Refer to the sorted data speeds below. Find the 40th percentile, denoted by P40.​ 15.9​ 19.3​ 19.4​ 20​ 20.1​ 21.0​ 21.0​ 21.6​ 21.6​ 23.2​ 24.5​ 24.6​ 24.8​ 25.5​ 25.8​ 25.8​ 25.9​ 26.1​ 26.1​ 26.7​ 27.1​ 27.3​ 27.4​ 27.4​ 28.0​ 28.3​ 28.4​ 28.5​ 29.1​ 29.3​ 29.8​ 29.9​ 30.4​ 30.8​ 30.8​ 31.1​ 31.2​ 31.4​ 31.8​ 32.7​ 33.3​ 33.3​ 33.5​ 33.6​ 34.5​ 36.5​ 36.7​ 37.4​ 38.9​ 45.4​

Q: (a) Compute the mean μx. Round the answer to three decimal places as needed. μx = Part: 1/3 Part 2…

A: Let X be the number of occupants.The probability distribution of X is given…

Q: Question 3 a) A traffic survey was carried out to establish a vehicle count at an intersection. A…

A: Vehicle count(x)31532357128816185585472563428445543349621523535725824243564693212635353763756

Q: If the A x B interaction is significant, then at least one of the two main effects also must be…

A: It is given that the A x B interaction is significant. So, if we assume that A and B are two…

Q: Determine the sample size required to estimate a population mean to within 19 units given that the…

A: It is needed to find the sample size based on the given confidence level, margin of error and…

Q: 9.4.5 In a breeding experiment, white chickens with small combs were mated and produced 190…

A: The given frequency distribution of the type of chickens with the defined attributes as…

Q: Please calculate the between-group degrees of freedom.

A: There are total 4 groups, each containing 12 respondents.

Q: Given ΣΧ = 120, ΣΥ = 367, ΣΧ2 = 3070, ΣΥ2 = 27517, ΣΧΥ = 9098 and n = 5. 1) The slope of the…

A: Comment: As per the our company guidelines we are supposed to answer only three subparts. Kindly…

Q: A simple random sample of size n is drawn from a population that is normally distributed. The…

A: Given:Sample mean, ()= 18.7Standard deviation, (s )= 4.3

Q: One hundred persons were asked, "Do you favour regional integration?". Of the 35 that answered "no"…

A: From the survey following results were given:Total number of persons involved in the survey, Total=…

Q: c. The p-value = 0.0101 x (Please show your answer to 4 decimal p

A: Test statistic t = -2.813Null and alternate hypothesisH0:μ1=μ2H1:μ1≠μ2

Q: Consider a data set that has a mean of 17 and a standard deviation of 7.2. According to Chebyshev's…

A: μ=17,σ=7.2

Q: Log(Wagei) = α + β1Educationi + β2Femalei + β3Non Whitei + β4Educationi × Femalei + εi For males,…

A: The given regression model is:Log(Wagei) = α + β1Educationi + β2Femalei + β3Non Whitei +…

Q: A random sample of 50 households was selected for a telephone survey. The key question asked was,…

A: From the provided information,n = 50x = 35Confidence level = 90%

Q: 2.6-4. Suppose an airport metal detector catches a person with metal 99% of the time. That is, it…

A: We have given thathere, probability of success, that is a detector fails to catch a person with…

Q: The following data are from a completely randomized design. Sample mean Sample variance Treatment…

A: Given alpha = 0.05Null hypothesis: Means of the three treatments are equal.After entering the data…

Q: Explain what is wrong with the following statements. Use complete sentences. a. If there is a 60%…

A: The probability shows how likely an event occurs.

Q: Determine the sample size required to estimate a population mean to within 8 units given that the…

A: Margin of error(E)=8standard deviation()=55confidence level=95%

Q: (4 points) Determine the sample size required to estimate a population mean to within 11 units given…

A: E=11,σ=50,CI=90%=0.90α=1−CI=1−0.90=0.10Note: According to bartelby question answer guidelines an…

Q: A random sample of the closing stock prices in dollars for a company in a recent year is listed…

A: 18.08,15.79,16.45,20.42,20.88,15.65,17.09,15.38,15.64,19.56,16.84,16.95,19.31,18.69,21.66,17.14

Q: You are hired as a consultant to assess a firm's ability to forecast. The firm has developed a point…

A: We know that,The forecasts for both the yen and pound are absolute and are in percentage form as…

Q: Multiplication Rule: A bag contains 8 white, 4 blue, 9 red, 7 yellow, and 4 green marbles. A marble…

A: There are 8 white, 4 blue, 9 red, 7 Yellow, and 4 green marbles in a bag.

Q: Please give solution in correct and step by step detailed format thanku Don't give solution in…

A: n=20p=0.35A random variable XBinomial(n=20 , p=0.35)P(X=x)=

Q: A computer software package was used to calculate some numerical summaries of a sample of data. The…

A: VariableNMeanSE MeanStDevVariancex3056.1622.396

Q: Consider the probability distribution shown below. 0 1 0.75 0.20 2 0.05 X P(x) Compute the expected…

A: Random variables are of 2 types, discrete and continuous. A discrete random variable can only take…

Q: Each member of a random sample of 15 business economists was asked to predict the rate of inflation…

A: Sample size, n = 15Population standard deviation,

Q: need help with part D

A: Sample sizes n1=594 ,n2=506Favorable cases x1=363 ,x2=325Significance level (α) = 0.01Now,p̂1 =…

Q: For a standard normal distribution, find: P(Z > c) = 0.8646 Find c.

A: Z has follows standard normal distribution with mean zero and standard deviation one.

Q: ans while 325 of the 506 randomly selected wildfires looked at the west were caused by humans. What…

A: Sample sizes n1=594 ,n2=506Favorable cases x1=363 ,x2=325NOTE: According to bartleby guidelines…

Q: Captain D's tuna is sold in cans that have a net weight of 8 ounces. The weights are normally…

A: n=36,μ=8.025,σ=0.125

Q: Use the TI-84 Plus calculator to find the z-scores that bound the middle 82% of the area under the…

A: The middle area = 0.84.The Z-scores are to be answered.

Q: According to a 2009 Reader's Digest article, people throw away about 8% of what they buy at the…

A: n=78, p=8%

Q: Find the critical values x and x for the given level of XU confidence and sample size. Use three…

A: We have to find the critical values for chi-square for the given sample sizes.

Q: Does it take less time for seeds to germinate if they are near rock music that is continuously…

A: The number of seeds were exposed to rock music, The number of seeds were exposed to classical music,…

Q: 1 The length of life (in days) of an alkaline battery has an exponential distribution with an…

A: X~Exp(1365)Mean=365 days

Q: A distribution of values is normal with a mean of 90 and a standard deviation of 3. Find the…

A:

Q: Do males have a significantly lower mean on the ACT test than females? n st. dev 50 mean Males…

A: t-test is used when population is from normal distribution and population standard deviation is…

Q: The length of time of calls made to a support helpline follows an exponential distribution with an…

A: X~Exp(λ=150=0.02)

Q: If the number of independent variables is 5 and the number of observations is 10, the degrees of…

A: Number of independent variable =5Number of observation=10We have to find the degree of freedom:

Q: According to a college survey, 89% of all students work full time. Find the mean for the number of…

A: It is given that the number of observations are independent with the probability of success p = 89%…

Q: Decide whether the random variable x is discrete or continuous. x represents the length of time it…

A: We know that discrete variables take a finite number of countable points whereas a continuous random…

Q: The EPA wants to test a randomly selected sample of ?n water specimens and estimate the mean daily…

A: E=22,σ=33,CI=80%=0.80α=1−CI=1−0.80=0.20

Q: What is the posterior mean? Report your answer to three decimal places.   What is the lower bound…

A: Given,we specify our prior belief on  using a Beta distribution with parameters (shape 1 and shape…

Q: For a population with a proportion equal to 0.37, calculate the standard error of the proportion for…

A: The Population proportion isp=0.37The sample size is 40,80,120

Q: Seventeen of the 200 digital video recorders (DVRs) in an inventory are known to be defective. What…

A: Seventeen of the 200 digital video recorders (DVs) in an inventory are known to be defective.…

Q: conditions in their local prison. Using the data collected, test the difference between the means.…

A: N1=50,N2=40,X1¯=6,X2¯=4.9,s1=1.2,s2=1.4,α=0.05

Q: The sampling distributions below come from samples with a population standard deviation of 28. Which…

A: n=49,σ=28

Q: High school seniors with strong academic records apply to the nation's most selective colleges in…

A: From the given information we haveTwo events A and B are said to be mutually exclusive if i.e., the…

Q: Determine whether the game is fair.

A: A dice game costs $2 to play. If an odd number is rolled, the player receives $3. If an even number…

Q: The chance that you win a game is 60%. How many times on average should an individual play this game…

A: We have given thatProbability (p) = 60% = 0.60Standard deviation ()  = 2.2

Q: If team B is the underdog in playing team C and has probability 1/4 of winning every game it plays…

A: The probability of team B winning the game is, P(B)=14The probability that team C wins every game it…