In a job fair, 5,000 applicants applied for a job. Their mean age was found to be 28 with a standard deviation of 4 years. A. Draw a normal curve distribution showing the z-scores and the raw scores. B. How many applicants are below 20 years old? C. How many applicants are above 32 years old? D. How many applicants are above 20 years of age? E. How many have ages between 24 and 32 years?

Q: The value of the variance is always not positive. true Error

A: True  Followings are the Explanation of the Question  1) Variance is the Squared deviation from the…

Q: The amount of pollutants that are found in waterways near large cities is normally distributed with…

A: GivenMean(μ)=9.1standard deviation(σ)=1.7sample size(n)=35

Q: Max owns a car. With probability 0.1 she gets into an accident and is left with $2500 (net). If she…

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

Q: Use the given data to find the minimum sample size required to estimate a population proportion or…

A:

Q: Assuming that averages on a statistics exam are normally distributed, arrange the following in…

A: here use basic of normal distribution and percentile

Q: A random sample of 40 drivers in Johor were asked if they favor the use of RON95 or RON97 fuels for…

A:

Q: Based on a survey, assume that 46% of consumers are comfortable having drones deliver their…

A: p  denotes sample proportion and q=1-p

Q: survey of 64 companies revealed that the mean price charged for a given test was $13 with a standard…

A: From the given information we conduct Hypothesis test.

Q: CNNBC recently reported that the mean annual cost of auto insurance is 977 dollars. Assume the…

A: GivenMean(μ)=977standard deviation(σ)=252sample size(n)=36

Q: 10.P(Z<0.11)=_

A: We will use Standard Normal table to find the required probability.

Q: Determine the critical value(s) for this hypothesis test. Round the solution(s) to four decimal…

A: Hypothesized Population Mean (µ) = 16 The provided sample mean is = 16.02 Sample standard deviation…

Q: A work sampling study requires an acceptable error level of 10 percent and z = 2 for 95.45 percent…

A:

Q: In a certain county, the average annual income for a home provider involved with an online rental…

A:

Q: by pany robability that the proportion of defective television

A: Given: EX=0.25VX=0.0375 P(0.2 &lt; X &lt; 0.5)

Q: State the null and alternative hypothesis. Describe the Type I and Type II errors. Boxes of certain…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer  first…

Q: Assume that a procedure yields a binomial distribution with a trial repeated n = 5 times. Use some…

A:

Q: THE VALUE OF THE VARIANCE IS ALWAYS NOT POSITIVE. TRUE ERROR

A: The variance is square of standard deviation

Q: H. Find the expected value of Z = (X2 + y2)₂. Let X and Y be random variables with joint density…

A: X and Y are random variables with joint density function given by fx,y=4xy      0&lt;x,y&lt;1

Q: What is the expected average height of 8 year old boys, using the regression equation?

A: From the given information, the obtained regression equation is y=27.84+2.573x.

Q: A government official estimates that the mean time required to fill out the long form of the United…

A: Null hypothesis: The average weight has gone down. H0 : μ =36. Alternative hypothesis: H1 :μ  ≠ 36

Q: Determine the goodness of fit of a binomial distribution to the following data, using a significance…

A: Given that  X      f  0    30 1     62 2      46 3      10 4       2   We have to conduct chi square…

Q: THE DICE IS THROWN 180 TIMES, THE PROBABILITY THAT THE NUMBER 6 APPEARS FROM 40 TO 45 IS 0.1359,…

A: Given that ; Sample size (n) = 180 A dice is thrown then probability of 6 is appear =  1/ 6 By using…

Q: For the past ten years, the daily high temperature on January 1 in a mountain town (in degrees…

A: As per our guidelines we are suppose to answer only three sub parts. Arrange the given data in…

Q: 7. If the range of the set of scores is 28 and the lowest score is 9, what is the highest score? a.…

A: 7:  Range of data set=28 and lowest value =9  Then to find highest value ?

Q: Assume that when adults with smartphones are randomly selected, 38% use them in meetings or classes.…

A:

Q: X₁, X2,...,xn is a random sample from the population that follows a Poisson distribution with the…

A: Given information: Given x1, x2, x3,................... xnis  a random sample from the population…

Q: Prior to the initiation of a student retention program against student dropout in a metropolitan…

A: 1) The parameter of the interest is the population proportion of the young people in the city had…

Q: A survey of 52 students in grades 4 through 12 found 65% have classroom Wi-Fi access. Find the 90%…

A: We have given that,  Sample size (n) = 52 and sample proportion (p̂) = 65% = 0.65  Then,  We will…

Q: 4-53. The line width for semiconductor manufacturing is as- sumed to be normally distributed with a…

A: GivenMean(μ)=0.5standard deviation(σ)=0.05

Q: A civil service exam yields scores which are normally distributed with a mean of 81 and a standard…

A: Solution-: Given: μ=81, σ=5.5 We want to fin x such that, P[X&lt;x]=0.15

Q: Your sample consists of 79 subjects, with 68 successes. Calculate the test statistic, rounded to 2…

A: It is given that  Population proportion, p = 0.89 Sample size, n = 79 Favourable cases, X = 68…

Q: Use the graphs in Figure 3 below to answer the questions. Select the letter of the appropriate…

A: Given two frequency histograms.

Q: able: Physicians per 10,000 Population and Life Expectancy) The table contains a subset of data…

A: The following information has been given: Physicians/10,000 people   (x) Life expectancy (y)…

Q: You are a research assistant at a zoo.  The question of your study is "Has the proportion of baby…

A: The obtained z-score is 1.89.

Q: Most medical schools require applicants for admission to take the Medical College Admissions Test…

A: It is given that mean and standard deviation are 500 and 10.6, respectively.

Q: You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of…

A:

Q: X P(Z P(Z) THEN 1.8626 = (+P) - 0 < X<N. CORRECT O ERROR O

A: Solution

Q: Prove: Let X₁, X₂,..., X„ be a r.s. from N(µ,σ²) and Y₁,Y,₂,..., Y be another independent r.s. from…

A: Given the independent random variables X1, X2, . . . , Xn1~Nμ1, σ12 Y1, Y2, . . . , Yn2~Nμ2, σ22

Q: ms produced by each machine are randomly selected. Let X be the number chine 1 produces 5% defective…

A: Given X~B(n, p)

Q: In a recent​ year, a hospital had 4142 births. Find the mean number of births per​ day, then use…

A: Solution-: Given : Mean number of birth per year (365 days) is 4142 We want to find, (a) The…

Q: Suppose the average weight for a green apple is 153 grams, with a standard deviation of 27 grams,…

A: GivenFor Green apple Mean(μ)=153standard deviation(σ)=27For Red appleMean(μ)=200standard…

Q: The mean amount of time to build a store is 60 days. A claim is made that the mean amount of time…

A: The following information has been given: The population mean is μ=60. The sample mean is x¯=55. The…

Q: Provide an example for each of the following types of bias. Use newspaper clippings or magazine…

A: Since we only answer up to three sub parts of a problem, we'll be answering the first three sub…

Q: Fill in the blank. A A dis is used to test the hypothesis that an observed frequency distribution…

A:

Q: The dice is thrown 180 times, the probability that the number 6 appears from 40 to 45 is 0.1359,…

A: Given that ; Sample size ( n) = 180 Probability of 6 is appear (p) = 1/ 6 By using binomial…

Q: Critical values for quick reference during this activity. Confidence level Critical value 0.90…

A: Solution-: Given: n=1000, x=351, c=0.95 We want to find 95% C.I.?

Q: How does the average height for boys change as boys get older? According to the Physician's…

A: From the above data  (a) Write the simple linear regression equation for the line that best…

Q: stion 10: You are conducting a study to determine if there is a significant difference between…

A: Given data,n1=60x1=160s1=7n2=55x2=155s2=8Calculate the test statistic t ?

Q: e. For the 45 customers, find the probability that their average spent is more than $7.3424. 0.5514…

A: Explanation: e). The probability that 45 selected customer will spend more than 7.3424 is = P(X &gt;…

Q: A research center poll showed that 82% of people believe that it is morally wrong to not report all…

A: It is given that the probability that the people believe that it is morally wrong to not report all…