MATH 225N Week 8 Final Exam Week 5 – 8
- Question: Find the mode of the following runs … in a baseball game throughout the season 0, 4, 3, 2, 4, 1,2,3,4,0,1, 4,2,4,0
- Question: Answer choices below represent different hypothesis test which of the choices are right … test right … test select all correct answers
- Question: Which of the data sets … by the following histograms has the smaller standard deviation select the correct answer below?
- Question: Alice sells boxes of Candy at the baseball game and wants to know the mean number of boxes she sells the numbers for the game so for all … below 16 14 14 21 15 find the main box is sold provide your answer below?
- Question: The length of text messages are normally … with an unknown population mean a random sample of text messages is taken and results in a 95% confidence interval of 2347 characters. what is the correct interpretation of 95% confidence interval select the correct answer below?
- Question: What is the P value of a right … one main hypothesis test with the test statistics of z= 1.74 (do not round your answer compute your answer using a value from the table below)
- Question: In psychological study … at testing a drug that reduce anxiety the researcher group the participants into two groups and gave the anxiety reduction pill to one group and an inert pill to another group which group … the place…. :
- Question: Is the statement below true or false? independent is the property of two events in which the knowledge that one of the events … does not affect the charge the other occurs?
- Question: Study with that there is a correlation between playing a musical instrument and grades at teacher randomly … 20 students who play an instrument and 20 students who do not play an instrument and … their grades is the study of observational or experimental if it is an experiment what is the … factor
- Question: Kyle collecting data on the types of restaurant in his area what type of data is this select the correct answer below
- Question: Suppose germination periods in days for grass seeds are normally … and have a noun population standard deviation of 5 days and an unknown population mean a random sample of 19 types of grass seed is taken and give the sample mean of 36 days. find the confidence interval for the population mean with the 99% confidence level
- Question: Given the plot of Normal Distribution A and B below which of the following statement is true select all correct answers
- Question: An economist claims that the proportion of people who plan to purchase a fully electric vehicle as their next ka is greater than 65% to test this claim a random sample of 750 peoples are as if they plan to purchase a fully electric vehicle as the next car of these 750 people 513indicate that they do plan to purchase an electric vehicle in this example the p-value was … 0.026 come to a conclusion and enter interpret the results for this hypothesis test for a proportion use a significance level of 5%
- Question: The bar graph below shows the number of boys and girls in different classes. how many total students are in MS James class do not include the units in your answer?
- Question: A random sample of adults were … whether they prefer reading an eBook over a … book the server … in a sample proportion of P=0. 14 with the sampling standard deviation of z= 0.02 who … reading and eBook use the empirical rule to construct a 95% confidence interval for the true proportion of adults who prefer eBooks.
- Question: which of the following frequency table shows a … data set select all answers that apply
- Question: Data is … on the relationship between time spent playing video games and time spent with family the data is … in the table and the line of best fit for the data is Y is equal to AC. assume the line of best fit is significant and there is a strong linear relationship between the variables according to the line of best fit the … number of minutes spent with family for someone who spent 95 minutes playing video game is 31.8 5 it is responsible to use this line of best fit to make the above prediction
- Question: Suppose a Chef claims that her meatball weight is less than 4 answers on average several of our customers do not believe her so the Chef … to do a hypothesis test at a 10% significance level 2 … them she cooks for 3 meatballs the mean weight of the sample Meatballs is 3.7 Oz The Chef knows from experience that the standard deviation for her meatball weight is 0.5 Oz. what is the test statistics of this one mean hypothesis test … to 2 decimal places
- Question: A fitness Centre claims that the mean amount of time that a person spends at the gym per visit is 33 minutes identify the null hypothesis and alternative hypothesis in term of the parameter
- Question: In the description of the following experiment determine the experimental factor?
- Question: Given the following histogram decide if the data is …. or symmetrical?
- Question: A searcher is … in whether the variation in the size of human being is proportional throughout each part of the human to partly answer this question they … at the correlation between the foot length in mm and height in centimeters of 30 randomly … adult males. the data is …. below use Excel to calculate the correlation Coefficient between the two data sets round your answer to two decimal places
- Question: Student keeps track of the amount of time they study and the scores the get on her quizzes that that are … in the table below which of the scatter plots below accurately record the data
- Question: Find the median of the following list of points … from a random sample of chemistry final exams
- Question: 135 fitness Centre members work … if they run and if they lift weights the results are … in this table given that are randomly … survey participants does not run what is the probability that the participant lift weights provide your answer as a fraction
- Question: Choose All the True statements below.
- Question: Hugo who got … 45 words per minute in typing test on Wednesday the Z score when x is equal to 45 is the Z score tells you that X is 45 is standard deviation to the right left of the main correctly fill in the blanks in the statements above
- Question: Which of the data sets which … by the following box and whisker plot has the smaller standard deviation
- Question: The line graph shows below represent the number of thieves in a house by square footage according to the information above which of the following is an appropriate analysis of square footage and TVS
- Question: A survey was … where students in a class were … to state their eye color what is the level of measurement of the data
- Question: Charlie on the computer repair service for each computer they charge $50 plus $45 per hour of work a linear equation that expresses the total amount of money Charlie and per computer is Y = 50+ 45xwhat are the independent and dependent variables what is the y-intercept and the slope?
- Question: Recent studies … that 81% of senior citizen take at least one prescription medication Amelia is a nurse at a large Hospital who would like to know whether the percentage is the same for senior citizen patients who go to the hospital. she randomly … 59 senior citizens’ patients who were … at the hospital and find that 49 of them take at least one prescription medication what are the null and alternative hypothesis for the hypothesis test
- Question: Are research explains that the proportion of cars with manual transmission is less than 10% to test this claim a server check 1000 randomly … cars of those cars 95 had a manual transmission the following is the setup for the hypothesis test find the test statistics for the hypothesis test for the proportion round your answer to 2 decimal places
- Question: The following frequency table summarizes a set of data what is the five number summary
- Question: Fill in the following contingency table and find the number of students who both do not play sports and do not play an instrument
- Question: Table below gives the average life expectancy in years of a person from a certain country … on various pairs of birth. hair X represents the year of birth after 1990 and why represents the life expectancy use Excel to find the best fit linear regression equation round the slope and intercept to three decimal places
- Question: Find the graph that matches the following hypothesis test
- Question: Which of the following results is the null hypothesis u >38 and alternative hypothesis u<38? select the correct answer below
- Question: A small startup company wishes to know how many hours per week that its employees and commuting to and from work the number of hours for each employee are … below construct a frequency table for … data using 4 classes
- Question: The population standard deviation for the heights of talks in inches in a city is 3.7 inches if we want to … 95% confident that the sample mean is within 2 inches of the true population mean what is the minimum sample size that can …
- Question: Suppose you computed r= -0.259 using n=27data points using the critical values table below determine if the value of R is significant or not?
- Question: Select the correct answer below
- Question: A doctor knows her patients’ temperature in degrees Fahrenheit every hour to make sure the patient does not get a fever what is the level of measurement of the data
- Question: Which of the following shows independent events
- Question: A Medical Research explain that the proportion of people taking a certain medication that 12 serious side effect is 12% to test this claim a random sample of 900 people taking the medication is … and it is … that 93 people have experience serious Side Effects the following is the setup for the hypothesis test find the p-value for the hypothesis test for a perforation and round your answer to three decimal places
- Question: Statistics professor recently … final exams for student in her introductory statistics course in review of her grading she found the main score out of 100 points was a x = 77 with the margin of error of 10. construct a confidence interval for the mean score on the final exam
- Question: Kenneth a competitor in Cup stacking, claims that his average taking time is 8.2 seconds. during a practice session Kenneth has a sample stacking time mean of 7.8 seconds … on 11 trials at the 4% significance level does the data provide sufficient evidence to conclude that connects means taking time is less than 8.2 seconds. accept or reject the hypothesis given the sample data below
- Question: Describe the shape of the given histogram
- Question: Assume the null hypothesis is Jacob earns enough money to afford the luxury apartment find the type 1 error in this scenario?
- Question: Which show the correct null and alternative hypothesis for this test select the correct answer below:
