A population of values has a normal distribution with μ = 24.8 and ♂ = 79.8. You intend to draw a random sample of size n = 142. Please answer the following questions, and show your answers to 1 decimal place. Find the value separating the bottom 10% values from the top 90% values. Find the sample mean separating the bottom 10% sample means from the top 90% sample means.

Q: Assume the random variable x is normally distributed with mean μ=82 and standard deviation σ=4. Find…

A: Given the random variable x is normally distributed with mean μ = 82 and standard deviation σ =…

Q: 57. An economist is interested in studying the incomes of consumers in a country. The population…

A: The population standard deviation is known to be $1,000.A random sample of 50 individuals.A mean…

Q: Consider a sample of size 15 drawn from a normally distributed population. If the sample mean is 20…

A: Given thatsample size, n= 15sample mean, M= 20sample standard deviation, s=4population mean,

Q: 3.2-2. Telephone calls arrive at a doctor's office according to a Poisson process on the average of…

A: Telephone calls arrive at a doctor's office according to a Poisson distribution , 2 calls in every 3…

Q: For which one of the following situations would a Wilcoxon​ Rank-Sum (or​ Mann-Whitney) test be​…

A: It is required to identify the situation in which Wilcoxon Rank-Sum test, that is, Mann-Whitney test…

Q: Assume a standard Normal distribution. Draw a well-labeled Normal curve for each part. a. Find the…

A:

Q: The director of research and development is testing a new medicine. The director claims that the…

A: The objective of this question is to determine whether there is sufficient evidence to support the…

Q: An interactive poll found that 312 of 2,282 adults aged 18 or older have at least one tattoo. (a)…

A: In the poll it is found that 312 of 2282 adults aged 18 or older have at least one tatto.

Q: Determine the two x2²-values that divide the area under the curve into a middle 0.95 area and two…

A:

Q: A cyclist is tracking weekly mileage while training for a race. The table models the number of…

A: x(weeks)01234y (miles)607286.4103.68124.416

Q: what is the X value? please

A: Given information:n=25 sample size

Q: For your study on the food consumption of teenage males, you randomlyselected 20 males and asked…

A: The objective of this question is to test the claim that teenage males drink fewer than five…

Q: For the given scenario, determine the type of error that was made, if any. (Hint: Begin by…

A: The objective of the question is to determine if an error was made in the hypothesis testing…

Q: The director of research and development is testing a new medicine. She wants to know if there is…

A: The objective of the question is to interpret the results of a hypothesis test in the context of a…

Q: Show that the expected value of a geometric distribution is P

A: Suppose the variable of interest is x, where x follows a geometric distribution.

Q: Fx (x)₁ 1 78 34 20100 + 12 + 00100 + 11 + 1 + 2 3 + 4 Fx (x) → 1 as xx + Cr. : 5 X

A: From the given graph, the PMF of X can be written as

Q: What is the smallest sample size that guarantees that the margin of error is less than 5% when…

A:

Q: Test the claim below about the mean of the differences for a population of paired data at the level…

A: We have given that the samples are random and dependent, and the population is normally…

Q: C2. Let X be a random variable. (a) Let YaX be another random variable. What is EY, in terms of μ =…

A:

Q: Estimated Sales Volume = 46.22 +0.45(Advertising Expenditures If the company has a target sales…

A: It is given that Estimated Sales Volume = 46.22 + 0.45(Advertising Expenditures)

Q: Hypothesis Tests The t-test below was conducted on measurements from a high performance ceramics…

A: The high performance ceramics experiment with goal of characterizing the effect of griding…

Q: Use the normal distribution and the given sample results to complete the test of the given…

A: Given,Hypotheses are-H0 : p = 0.3 vs Ha : p < 0.3n = 199Level of significance, α = 5% = 0.05

Q: The heights of adult men in America are normally distributed, with a mean of 69.4 inches and a…

A: Disclaimer: Since you have posted a question with multiple subparts, we will solve first 3 subparts…

Q: What is the expected frequency for each category in the table below? Police are not Approachable Not…

A: Policies are approachablePolicies are not approchableRow TotalNot afraid at all304070somewhat…

Q: Does the population proportion and sample proportion always have the same value?

A: The question is about parametric inference.Introduction :Population proportion :The value of…

Q: Assume the random variable X has a binomial distribution with the given probability of obtaining a…

A: n=17p=0.6A random variable x~Binomial(n,p)P(X=x)=(nk)∗(p)x∗(1−p)n−x;x=0,1,...,n

Q: A sample of size n= 60 is drawn from a population whose standard deviation is o = 33. Part 1 of 2…

A: The population standard deviation is given to be σ=33.The sample size, n=60.The objective is to…

Q: A high school baseball player has a 0.285 batting average. In one game, he gets 5 at bats. What is…

A: The provided information is as follows:The probability of success is .The total number of bats is

Q: 61% of all Americans live in cities with population greater than 100,000 people. If 37 Americans are…

A: In this case, each of the Americans has the only options of "living" (determined as success) or 'not…

Q: Why is the answer for part C equal to 3(σ2+μ2) and not 2(σ2+μ2)?

A: Given that: Let X1,X2,X3 be random variables such that E(Xi) = μ and Var(Xi) = σ2

Q: The following table gives the city and highway mileages (miles per gallon) for 22 two-seaters listed…

A: Consider Y be the highway mileage and X be the city mileage.The data on X and Y is given as…

Q: A city has just added 80 new female recruits to its police force. The city will provide a pension to…

A: A city has just added 80 new female recruits to its police force. A consulting actuary makes the…

Q: need help ,result 263.542 is marked as incorrect Estimate the retails sales in the U. S. in 2014…

A: The objective of the question is to estimate the retail sales in the U.S. in 2014 using the given…

Q: 1) Construct a 99% confidence interval for the mean difference in the number of runs scored by…

A: The formula for two sample t-test confidence interval is,Where

Q: eague A teams visit League B teams, the League A pitcher must bat. So, if the DH does result in more…

A: The data values given are shown below:League A parkLeague B…

Q: A hotel has 810 rooms. Tonight, you will have 72.0987654%  of your rooms occupied.  How many rooms…

A: A hotel has 810 rooms and 72.0987654% of your rooms occupied.

Q: Question 1: Data For the geometric model of exercise sheet 5, question 2, suppose that for a prior…

A: Given that the prior distribution for the geometric model is a distribution.

Q: A process to make dental floss produces spools with a desired mean length of 45.7 m (50 yds). The…

A: Mean length =45.7mStandard deviation =0.01mn=50X=1

Q: Use the gas prices data set below to calculate a 3-month Weighted Moving Average (WMA) forecast for…

A: The weights of 0.6, 0.3 and 0.1 for the 3-month weighted moving average.

Q: The table below shows the number of cars sold last month by seven employees at Concord Motors and…

A: The formula of the predicition interval is,where, denotes the predicted value of ydenotes the…

Q: Past studies have indicated that the percentage of smokers was estimated to be about 34%. Given the…

A: Given,Past studies have indicated that the percentage of smokers was estimated to be about 34%. That…

Q: Assume the hold time of callers to a cable company is normally distributed with a mean of 3.2…

A: From the provided information,

Q: Chapter 5: One hundred insects of a particular species were put in a chamber and exposed to an…

A: "Note: If you have posted a question with multiple sub-parts, we will solve the first three…

Q: Suppose that you calculated the sample size needed to estimate a population proportion within a…

A: Given that,We have calculated the sample size needed to estimate a population proportion within a…

Q: 1213.98 (Experience) Suppose an employee with 14 years of education has been with the company for 8…

A: It is given that Estimated Salary = 10950.20 + 2769.6(Education) + 1213.98(Experience)

Q: Based on a random sample of n = 32 online orders at Guiseppe's Pizza, the mean amount of the order…

A: It is required to find the margin of error for the 99% confidence interval of the mean, and then…

Q: Farmer Joe has another idea. His plants have been growing really well while using water, but maybe…

A: Farmer joe conduting an experiment to compair the yield of tamato plants watered with gatorade to…

Q: In a study of 150 accidents that required treatment in an emergency room, 36% involved children…

A: From the provided information,Confidence level = 99%

Q: help with 12.2

A: Patient FallsUnit IUnit IIUnit IIIWeek 1213Week 2121Week 3230Week 4222Week 5312Week 6101Week…

Q: Level of measurement for  I.V.: Brushing your teeth  D.V: The number of cavities.

A: The objective of the question is to identify the level of measurement for the given independent and…