Statistics question and answers for January 12, 2024
- Q dealer gathered data concerning the age and the type of vehicle that was purchased from a random sample of the people that bought vehicles from them in the past year...
- Q Suppose you are the president of the student government You wish to conduct a survey to determine the student body s opinion regarding student services The administration provides you with...
- Q 15 In the diagram shown all three triangles are similar to each other 2 25 E 60 Part A What is the length of BD Part B What is the...
- Q What is an observational study What is a designed experiment Which allows the researcher to claim causation between an explanatory variable and a response variable What is an observational study...
- Q The data on the right relate to characteristics of high definition televisions A through E Identify the individuals variables and data corresponding to the variables Determine whether each variable is...
- Q A news service conducted a survey of 1040 adults ages 18 years or older in a certain country August 31 September 2 2015 The respondents were asked Of every tax...
- Q A student organization uses the proceeds from a soft drink vending machine to finance its activities The price per can was 0 75 for a long time and the mean...
- Q When the tissue around teeth becomes inflamed the tissue bleeds more easily and this is an indication of gum disease The severity of bleeding can be measured by a bleeding...
- Q In a study of memory recall 8 students from a large psychology class were selected at random and given 10 minutes to memorize a list of 20 nonsense words Each...
- Q Medical research has shown that repeated wrist extension beyond 20 degrees increases the risk of wrist and hand injuries Each of 24 students at a university used a proposed new...
- Q The figure below is similar to one that appeared in the report Digital Media Trends 15th Edition Courting the Consumer in a World of Choice The graph summarizes responses by...
- Q The Economist collects data each year on the price of a Big Mac in various countries around the world A sample of McDonald s restaurants in Europe in July 2021...
- Q Suppose that a random sample of size 64 is to be selected from a population with mean 50 and standard deviation 7 USE SALT a What are the mean and...
- Q Many people now turn to the Internet to get information on health related topics A research article used Flesch reading ease scores a measure of reading difficulty based on factors...
- Q In recent years concerns have been expressed about adverse health effects from amalgam dental restorations which include mercury The table below shows results from a study in which some patients...
- Q Find the median for the given sample data In ten trips to Las Vegas a person had the following net gains 2052 3538 4981 6887 3208 2052 6986 7492 6768...
- Q Use the given data to find the equation of the regression line Round the final values to three significant digits if necessary x 6 8 20 28 36 y 2...
- Q Given the linear correlation coefficient r and the sample size n determine the critical values of r and use your finding to state whether or not the given r represents...
- Q Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p A survey of 300 union members in New York State reveals...
- Q Find the indicated probability 100 employees of a company are asked how they get to work and whether they work full time or part time the results are shown below...
- Q Construct the indicated confidence interval for the difference between population proportions p P2 Assume that the samples are independent and that they have been randomly selected X 36 n 80...
- Q Solve the problem A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8 4...
- Q Solve the problem The weights of certain machine components are normally distributed with a mean of 8 81 g and a standard deviation of 0 06 g Find the two...
- Q Find the indicated percentile decile or quartile The weights in pounds of 30 newborn babies are listed below Find P16 5 5 5 7 5 8 5 9 6 1...
- Q Use the P value method to test the given hypothesis A nationwide study of American homeowners revealed that 64 have one or more lawn mowers A lawn equipment manufacturer located...
- Q Compute the test statistic used to test the null hypothesis The National Transportation Association reports that more accidents are caused by cell phones than by drunken drivers The cell phone...
- Q Use the traditional method to test the given hypothesis Assume that the population is normally distributed and that the sample has been randomly selected The standard deviation of math test...
- Q Find the percentile for the data point Data set 16 24 56 32 16 40 72 72 88 24 24 72 48 8 72 data point 56 O 60 O...
- Q Find the indicated probability An airline estimates that 90 of people booked on their flights actually show up If the airline books 78 people on a flight for which the...
- Q Test the given claim by using the p value method of testing hypotheses Assume that the sample is a simple random sample selected from a normally distributed population Include the...
- Q Find the necessary sample size The weekly earnings of students in one age group are normally distributed with a standard deviation of 60 dollars A researcher wishes to estimate the...
- Q Use the empirical rule to solve the problem The amount of Jen s monthly phone bill is normally distributed with a mean of 75 and a standard deviation of 9...
- Q Find the mean of the given probability distribution In a certain town 70 of adults have a college degree The accompanying table describes the probability distribution for the number of...
- Q Use the given degree of confidence and sample data to construct a confidence interval for the population mean 39 packages are randomly selected from packages received by a parcel service...
- Q Use the data to create a stemplot The weights of 22 members of the varsity football team are listed below 144 152 142 151 160 152 131 164 141 153...
- Q Find the indicated probability The table below describes the smoking habits of a group of asthma sufferers Smoking Habits of Asthma Sufferers Occasional Smoker 37 34 71 Men Women Total...
- Q Find the indicated probability A bag contains 6 red marbles 3 blue marbles and 7 green marbles If a marble is randomly selected from the bag what is the probability...
- Q Given the following data from a sample of 150 voters use the Chi Square Test to test for the dependence between political affiliation and the preferred candidate for mayor between...
- Q Green Blue 39 65 Jake wants to know if the spinner from his game is fair Given the results of 200 spins use the Chi Square Test X 7 88...
- Q Suppose 10 of students are veterans and 136 students are involved in sports How unusual would it be to have no more than 12 veterans involved in sports 12 veterans...
- Q The Real Estate Group NY reports that the mean monthly rent for a one bedroom apartment without a doorman in Manhattan is 2514 Assume the standard deviation is 498 A...
- Q The useful life of a bicycle bought at Basement mart fits a log normal distribution with a mean of 20 months and a standard deviation of 12 24 months Suppose...
- Q Engineers must consider the breadths of human heads when designing helmets The company researchers have determined that the population of potential clientele have head breadths that are normally distributed with...
- Q Delivery times for shipments from a central warehouse are exponentially distributed with a mean of 2 46 days note that times are measured continuously not just in number of days...
- Q The administrator at a local hospital states that on weekends the average wait time for emergency room visits is 10 minutes Based on discussions on the length of wait time...
- Q According to a major credit card company the mean outstanding credit card debt of college undergraduates was 2 210 in 2007 with a standard deviation of 28 What test statistic...
- Q According to a study the proportion of individuals in which cover their mouths when sneezing is 0 805 From a survey of 140 adults 132 cover their mouths when sneezing...
- Q According to a survey of 1 190 adult college students the mean number of alcoholic beverages consumed per week is 10 with a standard deviation of 7 beverages What test...
- Q If a claim is in the null hypothesis and we reject the null hypothesis then the conclusion would be there is not sufficient sample evidence to support the original claim...
- Q There is a functional relationship between the price of a small tablet p and weekly demand s Price p Weekly Demand s 1 000s 209 203 196 188 183 174...
- Q Item D ading in the visual display of data below Misleading pie chart Item A Item B Item C 42 5 Regular pie chart 11 42 item A item 8...
- Q A professor had students keep track of their social interactions for a week The number of social interactions over the week is shown in the following grouped frequency distribution How...
- Q A recent survey revealed that 92 of computer owners in a certain city have access to the Internet Describe the population this statement is referring to all computer owners in...
- Q For the set of points above determine whether an exponential function a linear function or a quadratic function is the best choice for modeling the data quadratic function exponential function...
- Q A fair coin is tossed two times in succession The set of equally likely outcomes is HH HT TH TT Find the probability of getting the same outcome on each...
- Q of traffic accid nts at intersections with raised medians with rates at intersections with two way left turn lanes They found that out of 4656 accidents at intersections with raised...
- Q A recent study examined the effects of carbon monoxide exposure on a group of construction workers The following table presents the numbers of workers who reported various symptoms along with...
- Q Prior to a new drive through system the mean wait time at a certain fast food restaurant was 96 seconds Use the data in the table below to decide whether...
- Q What is the relationship between the attendance at a major league ball game and the total number of runs scored Attendance figures in thousands and the runs scored for 9...
- Q Match the terms to the correct symbols n gives the Population Mean Sample Mean Population Size Sample Size Population Standard Deviation Sample Standard Deviation gives the Population Mean Sample Mean...
- Q What is the relationship between the attendance at a major league ball game and the total number of runs scored Attendance figures in thousands and the runs scored for 9...
- Q Recently we investigated a scatterplot on Gapminder org The table below shows the Income per capita in thousands of dollars per year and Life Expectancy in years some of the...
- Q Suppose the manufacturer states that a bag of candies should have the following distribution of colors 25 Red 9 Green 36 Yellow and 30 Brown You open a bag that...
- Q In a sample of 380 adults 242 dressed up for Halloween this year even though they had to socially distance Construct a 99 confidence interval for the true population proportion...
- Q At an unconventional casino you bet on the roll of an 18 sided die If you roll a 7 you win 2 If you roll a 1 or 18 you...
- Q Al wants to study the customers who eat at his restaurant He randomly selects 39 customers to participate in the study The proportion of customers in the survey who said...
- Q Suppose the manufacturer states that a bag of candies should have the following distribution of colors 25 Red 9 Green 36 Yellow and 30 Brown You open a bag that...
- Q Match each scatterplot shown below with the best desciption of its correlation O O B 200 9 Select an answer Select an answer Select an answer
- Q Stronghold Corporation uses two materials P and Q to manufacture a product The following standards are provided Standard unit price 2 5 Materials P Q Yield Standard Mix 55 units...
- Q 1 Which system of inequalities is graphed below A B D y x 2 y 2x 1 Jy x 2 y 2x 1 Syzx 2 y 2x 1 y x...
- Q Solve the given system of linear equations using the Elimination Method 4x 5y 19 x 5y I16 Be sure to type your solution as an ordered pair Do NOT use...
- Q A manager is comparing the cost of buying baseball caps from two different companies Company X charges a 50 fee plus 7 per baseball cap Company Y charges a 30...
- Q A total of 330 children and adults attended a school play There were 21 times as many children in attendance as there were adults How many children and adults attended...
- Q For the holiday season Brookfield Zoo will be setting up for Holiday Magic its annual lights festival Bob s job is to set up lights on various bushes and trees...
- Q 2 1 2 1 2 3 4 3 2 1 0 1 2 1 2 3 10 0 O 1 2 2 3 3 4 4 4 5 5 6...
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