a group of 12 students are given.

Q: Credit card balances of all customers in a certain bank are right-skewed. To estimate the mean…

A: Suppose µ is the population mean balance for all customers.

Q: Heteroskedasticity arises because of non-constant variance of the error terms. We said. proportional…

A: The linear regression model is valid when it satisfies few assumptions like Linearity, Normality,…

Q: scenario and decide which (if any) of the assumptions or conditions for using the Central Limit…

A: Assuming that the appliances are homogenous and the inspector selects the washers randomly, there…

Q: of 1.7 hours. What is the probability that a randomly selected group of 35 high school students get…

A: Let X be the random variable that the sleep hours of teenagers that attend public high schools.…

Q: Suppose the mean cholesterol levels of women age 45-59 is 5.2 mmol/l and the standard deviation is…

A: Given that.   X~N( μ , ?)   μ=5.2 , ?=0.7   Z-score =( x - μ )/?

Q: In one region, the September energy consumption levels for single-family homes are found to be…

A: given  data normal distributionμ = 1050σ = 218n = 50p ( x¯ > 1075) = ?

Q: personality trait today than it was a few decades ago?  It is known that the mean population score…

A: Given that  Sample size n =25 Sample mean M=16.5 Standard deviation s=3.4

Q: e diameters of Douglas firs grown at a Christmas Tree Farm are normally distributed with a mean of 4…

A: GIVEN DATA, normal distributionμ=4σ=1.5we have to find out the given probabilities.

Q: The test scores for the analytical writing section of a particular standardized test can be…

A: Population mean μ=3.8, standard deviations σ=0.94 P(X<a)=10%  P(a<X<b)=80%

Q: What is the waiting time of a customer in the system?

A: Given that, Arrival rate (λ) = 6 customers per hr Service rate (μ) = 10 customers per hr

Q: If a population has a mean of 2.5, what is the mean of the sampling distribution if the sample size…

A: Introduction: It is required to find the mean of sampling distribution of the mean, when a sample of…

Q: A pharmaceutical company receives large shipments of ibuprofen tablets and uses this acceptance…

A: P(defective shipment) = p = 0.01sample size (n) = 29accept the whole batch if there is at most one…

Q: ← 17:43 3 of 3 Question 3 Region North FIN303 Class Test Revision(1).pdf Page 2 of 6 Table 1:…

A:

Q: (5513 seconds). Obviously Leo finished faster, but they are curious about how they did within their…

A: B) To find the z-scores for Leo's and Mary's finishing times, we can use the formula: z-score =…

Q: nd Ratios: A retrospective study of lung cancer and tobacco smoking habits in England produced the…

A: a. To estimate the odds of cancer for each of the row-categories, we need to divide the number of…

Q: The mean age of salesladies in an ABC department store is 32, with a standard deviation of 8.…

A: The question is about Tchebyshef's theorem Given : Mean age of salesladies ( μ ) = 32 Std. deviation…

Q: Suppose that Y₁,..., Y₁~ Poisson(λ), λ > 0, are independent. Prove by calculation that the common…

A: Given that Let Y1,Y2...Yn be the Poisson distribution Then we have to show that  the point…

Q: A student is to select three courses for next semester. If this student decides to…

A: Given that 7 economic courses, 9 mathematics courses, and 4 computer courses, We have to select 3…

Q: Continuation of the previous exercise I sent a picture about. Suppose now that n = 4 and it is…

A: This question requires us to calculate the value of the function A. = f (y; A) at a few points…

Q: st K Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and…

A: We have given that Mean(µ) = 100Standard deviations (σ) = 15X ~ N (µ, σ )= N(100, 15)

Q: Suppose a college admissions test is normally distributed with a mean of 500 and a standard…

A:

Q: The mean height of Americans in 1776 was 67 inches with a standard deviation of 3 inches.  George…

A: Given,mean(μ)=67 inchesStandard deviation(σ)=3 inches   Empirical rules:1) P(μ-σ<X<μ+σ)=68%2)…

Q: A population of N = 25 scores has ΣX = 40 and ΣX2= 120. For this population, what is the value of SS…

A: It is given that  N = 25 ΣX = 40ΣX2= 120

Q: a) Calculate an estimate for the mean of the waiting times, by using an appropriate approximation to…

A: Here waiting time of the 128 customers is given. Waiting time f 0-30 29 30-60 17 60-90 17…

Q: An article reported the following frequencies with which ethnic characters appeared in recorded…

A: We know that, the degrees of freedom of Chi-square is    df=n-1  where n be the number of rows. Here…

Q: 2. The town of Sylva recently started a single-stream recycling program. The town provided 60-gallon…

A: The question is about hypo. testing Given : No. households to which 60 gallons recycling bins…

Q: Suppose we want to compare the length of stay(in days) in the hospital for patients with same…

A: Given information: The data for the length of stay for patients with the same diagnosis at two…

Q: Match the scatter plot on the left to its proper correlation on the right. 25 20 15 10 5 0 2 4 6 8…

A: Correlation is present if the points follow an upward or downward trend.

Q: You have estimated the following HPI stochastic process model dHPI(t) = a + BHPI(t-1)+ yo(t)dz…

A: This question is about estimating a stochastic process model for a housing price index (HPI). The…

Q: A quality control technician is checking the weights (in grams) of a Nescafe Gold Blend Coffee. She…

A: Answer  Given  50.3,49.6,51.3,49.8,51.3,49.9,51.1 n=7 sample size denoted as [n]. confidence…