Statistics question and answers for September 11, 2023
- Q A corporation creates a sinking fund in order to have 450 000 to replace some machinery in 10 years How much should be placed in this account at the end...
- Q The table below shows the calories of a hamburger at a fast food chain over the years Find the line of best Oy 18 252 36 240 y 18 25x...
- Q The table below represents the change in calories of a muffin over the years Find the line of best fit Year Calories 50 1970 60 1980 Oy 3 226 237...
- Q e National Center for Health Statistics published the results of a national health survey from 1960 to 1962 Use the 6 99 7 normal distribution curve to find the percentage...
- Q A group of researchers measured the cholesterol level of middle aged people in Iran They investigated possible relationships between age cholesterol level activity and body mass index BMI The low...
- Q The National Center for Health Statistics published the results of a national health survey from 1960 to 1962 The results are shown in the table below Which of the statements...
- Q CONTENTS Section 4 An Extended Exploration k variance because the variance is approximately average squared difference between values and m The formula for o wolves absent is sum of squared...
- Q Which of the following illustrates the gender wage problem A business decides to hire more men to better appeal to its client base OA man is hired for a job...
- Q The graph below shows the percentages of the population over sixty five in each county What percent of the population would you expect to have either less than 6 or...
- Q A letter home to the parents of seniors at Westgate High School says a simple random sample of 30 Westgate seniors that took the SAT M test this year produced...
- Q In 1940 there were 1 211 684 males born and 1 148 715 females born What is the ratio of males to females 01 055 62 969 0 948 1...
- Q From experience an airline knows that only 80 of the passengers booked for a certain flight actually show up If 9 passengers are randomly selected find the probability that more...
- Q Which of the following best describes a case in which the variables being studied are themselves affected by discrimination O A company s clients are primarily white males who dislike...
- Q Which of the following are factors for which researchers should control studies about the gender wage question Select all that apply education work experience maternity leave starting salary field of...
- Q A study of men and women s salaries in which the significance level is 0 05 finds that 100 male college graduates earn more than 100 female high school graduates...
- Q If as Blau and Khan have argued 41 of the gender wage gap cannot be attributed to education experience industries occupations and union status we can infer that it is...
- Q A luxury car company makes only a few cars a month In the first six months of this year they make 6 5 6 7 9 6 cars Which of...
- Q Many studies submitted for publication as articles in journals are peer reviewed When a study is peer reviewed it is evaluated by a team of professionals working in the same...
- Q Which is an example of a longitudinal study A researcher samples a population and assigns one group to stop smoking another group to exercise A researcher samples a population and...
- Q Which of the following factors may negatively impact the results of a longitudinal study Select all that apply death of participants accuracy in observing changes availability of participants ability to...
- Q Identify the elements of a longitudinal study Select all that apply observational research method long term study experimental research method short term study controlled conditions applies treatment
- Q A team of researchers identified a sample of the general population for a study that began an exercise program to determine health benefits of exercise for cancer survivors What is...
- Q Consider the Cancer Risk Factor Chart Which reasons critique the author s focus on cancer and exercise Select all that apply 25 20 15 10 5 0 3 0 Individual...
- Q Which of the following are reasons for selective reporting Select all that apply A researcher wants the fame for finding the relationship even though the relationship does not exist There...
- Q You were comparing rats age and the time they took to run through a maze You measured many other variables and your conclusion is that rats with longer tails took...
- Q You were running a trial and measured lots of supporting data in case something affected the results for the trial You find a couple of unexpected correlations in this supporting...
- Q Which acts are evidence of confirmation bias Select all that apply only recording evidence that confirms your expectations ignoring evidence that defies your expectations conducting experiments that you know will...
- Q You want to study the migration patterns of Canadian geese so you radio tag some geese that you catch in your local marsh Which kind of selective reporting are you...
- Q Which of the following would be done with the two sample t test O comparing how many hours men vs women sleep O comparing pass fail rates of men vs...
- Q A sample of people who completed a 250 mile backpacking trip gives values of 20 0 21 3 22 5 22 2 23 1 24 7 and 12 5 days...
- Q Which of the following would be measured with parametric statistics Select all that apply human height number of fish in a lake whether students pass or fail depending on whether...
- Q Which of the following would be measured with non parametric statistics Select all that apply weights of toddlers number of bears in a sector in Yellowstone customer satisfaction measured on...
- Q Which of the following is the correct kind of point estimate for data of 1 2 2 3 9 and why Take the mean due to the small sample size...
- Q When given a statistic like four out of five dentists recommend this toothpaste you should Take it as truth Read the fine print O Go buy the toothpaste right away...
- Q What are reasons a statistic could be misleading Select all that apply it came from a simple random sample all the information from the sample is given the survey had...
- Q Why is the following graph misleading Select all that apply Number of singles sold 1995 1996 1997 1998 2018 Glynlyon Inc Ono labels on the y axis the slanted axes...
- Q Identify why this graph is misleading 7 2 6 9 6 6 6 3 6 Conversion Rate November December 2018 Gynon Inc O the y axis does not start at...
- Q 18 734 No high school diploma 27 915 High school diploma 51 206 Bachelor s degree 74 602 Advanced degree 2018 Glynyon Inc Othere are no labels Othere are no...
- Q Examine the graph below and give reasons as to why it is misleading Select all that app BETWEEN 2007 AND 2014 MORE STUDENTS EARNED THEIR HIGH SCHOOL DIPLOMAS THAN EVER...
- Q What is misleading about this graph Number of hurricanes 2109 11 9886 5 4 3 2 TO 1 0 Misleading Bar Graph Hurricanes Increasing in the 1990s 2 1992 1994...
- Q The stem and leaf display below gives sample air fares from St Louis to two cities Salt Lake City and Cincinnati There were 20 air fares recorded for the Salt...
- Q Eye color is determined by your genes You took two random samples of people in your town In one sample 15 out of 30 had brown eyes In your second...
- Q The color of your eyes is determined by your genes Eight percent of the world s people have blue eyes This inspires you to do your own sampling You find...
- Q A tutoring center advertised it could raise a student s college entrance exam score by 10 points A random sample of 50 students had a mean increase of 8 points...
- Q Select the terms that best complete the statement All the students in a school district take the same standardized test in Grade 11 The average score is 79 4 with...
- Q A state s public health department randomly contacted 30 hospitals in the state to find the number of cases of flu reported in the previous week The mean was 83...
- Q The sandwich chain was embarrassed to find out that the mean length of a foot long sandwich is less than a foot They made some changes and asked you to...
- Q A grocery sold hamburger in one pound packages An inspector weighed thirty five packages and found a mean of 1 84 pounds with a standard deviation of 0 03 pounds...
- Q An inspector tested the weights of one pound packages of hamburger twice Each time 40 random packages were tested The mean was 1 08 for both samples but the first...
- Q A sandwich chain advertises that it has foot long sandwiches Wanting to know if this advertisement is accurate you measured a random sample of forty sandwiches and found the mean...
- Q When you increase the confidence level from 90 to 95 the width of the margin of error increases O decreases O remains the same might increase or decrease
- Q When you increase the sample size the confidence interval increases decreases O remains the same Omight increase or decrease
- Q Your parents bought you a used car for your seventeenth birthday and you want to know how many miles to a gallon the car gets You kept records for the...
- Q A confidence interval of 90 means that 90 of the time the true value is in the interval O you can be confident that 90 of sample data is within...
- Q If you want to reduce the size of a 95 confidence interval found from a sample of one hundred pieces by a factor of five how many pieces need to...
- Q Under which circumstances should you report a confidence interval Select all that apply how much grain was harvested from a farm field a student newspaper poll with a sample of...
- Q A fish farmer selects a sample of fish from one of the ponds in which all of the tilapia were spawned at the same time If the sample mean length...
- Q What does it mean if a confidence interval is nearly as large as the range of possible values for a measurement The sample size is too small and needs to...
- Q Which of the following are situations where you need to be confident that your sample represents the whole population the results from election day Opolling prior to an election when...
- Q If you want to reduce a confidence interval to half of its former size how much larger does the sample need to be Otwice as large O four times as...
- Q A report from a drug company states that the confidence interval of the amount in milligrams of active ingredient in one of their pills is 59 934 60 046 that...
- Q Which of the following are good uses of statistical methods Select all that apply understanding measurements better communicating your results precisely confusing your audience Omanipulating your data understanding what your...
- Q What is the 90 confidence interval for the weight of house cats if a sample of one hundred house cats had an averag weight of eleven pounds and the population...
- Q 500 000 pie chart represents how Harriet spent her Lottery winnings of Examine this graph and then answer the questions on the next page Gifts 10 Savings 20 Unused 30...
- Q A company has many salespersons working in many sales regions The volume of sales generated by each person was calculated for the first day in September The standard deviation of...
- Q A company offers all its employees a physical each year The blood cholesterol level for men aged 30 to 39 has a standard deviation of 12 mg dL For women...
- Q 7 Jim spends his weekly income as follows food 200 outstanding loan payments 10 transportation 50 rent 125 and miscellaneous items 25 You are asked to construct a circle graph...
- Q A company offers its employees a free physical each year The blood cholesterol level for women aged 30 to 39 has a standard deviation is 38 mg dL The blood...
- Q When testing for a difference between two population means using a z test you obtain a z score of 2 15 What is the total area under the two tails...
- Q The following data give the total rebounds per game x and points per game y for a random sample of 11 professional basketball players 9 8 7 Create a scatterplot...
- Q You have two samples Sample 1 has 200 African American people and Sample 2 has 300 Hispanic people Sample 1 has 104 individuals with type O and Sample 2 has...
- Q You performed a simulation to examine mutation proportions You put fifty candies in each of two bags You hit both bags with a book to simulate a genetic mutation occurring...
- Q What critical value would you use when you want a 95 confidence level on a two tailed test Confidence Level 2 a Critical z score 5 1 645 1 96...
- Q Let z represent the calculated z score If your critical z score is 1 96 when do you reject the null hypothesis for a two tailed test When z 1...
- Q The data shown below is collected from a sample 8 5 8 9 8 8 9 1 8 2 8 0 9 0 8 6 8 4 8 3 8...
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