Statistics question and answers for October 27, 2023
- Q 1 point The average age of residents in a large residential retirement community is 69 years with standard deviation 9 years A simple random sample of 100 residents is to...
- Q 35 1 point For this density curve the mean is 0 5 0 4 0 3 0 2 0 1 0 0 0000 0 equal to the median less than...
- Q 1 point The exam scores out of 100 points for all students taking an introductory statistics course are used to construct the following boxplot Exam Score 00 0 100 80...
- Q 1 point Suppose that we have two pyramid shaped 4 sided dice with the faces numbered 1 through 4 Suppose that the two dice are rolled and the numbers showing...
- Q The graph below shows a scatterplot of midterm scores plotted against homework scores The graph contains several points that correspond to unusually low homework scores and one of those scores...
- Q 1 point If a hypothesis test is significant at level a 0 05 what is true of the P value P value 0 01 P value 0 05 P value...
- Q 1 A company wants to see if their medication reduces the amount of inflammation in the body They go about this by splitting their randomly sampled group in two Group...
- Q 1 point Assume that you are considering buying a car There is a probability of 0 4 that you will purchase a new vehicle and there is a probability of...
- Q A randomly sampled group of patients at a major U S regional hospital became part of a nutrition study on dietary habits Part of the study consisted of a 50...
- Q 1 point A special diet is intended to reduce systolic blood pressure among patients diagnosed with stage 2 hypertension If the diet is effective the target is to have the...
- Q 2 A random sample of Starbucks employees from across the nation is asked how may cups of coffee they served on a given day The responses are as follows 24...
- Q 1 point As part of a database of new births at a hospital some of the variables recorded are the age of the mother the marital status of the mother...
- Q Sickle cell disease is a painful disorder of the red blood cells that in the United States affects mostly African Americans To investigate whether the drug hydroxyurea can reduce the...
- Q A 95 confidence is given by 15 20 The interval is based on a sample of size n 25 If we want to reduce the margin of error by half...
- Q You randomly select 500 students and observe that 135 of them smoke What is your estimate of the probability that a randomly selected student smokes 1 2 000 0 27...
- Q 1 point A description of different houses for sale includes the square footage of the house whether or not the house has a finished basement and the monthly electric bill...
- Q 1 point You measure the lifetime of a random sample of 64 tires of a certain brand The sample mean is x 50 months Suppose that the lifetimes for tires...
- Q 7 1 point What is the area under the standard Normal curve corresponding to z 0 32 0 7734 0 5562 0 6255 0 9599
- Q 1 point A statistician wishes to test a hypothesis that students score at least 75 on the final exam in an introductory statistics course The statistician decides to randomly select...
- Q In a large population of college educated adults the mean IQ is 112 with standard deviation 25 Suppose 36 adults from this population are randomly selected for a market research...
- Q I choose a card at random from a well shuffled deck of 52 cards The probability that the card chosen is either a club or a jack is 14 52...
- Q 1 point Running times for a 400 meter race are Normally distributed for students at a certain school with a mean of 93 seconds and a standard deviation of 16...
- Q 1 point Veterinarians often use nonsteroidal anti inflammatory drugs NSAIDs to treat lameness in horses A group of veterinary researchers wanted to find out how widespread the practice is in...
- Q AW NA INWA 2 3 4 4 ermine the period 8 12 16 20 24 28 Enter
- Q 8 1 point A student wonders whether people with similar heights tend to date each other She measures herself her dormitory roommate and the women in the adjoining rooms then...
- Q A large university is divided into six colleges with most students graduating from one of four of these colleges The following bar chart gives the distribution of the percents graduating...
- Q 1 point Archaeologists often find only parts of ancient human remains For example they may find a small finger bone called the metacarpal bone Because of this researchers often ask...
- Q A violin student records the number of hours she spends practicing during each of nine consecutive weeks 6 2 5 0 4 3 7 4 5 8 7 2 8...
- Q A frequent flyer was interested in the relationship between dollars spent on flying and the distance flown She randomly sampled 20 frequent flyers of a certain airline She collected the...
- Q 1 point A researcher studying the effect of price cuts on consumers expectations makes up two different histories of the store price of a hypothetical brand of laundry detergent for...
- Q 1 point The regression equation below relates the scores students in an advanced statistics course received for homework completed and for the subsequent midterm exam Homework scores are based on...
- Q A simple random sample of 25 recent birth records was selected from a local hospital In the sample the average birth weight was 119 6 ounces Suppose the distribution for...
- Q A marketing consultant is hired by a major restaurant chain that wants to investigate the preferences and spending patterns of lunch customers The CEO of the chain hypothesized that the...
- Q In the scatter plot shown below what type of correlation exists between years worked and salary See SCATTER PLOT from the final exam consolidated file O a negative O b...
- Q Acme toy company prints baseball cards The company claims that 30 of the cards are rookies 60 veterans but not All Stars and 10 are veteran All Stars Suppose a...
- Q April May June b Whi Use a 0 05 significance level to test whether homicides in this city are equally likely for each of the 12 months a Which is...
- Q the wait times in their drive thru for all customers is 3 23 minutes You work for a competitor and you want to test that claim To do so you...
- Q The table shows results from polygraph lie detector experiments conducted by researchers on 58 subjects In each case it was known if the subjected lied or did not lie Actually...
- Q for a competitor and you want to test that claim To do so you select a random sample of 40 of the chain s drive thru customers and record the...
- Q The average weight in pounds of boys who are three years old or younger can be approximated by the function f x 7 6 6 36in x where x represents...
- Q prefer printed textbooks to electronic textbooks You want to test this claim by surveying a random sample of 45 college students Follow the steps below to construct a 90 confidence...
- Q 3 The plot below shows a frequency distribution in gray bars and a normal probability distribution as a red line Frequency Enter here 40 35 30 25 20 15 10...
- Q On a television show eight contestants try to lose the highest percentage of weight in order to win a cash prize As part of the show the contestants are timed...
- Q 1 The plot below shows a frequency distribution in gray bars and a normal probability distribution as a red line Frequency Enter here 10 8 8 2 0 40 60...
- Q Probability Distribution Use the frequency distributions below labeled A D to answer the questions that follow Frequency Frequency 200 A 150 8 8 50 292 888 20 160 140 C...
- Q What conditions are necessary in order to use the dependent samples t test for the mean of the differences for a population of paired data Choose the correct answer below...
- Q 17 points Periodically the county Water Department tests the drinking water of homeowners for contaminants such as lead and co levels in water specimens collected in 1998 for a sample...
- Q weights for all Boer goats is 2 81 kg A veterinary service has hired you to test that claim To do so you select a random sample of 35 Boer...
- Q Find the mean median mode range standard deviation and variance of the data set below 0 55 60 65 65 70 70 70 75 80 85 90 95 100
- Q Please answer the following essay question Consider the data set given below Which of the two options do you think is best for representing the data Explain your reasoning Pay...
- Q decision using the standardized test statistic and using the P value Assume the sample sizes are equal Click the icon to view the technology display Choose the correct answer below...
- Q What conditions are necessary in order to use the z test to test the difference between two population means Select all the necessary conditions below A The samples must be...
- Q Create a data set of 10 data points where the mean and the mode are the same and show that your data set works
- Q What is the relationship between variance and standard deviation Can either be negative Explain
- Q Choose the correct answer below OA They are equivalent through algebraic manipulation OB The values of and are equivalent in every population Therefore these hypotheses are equivaler OC They are...
- Q Determine whether the statement is true and justify your response The mean is th measure of central tendency most likely to be affected by outliers
- Q You roll a number cube numbered one to six 12 times P 5 What type of probability is illustrated and why OA experimental the result is based on the number...
- Q Find the P value for the indicated hypothesis test with the given standardized test statistic z Decide whether to reject Ho for the given level of significance Right tailed test...
- Q L a 0 27 Ob 1 c 2 d 3 requency of the value 3 e I don t know the answer 3 What is the relative frequency of the...
- Q The following set of numbers represents a sample of the data 2 3 3 3 4 4 5 5 6 6 7 Use this sample to answer the following questions...
- Q The website of the large coporation CorpPlus claims that 93 of the population of all employees say the corporation is a great place to work You work for a competitor...
- Q 1 How does the Condorcet method differ from the Borda count 1 point O The Condorcet method does not assign points for all of the values The Condorcet method requires...
- Q advertisement for this lottery claims that 42 of the population of all the scratchers are winning ones You want to research this claim by selecting a random sample of 48...
- Q How does a preference ballot give a voter more choices in an election 1 point O Every candidate on a preference ballot is ranked by the voter instead of just...
- Q Which best expresses a potential difficulty with preference ballots 1 point Because preference ballots are so rare it is easy to forge extra copies of them and vote illegally Preference...
- Q 10 A travel agent is booking a trip to England Scotland Ireland and France for a group of senior citizens and created the shown preference schedule from data gathered from...
- Q 9 A travel agent is booking a trip to England Scotland Ireland and France for a group of senior citizens The agent sent surveys to the group asking which countries...
- Q Which of the following best describes a problem that occurs when the plurality method is used 1 point The plurality method only allows comparisons between pairs of candidates and can...
- Q 5 Suppose this preference schedule gives the results of an election between three candidates Amy A Beth B and Candice C Based on the plurality method who is the winner...
- Q 6 22 Standard Normal Use a table or technology to answer each question Include an appropriately labeled sketch of the Normal curve for each part Shade the appropriate region a...
- Q 6 5 Loaded Die Example 2 A magician has shaved an edge off one side of a six sided die and as a result the die is no longer fair...
- Q 6 1 6 4 Directions Determine whether each of the following variables would best be modeled as continuous or discrete 6 1 Example 1 a Number of cars passing a...
- Q Solve the following problems involving complex numbers Show all work Put your final answer on the line provided 6 7 2 6i 2 6i 10 2i
- Q Create a table and graph the equation y Is it a function Explain why or why not
- Q as needed Determine the domain and range using the indicated notation and whether or not the equation is a function 1 Set notation f x 3x 51 2 Interval notation...
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