Question 3 a) A traffic survey was carried out to establish a vehicle count at an intersection. A student data collector recorded the numbers of cars waiting in queue each time the green light jumped on. These are his/her outcomes: 315323571288161855854725634284455433 49621 " range. 41 S . 5235357258242435646932126 5353763756 Calculate the mean, standard deviation, mode and inter-quartile " b) Use the data in question 3a) above and report the level of skewness and interpret your result. c) Estimate the extent of kurtosis in the above data and interpret your result

Q: (d) If less than three operations were successful, how would you feel about the performance of the…

A: Probability (p) = 0.90n = 5X ~ Binomial(n = 5, p = 0.90)and from part (c)P(X<3) = 0.009

Q: Determine the confidence level. Determine the confidence level for confidence interval shown in the…

A: It is given that α/2 = 0.10

Q: A Gallup survey of 2324 adults (at least 18 years old) in the U.S. found that 417 of them have…

A: The formula of the confidence interval is,

Q: Do men and women differ in the degree of empathy that they show to a stranger?  Below are data…

A: Men(x)Women(y)7758310471

Q: A manufacturing machine has a 10% defect rate. If 9 items are chosen at random, what is the…

A: It is given that P( success ), p = 10% = 0.10Sample size, n = 9

Q: D11 fx A 1 z-Test: Two Sample for Means 2 3 4 Mean 5 Known Variance 6 Observations 7 Hypothesized…

A: z-Test: Two Samples for MeansVariable 1Variable 2Mean94.6666794.93333Known…

Q: 1. If the slope is −1.64, the residual mean square is 3.6, the sum of squares for X is 2.5, and the…

A: The slope parameter: The residual mean square: The sum of squares for : Sample size: Hypothesized…

Q: In the diagram below, all circles represent products and the shaded circles represent defective…

A: We have given that total number of circles = 21Number of defective circles = 4Number of…

Q: During one shift, the express lane clerk recorded how many times customers violated the "10 items or…

A: Number of customers who violated 10 or less items rule is shown in a histogram.

Q: A fair coin is tossed 4 times. What is the probability of obtaining exactly 2 heads if it is known…

A: Let H denote Head and T denote tail in a coin tossFor a fair coin toss P(H)=P(T) =0.5Given that a…

Q: and all of the values of x are equally likely to occur. The graph of a uniform distribution is shown…

A: It is needed to explain about the uniform distribution.

Q: Let Y₁, Y2,..., Y is a random sample from a distribution from Normal distribution with finite mean μ…

A: It is given that the statement about to the normal distribution. Here, need to find out the correct…

Q: In a sporting​ event, the championship is won by the first team to win four games. The lengths of…

A: Number of gamesFrequency Relative Frequency4220.1965270.2416270.2417360.321

Q: A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of 7.0…

A: Given information:The hypothesized value of the population mean is 7Claim: the mean amount of coffee…

Q: . Scores on an exam are normally distributed with a mean of 155 and a standard deviation of 15; find…

A: The mean is 155 and the standard deviation is 15.

Q: A major orange juice producer buys their supply of oranges from a large orange grove in Southern…

A: The question is about normal distribution.Given :Population mean amount orange juice  (  ) = 4.70…

Q: a. State a conclusion about the null hypothesis. (Reject Ho or fail to reject Ho.) Choose the…

A: Original claim: The mean pulse rate is 71 bpmLevel of signicance=α=0.10 , P value=0.0625

Q: mean 2600 and standard deviation 50. (a) Is total energy needed during pregnancy a qualitative…

A: It is given that Mean = 2600Std. deviation = 50Note: According to Bartleby expert guidelines, we…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: We have given the following data Over the age of 55Sample size (n1) = 285Number of people dream in…

Q: In statistics question 1 of attached image, is the ANOVA table values correct, and does it show…

A: 1) Given information:n= 18 observation k= 4 independent variables

Q: Construct a  90%  confidence interval for the mean number of hours it takes for a student to meet…

A: It is given that Sample mean = 80.2Sample std. deviation = 51.5Sample size = 42Confidence level =…

Q: ber of customers who enter a supermarket each hour is normally distributed with a mean of 640 and a…

A: Suppose that the number of customers who enter a supermarket each hour is normally distributed with…

Q: How many five-digit even numbers are possible if the leftmost digit cannot be zero? (Don't Hand…

A: The five-digit even numbers has to be generated and the leftmost digit cannot be zero.

Q: How many different four-letter secret codes can be formed if the first letter must be an S or a T?…

A: We have to form the different secret codes of four letters. The first letter must be an S or T.

Q: According to a government agency, 18.8% of the population of a certain country smoked in 2016. In…

A:

Q: Draw the distribution of points in the x, y coordinate system 2. Make an equation of the line 3.…

A: Given information: xy13325675108127131016918122010

Q: The table shows the earnings (in thousands of dollars) of a random sample of 11 people with…

A: For people with bachelor's degrees,Sample size, For people with associate's degrees, Sample size,…

Q: In a small coffee shop, customers arrive at an average rate of 5 per hour, following a Poisson…

A: X~Pois(rate=5)

Q: Claim: Fewer than 9.6% of homes have only a landline telephone and no wireless phone. Sample data: A…

A: Let p is the parameters that represent the proportion of homes that have only a landline telephone…

Q: Let z be a standard normal random variable with mean ? = 0 and standard deviation ? = 1. Use Table 3…

A: The probability shows how likely an event occurs.

Q: 9.6 In a certain population the random variable Y has variance equal to 490. Two independent random…

A: Let's denote the first sample mean as and the second sample mean as , and the samples are…

Q: Consider the following data: Monthly Profit of an Auto Repair Shop Mar-14 Apr-14 May-14 Jun-14…

A:

Q: Dr. Sloane is doing a study to test the association between alcohol consumption and the occurrence…

A: All the odds ratios (except for 0 drinks) are different from 1 and all the p-values are less than…

Q: 34% of U.S. adults say they are more likely to make purchases during a sales tax holiday. You…

A: Probability of U.S adults say they are mlre likely to make purchases during a sales tax…

Q: The table below shows some data on which countries are major oil produc- ers and which countries…

A: Given 2x2 table is:Civil warNo civil warTotalOil producer71219Non-oil producer5594149

Q: mean equal to 4.00. Assume that a simple random sample has been selected. Identify the null and…

A: n=99​, x=3.84​, s=0.55. Use a 0.05

Q: Select all statements that are TRUE. As the size of a sample increases, the mean of the distribution…

A: The sample size is the no. of participants or observations included in a study. The number is…

Q: Assume a Poisson distribution. Find the following probabilities. a. Let λ = 6.0, find P(X > 3). b.…

A: As per our guidelines, we can solve the first three sub parts of question and rest can be…

Q: A spinning wheel has 10 different dollar amounts on it ($1, $2, etc. up through $10). There is a .10…

A: Number of different dollar amounts on the spinning wheel = 10probability of landing on any one of…

Q: Data from a representative sample were used to estimate that 33% of all computer users in a recent…

A: P=0.33E=0.04

Q: Once their customer, Apple, receives the boards, they will also randomly test 7% of the boards and…

A: Calculate the probability that a randomly selected board is defective:If more than 15% of the tested…

Q: Archeologists have studied sizes of Egyptian skulls in an attempt to determine whether breeding…

A: X= 128.4,138.2 ,125.8 ,131.7 ,142.7,134.7,138.8 ,128.7n=8

Q: I had experts in the probability and statistics section of bartleby try to help me with parts (a),…

A: YearConcentration20191.4920223.0520202.5320212.3720193.4920192.6220232.820233.6920203.0420221.622021…

Q: In 2018, Pennsylvania was one of 11 states that did not collect race data during traffic stops.…

A: n=8 no of complaints:275 ,67 , 35 , 1, 21 ,35 ,4,15To determine 90% CI we have

Q: The taste test for PTC (phenylthiocarbamide) is a favorite exercise for every human genetics class.…

A: The question is about discrete probability distribution.Given :Proportion of tasters ( p ) =…

Q: Why would the null hypothesis not be the mean lifespan of sexually inactive males (62.5)?

A: Sample mean=X¯=62.5, n=sample size=24, population mean=μ=38.9

Q: Let x be a Poisson random variable with mean = 6. Find the probabilities for x using the Poisson…

A: The variable x be a Poisson random variable with mean .

Q: 3. Consider a simple linear regression model (Y: Consumption, X: Disposable Income) Yị = $1 + 2X+ei…

A: The given model is as follows:The given values are as follows:n =10,

Q: Determine what type of observational study is described. Explain. Vitamin D is important for the…

A: Given:250 women diagnosed with osteoporosis.An equal number of women without osteoporosis ( 250…

Q: Forty-seven fast-food restaurant hourly employees were surveyed to see how many hours they worked…

A: n=4787 % confidence interval