In a study on drug use in the prison population carried out in 2006, it was found that 63% of inmates had consumed alcohol one month before entering prison. In a new survey of 4,985 inmates conducted in 2011, 3,227 reported having consumed alcohol in the 30 days prior to admission. Knowing that the population in 2011 was 71,387 individuals, we want to know with a confidence level of 98% if the percentage of inmates has suffered differences during the considered period. Calculate the p-value and interpret the value obtained

Q: The amount of calories consumed by customers at the Chinese buffet is normally distributed with mean…

A: Given data mean=2941 standard deviation=556

Q: Explain the differences between x-bar and R-charts. How can they be used  together and why would it…

A: X-bar and R-chart given

Q: 4.35. A randomly selected sample of bicycle helmets was tested for impact resistance. Given the data…

A: 4.35) Given: Sample size n=100 Sample mean x¯=276 Sample standard deviation s=15 Confidence level is…

Q: The hazard-rate function, ny, given by: 0 ift

A:

Q: Consider 2 sorted lists of size 50 and 60 respectively. Find the number of comparisons needed in the…

A: Given  Two sorted list of size 50 and 60 respectively. We need to determine the number of…

Q: For the following information on a data set: Measurement Class .00- .75 .75-1.50 1.50-2.25 2.25-3.00…

A: From the given table, the relative frequency for the measurement class 6.75-7.50 is 0.09, the…

Q: rce professionals concerning challenges they faced in the​ workplace, 319 said that employee​…

A: a)  We need to construct the 95\%95% confidence interval for the population proportion of human…

Q: A researcher constructs a confidence interval using the value z*=1.44. What confidence level does…

A: From the above data  We are given that the critical value  Z*=1.44

Q: The fish population of a small lake is has been found and is summarized in the table below. One fish…

A: Given Total =N=1000

Q: Sam is trying out for a local bowling team. They require Sam to score an average of 200 per game. If…

A:

Q: Given are the set of Y (price) and X (demand) of a certain commodity. X- {9,7,8,9,3,2} and Y-…

A: As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost other…

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 300…

A: Obtain the 99% confidence interval for the proportion of adults residents who are parents in this…

Q: . What is the distribution of X? X - N( D. Find the probability that an indoor cat dies when it is…

A: Given Mean =13 Standard deviation=2.3

Q: If a public school is selected, what is the z-value  that the number of students enrolled is greater…

A: It is given that  Mean, μ = 468 Standard deviation, σ = 87 Sample size, n = 38 Z-Score, Z = ( X - μ…

Q: 4. In a test designed to assess small motor coordination, kindergarten pupils are timed on their…

A: 4) Given that, Consider that approximately 97.5% of the kindergarten pupils complete the task The…

Q: INSTRUCTION: Classify the following researches based on the different types of research. NOTE: (no…

A: A. Experimental  B. Experimental C. Non experimental

Q: If you have a set of samples S= 0, 0, 1, 0, 1, 0 from a binomial distribution where P(x=0) = 1-μ and…

A: Given: A sample S=0, 0, 1, 0, 1, 0 is from a Binomial distribution where Px=0=1-μ and Px=1=μ.

Q: a. In the analysis of a scatterplot, the element/s that should be considered direction strength of…

A: a. In the analysis of scatterplot, each scatterplot has a horizontal axis and a vertical axis. one…

Q: In a survey of 3,751 adults concerning complaints about​ restaurants, 1,512 complained about dirty…

A: Solution Given That, In a survey of 3,751 adults concerning complaints about​ restaurants, 1,512…

Q: The  µ  is less than 10 mins per day

A: In the given scenario, a retailer randomly selected 25 employees to examine their personal phone…

Q: ume the balance is growing according to the exp variable x represents the total number of month ce…

A: Let x represents the total number of monththen x=45.4 months.The function is given…

Q: 2. For the following information on a data set: Measurement Class .00-.75 75-1.50 1.50-2.25…

A:

Q: The following is a regression of credit scores based on an individual's age, income, their location…

A: Given data, The following in a regression of credit score based on an individual age, income, their…

Q: 4.26. A music group has 7 members. How many subgroups of 4 members can be formed from the music…

A: 4.26)

Q: The effectiveness of a blood pressure drug is being investigated. An experimenter finds that, on…

A: ANS GIVEN                    Average  (X¯) =47 ,  sample  size (n)=15,   standard deviation(s)=18…

Q: let X denote a random variable that has a Poisson distribution with mean y = 3 find p(x≥4/x≥2)

A:

Q: Functionally important traits in animals tend to vary little from one individual to the next within…

A: Solution Given That, Functionally important traits in animals tend to vary little from one…

Q: and standard deviation 1.8 ppm. 38 randomly selected large cities mal places where possible. at is…

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

Q: he amount of calories consumed by customers at the Chinese buffet is normally distributed with mean…

A:

Q: 1.    Suppose a professor gives an exam to a class of 40 students and the scores are as follows.…

A: As per our guidelines we can solve first question and rest can be reposted. Solution-: Given data:…

Q: 6. A discrete random variable can assume 5 possible values, as listed in the accompanying…

A:

Q: A random sample of 500 adult residents of Maricopa County found that 361 were in favor of increasing…

A: It is given that, a random sample of 500 adult residents of Maricopa country found that 361 were…

Q: 7. Let Z(x) be a stationary random function. Show that y(h) = C(0) - C(h) 8. Let Z*(x) be a…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: The variation. curve describes are due to: a. Nonassignable causes b. Catastrophic failure c.…

A: We know that in general, the random things follow Normal distribution for e.g.-if you collect…

Q: A class of eleven people received the test scores shown below, sorted by score. 32 51 69 73 74 75 82…

A: The data is arranged in ascending order.

Q: - and 3 4.8 and 3.5 4 and 3.33 18 or

A: Given Data = ,1,7,3,3,6,4

Q: Which of the following tests assume some knowledge of a known distribution? a. Mann-Whitney b.…

A: Here we have given the question about the tests. We have to identify which of the following tests…

Q: 3. Provide two examples of the following: Populations Quantitative data Qalitative data.

A: To provide examples for Populations, Quantitative data, and Qualitative data

Q: A box contains a total of 9 tickets. One ticket has 10 written on it, four tickets have -1 written…

A:

Q: ou want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: Sketch the region corresponding to the statement P(-1.6 < z < 0.1) Shade: [Between two values. Click…

A: Given  Two normal distribution graphs.we need to sketch the corresponding region according to the…

Q: Is it OK to sacrifice the display of our data in a chart, table, or graph. What's most important is…

A: Given  A true or false question based on data visualization.

Q: INSTRUCTION: Classify the following researches based on the different types of research. (NO NEED…

A: Quantitative :   if information can be expressed in numbers. (something that can be counted)…

Q: The designer of a new sheet-metal stamping machine claims that her new machine can turn out a…

A: Given that  For standard machine  n1= 9 x̄1=35.22 s12=24.44 For New machine n2=9 x̄2=31.56…

Q: b. The following statements are true EXCEPT

A: a.) All of these

Q: d. If one randomly selected runner is timed, find the probability that this runner's time will be…

A: Given X~N(23,2.4) x̄~N(23,0.3578) ∑x~N(1035,11.510) Note: According to Bartleby guidelines expert…

Q: If Xbar=81​,S=20​,and n=36​,and assuming that the population is normally​ distributed, construct a…

A:

Q: Travelers who have no intention of showing up often fail to cancel their hotel reservations in a…

A: The sample mean is calculated as follows: x=∑xn  =18+16+16+16+14+18+16+18+14+1910  =16.5

Q: What is the best estimate of the mean household income in this county?

A:

Q: The following data show the monthly rental price (in $) for a random sample of one- bedroom…

A: Descriptive statistics