Statistics question and answers for January 02, 2024
- Q 1 Consider a normal population distribution with the value of o known a What is the confidence level for the interval x 2 810 n b What is the confidence...
- Q 5 On the basis of extensive tests the yield point of a particular type of mild steel reinforcing bar is known to be normally distributed with o 100 The composition...
- Q A psychologist counsels people who are getting divorced A random sample of ten of her patients provided the data in the following scatterplot where x number of years of courtship...
- Q A researcher wants to test if college students ages 18 25 consume more alcohol per year than non college students ages 18 25 They randomly selected 500 college students and...
- Q A researcher wants to test if college students ages 18 25 consume more alcohol per year than non college students ages 18 25 They randomly selected 500 college students and...
- Q Previous Problem Entered MUNOT 7 MU 77 10 2036 YES Problem List Next Problem Answer Preview MUNOT 7 MU 77 10 2036 At least one of the answers above is...
- Q Engineers must consider the breadths of male heads when designing helmets The company researchers have determined that the population of potential clientele have head breadths that are normally distributed with...
- Q You really struggle remembering to bring your lunch to work Each day seems to be independent as to whether you remember to bring your lunch or not The chance that...
- Q Suppose the mean starting salary for nurses is 66 239 nationally The standard deviation is approximately 10 660 The starting salary is not normally distributed but it is mound shaped...
- Q You have a really annoying stapler that seems to randomly jam On any given attempt to staple it seems to independently jam 17 2 of the time a Out of...
- Q The figure below is translated right 5 units What are the coordinates of the image of point P after this transformation 12 11 10 9 8 7654321 10 45078 10...
- Q Refer to the table below Given that 2 of the 149 subjects are randomly selected complete parts a and b Group Type Rh Rh 0 49 11 A 40 9...
- Q 2 The following data set was collected from a survey Yes No No No Yes Yes No Yes No No Yes No No Yes No What is the relative frequency...
- Q 11 Let f x x ax 2 Determine the values of a and b so that f x has a vertical asymptote at x 3 but no x bx 3...
- Q J and K are independent events P J K 0 22 Find P J P J 0 22
- Q To the right are the outcomes that are possible when a couple has three children Refer to that list and find the probability of each event a Among three children...
- Q If a couple were planning to have three children the sample space summarizing the gender outcomes would be bbb bbg bgb bgg gbb gbg ggb ggg a Construct a similar...
- Q Draw a tree diagram for spinning Spinner A two times and then Spinner B one time Use the diagram to find the number of possible outcomes OA RB B R...
- Q J and K are independent events P J K 0 22 Find P J P J
- Q Giving a test to a group of students the grades and gender are summarized below A C Male 7 17 13 Female 4 12 9 Total 11 29 22 B...
- Q Let X represent the full height of a certain species of tree Assume that X has a normal probability distribution with 203 6 ft and o 90 ft You intend...
- Q O Points 0 of 2 The table provided below shows paired data for the heights of a certain country s presidents and their main opponents in the election campaign Construct...
- Q Minh a psychology student kept a record of how much time she spent studying for each of her 20 point psychology quizzes and her score on each quiz Hours Spent...
- Q The table shows the worldwide box office in billions of dollars for the movie industry during the years shown Year 2000 2002 2004 2006 2008 Box office in billions of...
- Q The population proportion of success is 21 and the intended sample size is n 11 Before drawing a sample from the population you first want to describe the expected sampling...
- Q When you take samples from a population and compute a proportion from each one you can consider the distribution of those proportions This is called the sampling distribution for the...
- Q Suppose the mean starting salary for nurses is 66 239 nationally The standard deviation is approximately 10 660 The starting salary is not normally distributed but it is mound shaped...
- Q The amount of time to complete a physical activity in a PE class is approximately normally distributed with a mean of 35 8 seconds and a standard deviation of 5...
- Q The actual volumes of quart size jars of Hellmann s mayonnaise are uniformly distributed from 31 4 t 32 57 fluid ounces Find the average volume of a quart size...
- Q A local unemployment agency keeps track of the number of new claims filed each day Based on the data collected it determines the following discrete probability distribution where X is...
- Q You have a really annoying stapler that seems to randomly jam On any given attempt to staple it seems to independently jam 17 2 of the time a Out of...
- Q Determine if the following scenario is a binomial experiment If it is not binomial then select all of the reasons why Brand A has a history of recalling 27 of...
- Q A CBS News poll conducted June 10 and 11 2006 among a nationwide random sample of 651 adults asked those adults about their party affiliation Democrat Republican or none and...
- Q A student kept a record of how much time he spent studying for each of his 20 point health quizzes and his score on each quiz Complete parts a through...
- Q Complete the following probability distribution table X 21 12 42 64 66 69 P X 0 22 0 13 0 15 0 13 0 13
- Q An appliance dealer sells three different models of upright freezers having 13 6 16 0 and 19 3 cubic feet of storage space Consider the random variable x Amount of...
- Q 6 In a survey 12 people were asked how much they spent on their child s last birthday gift The results appeared bell shaped with a mean of 87 and...
- Q Consider n independent trials of an experiment in which each trial has two possible outcomes success or failure The probability of a success on each trial is p and the...
- Q OBFW Publishers A media report claims that 50 of U S teens with smartphones feel addicted to their devices A skeptical researcher believes that this figure is too high She...
- Q A large clinical trial of the effect of diet on breast cancer assigned women at random to either a normal diet or a low fat diet To check that the...
- Q Only about 10 of all people can wiggle their ears Is this percent higher for millionaires Of the 334 millionaires surveyed 37 could wiggle their ears What can be concluded...
- Q You wish to test the following claim Ha at a significance level of a 0 10 Ho P P2 Ha P1 P2 You obtain 28 5 successes in a sample...
- Q 51 of students entering four year colleges receive a degree within six years Is this percent different from for students who play intramural sports 108 of the 216 students who...
- Q The US Department of Energy reported that 50 of homes in the USA were heated by natural gas A random sample of 335 homes in Oregon found that 130 were...
- Q 5 1 pt A population is normally distributed with a standard deviation of 2 6 From a sample of size 45 you find a sample mean of 61 Find a...
- Q 4 A college president commissioned a study to find the proportion of students enrolled at her college that binge drink In the study 150 out of 320 students admitted to...
- Q 1 1 pt Suppose you compute a confidence interval with a sample size of 40 What will happen to the confidence interval if the sample size increases to 75
- Q 2 1 pt Suppose you compute a 95 confidence interval What will happen to the confidence interval if you increase the confidence level to 99
- Q 3 1 pt Rewrite the confidence interval 43 4 in interval form
- Q 1 Visitors to the Monterey Bay Aquarium The Monterey Bay Aquarium founded in 1984 is situated on the beautiful coast of Monterey Bay in the his toric Cannery Row district...
- Q Which of the following is NOT an assumption or condition for a hypothesis test for two means Randomization Assumption Independence Assumption Success Failure Condition Is n big enough
- Q A newsgroup is interested in constructing a 95 confidence interval for the difference in the proportions of Texans and New Yorkers who favor a new Green initiative Of the 593...
- Q Two samples are taken with the following numbers of successes and sample sizes 71 33 72 38 n 90 n 64 Find a 97 confidence interval round answers to the...
- Q Cereal for Breakfast A parent claims that kids eat cereal for breakfast more often than adults A statistics loving friend of the parent does some internet research and finds the...
- Q Sample A has 796 number of successes from a sample size of 805 Sample B has 794 number of successes from a sample size of 815 Find the 95 confidence...
- Q In a survey funded by the UW school of medicine 750 of 1 000 adult Seattle residents said they did not believe they could contract a sexually transmitted infection STI...
- Q A CCBC professor claims that there is a difference between the mean class score of statistics day students on Test 3 and statistics evening students on the Test 3 The...
- Q 5 15 Saving Birds from Windows Many birds are injured or killed by flying into windows It appears that birds don t see windows Can tilting windows down so that...
- Q A researcher has developed a new drug designed to reduce blood pressure In an experiment 21 subjects wer assigned randomly to the treatment group and received the new experimental drug...
- Q A veterinarian was studying suspected causes of enteroliths concretelike balls in the colons of horses She suspected that a diet of mostly alfalfa could be a cause In a study...
- Q A candidate for one of Ohio s two U S Senate seats wishes to compare her support among registered voters in the northern half of the state with her support...
- Q Students conducted a survey and found out that 36 of their peers on campus had tattoos but only 4 of their peers were smokers The standard error of of tattooed...
- Q Students conducted a survey and found out that 36 of their peers on campus had tattoos but only 4 of their peers were smokers If 100 students were surveyed can...
- Q A veterinarian does research on the causes of enteroliths stones that develop in the colon of horses She suspects that feeding alfalfa might be a cause To investigate that suspicion...
- Q The law of large numbers states that as the number of observations drawn at random from a population with proportion p increases the proportion of the observed values p O...
- Q Eggs that are contaminated with salmonella can cause food poisoning among consumers A large egg produce takes an SRS of 200 eggs from all the eggs shipped in one day...
- Q Nursing faculty at a local college were interested in seeing if the mean starting salaries for newly graduated registered nurses RN in Baltimore is less than the mean starting salaries...
- Q Do SAT coaching classes work Do they help students to improve their test scores Four students were selected randomly from all of the students that completed an SAT coaching class...
- Q A CCBC professor claims that there is a difference between the mean class score of statistics day students on Test 3 and statistics evening students on the Test 3 The...
- Q A researcher wants to test if college students ages 18 25 consume more alcohol per year than non college students ages 18 25 They randomly selected 500 college students and...
- Q 25 Significant does not mean important Never forget that even small effects can be statistically significant if the samples are large To illustrate this fact consider a sample of 148...
- Q step 29 I ll stop smoking soon Chantix is different from other quit smoking products in that it targets nicotine receptors in the brain attaches to them and blocks nicotine...
- Q 3 7 Peanut Allergies In the last 10 years the prevalence of peanut allergies has doubled in Western countries Is consumption or avoidance of peanuts in infants related to the...
- Q 17 Truthfulness in online profiles Many teens have posted profiles on a social networking website A sample survey in 2007 asked a random sample of teens with online profiles if...
- Q 23 How big a difference Give a 95 confidence interval for the difference between the proportions of students passing the HSA who have received or not received for mal musical...
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