Statistics question and answers for July 02, 2023
- Q onsider the geometric and traffic characteristics shown below Approach Width Peakhour Approach Volumes Left Turn Through Movement Right Turn Conflicting Pedestrian Volumes PHF ssume the following saturation flows Through lanes...
- Q Question 17 The school paper published the results of a survey among grade eight students with regards to their favorite subject Number of Students 120 100 80 60 40 20...
- Q The formula for the standard deviation of a sample is S X X n 1 1 Select the true statement for the following data set that has a mean of...
- Q Which of the following statements about a positively skewed distribution is true O The distribution of the data tails to the right of the median O The distribution of the...
- Q In which of these cases should mode be used O When the data is represented using interval scale O When the data is represented using ratio scale O When the...
- Q Dave drives to work While driving the car over nine days he observes his daily average speed and lists it in the table below 1 2 3 4 5 6...
- Q honda is wondering if there is an association between the number of hours she studies per week and the number of semester credits she is enrolled in The information is...
- Q For a left tailed test the critical value of z so that a hypothesis test would reject the null hypothesis at 10 significance level would be Answer choices are rounded...
- Q Which statement about correlation is FALSE O Correlation is the degree to which the two variables of a data set resemble each other Correlation is used to define the variables...
- Q Sam counts how many people came to the local political meeting He counts 72 people but forgot about the 4 people sitting behind him The percent error in his calculation...
- Q Rachel recorded the number of calls she made at work during the week Day Monday Tuesday Wednesday Thursday x 0 E E O 3 27 Calls O 1 52 18...
- Q A fast food restaurant gave a Customer Satisfaction Survey in which 1500 customers rated how satisfied they were with service The results are shown below as a table Extremely Satisfied...
- Q stion 2 he value of to such that the following
- Q Find the value of to such that the following statement is true P to t to 0 99 where df 9 O 2 262 2 282 O 1 761 1...
- Q Brad reads a scatterplot that displays the relationship between the number of cars owned per household and the average number of citizens who have health insurance in neighborhoods across the...
- Q This scatterplot shows the performance of a thermocouple using the variables temperature difference and voltage Voltage in mV LO 5 4 5 4 3 5 3 2 5 2 1...
- Q his scatterplot shows the maintenance expense for a truck based on its years of service Maintenance Expense in dollars 600 500 400 300 200 Maintenance Expense Vs Age of Truck...
- Q Which of the following statements is TRUE O A high correlation is insufficient to establish causation on its own O If the two variables of a scatterplot are strongly related...
- Q The scores of the quizzes of five students in both English and Science are Student 1 O 0 42 Student 2 O 0 05 Student 3 O 0 23 Student...
- Q A scientist is comparing parts of the body The tibia length is plotted against the body length as shown below Tibia Length Compared to Body Length 72 70 0000 68...
- Q Which statement about correlation is FALSE O A correlation of 1 or 1 corresponds to a perfectly linear relationship O Correlation is measured by r the correlation coefficient which has...
- Q The scatterplot below charts the performance of an electric motor Speed of Rotation in RPMs O 3000 O 2800 O 2700 2600 2500 2400 2300 2200 2100 2000 Performance of...
- Q For the plot below the value of r is 0 7783 Cost in dollars 700 525 350 175 O O Cost of Airplane Ticket vs Miles Flown 750 Which of...
- Q Shawna finds a study of American women that has an equation to predict weight in pounds from height in inches y 260 6 6x Shawna s mom s height is...
- Q Two cards are selected from a standard deck of 52 playing cards The first card is not replaced before the second card is selected Find the probability of selecting a...
- Q Question Completion Status 1 2 3 40 5 QUESTION 19 George Wallace is inter problems they have in He recruits a sample a Money 745 294 858 Problems 103 49...
- Q uestion 1 of 8 Step 1 of 2 onsider the value of t such that 0 01 of the area under the curve is to the right of t ep...
- Q You randomly select an integer from 0 to 7 inclusively and then randomly select an integer from 0 to 4 inclusively What is the probability of selecting a 3 both...
- Q Question 10 The foreign ownership of the U S government securities amounts to O 60 O 75 O 40 Points 2 O 10
- Q A NASDAQ C FTSE International O A and C After the terrorist attack in New York on September 11 2001 which of the following stock exchanges experienced a downturn O...
- Q QUESTION 15 Given X 100 94 77 99 71 83 and Y 45 36 20 44 17 24 24 Calculate The correlation coeffici Remember to report yo
- Q Lab 3 Problem Set Name Temp X 57 77 Ice Cream Sales 215 401
- Q on Completion Status 3 JESTION 9
- Q files Tab Window Help New Ta XV CUNY X ke launch jsp course assessment id US Bb Take To 50 61 70 80 9 100 11
- Q ESTION 1 earcher performing an obs ber of hours they spend pe
- Q QUESTION 12 Given X 100 86 78 83 70 81 87 97
- Q a must be positive a must be negative QUESTION 8 Which Pearson correlation coefficient shows 0 80 O 0 00 O 0 75 O 0 20 0 03 QUESTION 9...
- Q QUESTION 10 If a relationship is linear the relation can be most accurately re all the points fall on a curved line the relationship is best represented b all the...
- Q Which plan has the least amount of risk
- Q In the long run which plan has the higher payout
- Q In a recent poll 390 people were asked if they liked dogs and 80 said they did Find the margin of error of this poll at the 95 confidence level...
- Q Fall 2 1 A plastic bottle company is measuring the variation of the cap size that their newest machine produces They gather the data from 1500 bottle caps and calculate...
- Q If n 560 and p p hat 0 4 find the margin of error at a 90 confidence level Round to 4 places
- Q 6 18 Is college worth it Part II Exercise 6 16 presents the results of a poll where 48 of 331 Americans who decide to not go to college do...
- Q e Jophia U Teri 28 pts 4 each Arrival times in minutes of donor organs in the population of US operating rooms can be modeled as a normal random variable...
- Q Out of 600 people sampled 372 had kids Assuming the conditions are met construct a 99 confidence interval for the true population proportion of people with kids Give your answers...
- Q Find the probability P 1 66 Z 1 66 Multiple Choice 0 050 0 904 0 929 J
- Q For the next question use the following table of critical values of Z Confidence Level C 90 1 645 Critical Z Z b 4 What is the margin of error...
- Q 4 24 pts 4 each The hourly wage for the national population of health aides denoted by X is known be normally distributed and to have a mean of 30...
- Q 3 8 pts A medical screening test to detect a disease has the results summarized in the table below in millions of people Test Pos 12 57 69 a 4...
- Q 2 For problem 3 10 pts 5 each consider the table below of selected students from MA 151 last year You do NOT need to convert this table to percents...
- Q A table represents the number of students who passed or failed an aptitude test at two different campuses Passed Failed O 39 students O 50 5 students East Campus O48...
- Q Which of the following assumptions for a two way ANOVA is FALSE O The groups must have the same sample size O The variances of the populations must be equal...
- Q Emile has calculated a one tailed z statistic of 1 97 and wants to see if it is significant at the 5 significance level What is the critical value for...
- Q Adam tabulated the values for the average speed on each day of his road trip as 60 5 63 2 54 7 51 6 72 3 70 7 67 2...
- Q Carl recorded the number of customers who visited his new store during the week Day Monday Tuesday Wednesday Thursday x O 0 40 O 2 33 He expected to have...
- Q What do the symbols x and s represent O Sample statistics O Population parameters O Defined variables O Variables of interest
- Q Which of the following is an example of a parameter O All of the members of the community watch group gave their availability to volunteer over the summer Half of...
- Q For the data plotted in the scatterplot the value was calculated to be 0 9846 Yearly income in thousand dollars 84 84 84 O 80 75 70 65 60 55...
- Q Shawna finds a study of American women that had an equation to predict weight in pounds from height in inches y 260 6 6x Shawna s height was 64 inches...
- Q The table below shows the grade and reading level for 5 students Student 1 O 0 71 Student 2 O 0 85 Student 3 O 1 00 Student 4 Student...
- Q Which of the following statements is TRUE O High correlation always implies causation O High correlation does not always imply causation O Only a correlation of 1 implies causation O...
- Q The scatterplot below shows the relationship between the grams of fat and total calories in different food items Grams of Fat vs Total Calories Total Calories O 549 54 O...
- Q For a math assignment Michelle rolls a set of three standard dice at the same time and notes the results of each trial What is the total number of outcomes...
- Q Tracie spins the four colored spinner shown below She records the total number of times the spinner lands on the color red and constructs a graph to visualize her results...
- Q The midterm exam scores obtained by boys and girls in a class are listed in the table below Midterm Scores Boys 9 78 6689 44789 0012 355567 112 36889 12...
- Q Which of the following statements about a negatively skewed distribution is true O The distribution of the data features two modes O The mean and median have the same value...
- Q Select the statement that is FALSE O The interquartile range is always equal to or smaller than the range O The range is never greater than the greatest value of...
- Q In which of these cases should the median be used O When the data has small variance O When data has no outliers O When the data has extreme values...
- Q Frequency O 16 68 15 18 10 5 O 1 5 8 00 6 10 15 11 15 7 16 20 The relative cumulative frequency of students who earned a...
- Q 40 O 40 The first quartile Q1 value from the above box plot is O 54 O 47 47 O 65 54 65
- Q Which of the following statements about a normal distribution is true The normal distribution is an example of a bimodal distribution OA large portion of the data is skewed to...
- Q 1 Lumber companies dry freshly cut boards in kilns 1 Lumber companies dry freshly cut boards in kilns before selling them As a result of the drying process a certain...
- Q Question 9 For a class reading competition the students were asked to read a book Mike Jack and Rayon discussed the numbers of pages they read on the first day...
- Q 1 2 5 points Thirty five engineering students are randomly selected in a study to determine the number of hours outside of the class that students study in a week...
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