Statistics question and answers for October 26, 2023
- Q The contingency table shows a random sample of engineering psychology and biology articles and if and how they were coauthored At a 0 10 can you conclude that the subject...
- Q 3 The linear model that goes with this dataset is Plant Height 0 267 Petal Length 4 533 Interpret the slope and y intercept of this linear model in context...
- Q 3 The linear model that matches this dataset is Tumor Size 1 017 Cigarettes Smoked 0 293 Interpret the slope and y intercept of this linear model in context
- Q Find the equation of the regression line for the given data Then construct a scatter plot of the data and draw the regression line The pair of variables have a...
- Q surgery durations for all brain tumor patients is 3 13 hours You are a data analyst for a health insurance company and want to test that claim To do so...
- Q The coefficient of determination r is the ratio of which two types of variations What does r measure What does 1 r measure The coeffcient of determination is the ratio...
- Q A manufacturer withdrew Drug V from the market after a study revealed that its use was associated with an increase in the risk of heart attack The experiment was placebo...
- Q Describe the range of values for the correlation coefficient Choose the correct answer below A The range of values for the correlation coefficient is 0 to 1 inclusive OB The...
- Q Identify the explanatory varia and the response variable A farmer wants to determine if the amount of sunlight received by similar crops can be used to predict the harvest of...
- Q What conditions are necessary in order to use the t test for testing the difference between two population Choose the correct answer below O A The population standard deviations are...
- Q Two variables have a positive linear correlation Does the dependent variable increase or decrease as the independent variable increases What if the variables have a negative linear correlation When two...
- Q 2 Abiezer and Syed have been talking smack about each other as they prepare to compete head to head in a big bowling tournament The following table shows each of...
- Q Outpatient Satisfaction Likert Score 0 to 5 Dependent Variable Outpatient Satisfaction Likert Score 0 not satisfied to 5 Very Satisfied vs Time minutes with Doctor in Outpatient Clinic Consultation Scatter...
- Q 1 Marcus wants to prove that vanilla ice cream is the best and so polls 100 of his fellow students as to their favorite flavor His results are as follows...
- Q 3 700 students were asked how they get to school The For the included pie chart determine the following information results are shown below NOTE the number in brackets next...
- Q In a randomized experiment from the University of Wisconsin one group consisted of a representative sample of 53 obese children ages 9 to 12 who had been randomly assigned to...
- Q Researchers examined a random sample of 331 patients who had recovered from traumatic brain injuries resulting in coma The patients were given an IQ test shortly after awakening from their...
- Q A 2017 study examined whether an anti epileptic drug AED therapy affects bone density The study recruited pairs of siblings in which one sibling was undergoing AED therapy while the...
- Q 43 PCC Lee Name 6 pts Tree diameters in a plot of land are normally distributed with a mean of 14 inches and a standard deviation of 3 2 inches...
- Q 0 4 0 2 0 1 Answer each of the following questions completely This assignment is worth 15 points 1 6 pts Based on past results found in the Information...
- Q claims that 38 of the population of all pregnant women actually gave birth the week of their due date You are a researcher who wants to test this claim so...
- Q 0 0 2 1 0 05 2 0 25 3 0 5 Find the standard deviation of this probability distribution Use your mean rounded to 2 decimal places Give your...
- Q X 0 1 2 3 P x 0 1 0 15 0 15 0 6 Find the mean of this probability distribution Round your answer to one decimal place Question...
- Q Four hundred consumers were surveyed about a new brand of snack food Crunchicles Their age groups and preferences are given in the table Liked Crunchicles Disliked Crunchicles No Preference Total...
- Q A food manufacturer claims that eating its new cereal as part of a daily diet lowers total blood cholesterol levels The table shows the total blood cholesterol levels in milligrams...
- Q Add Work Submit Question Question 2 0 1 pt100 Detai In a national survey of eating habits 3800 adults were selected randomly and contacted by telephone Respondents were asked Typically...
- Q In a study the sample is chosen by writing everyones name on a playing card shuffling the deck then choosing the top 20 cards What is the sampling method Simple...
- Q treatment experiment retrospective study cases or subjects observational study Definitions a a study in which data from the past is examined b experimental conditions imposed on the subjects c a...
- Q Which of the below data sets has the lowest standard deviation You do not need to calculate the exact standard deviations to answer this question 0 1 3 3 3...
- Q z score of 1 indicates a point that is one than the m
- Q Does a low calorie meal pay off Some dieters say that eating less at just one meal is ineffective because people compensate by eating more at other meals but a...
- Q Scores on a test are normally distributed with a mean of 160 and a standard deviation of 12 Using the z score table the estimated probability that a randomly selected...
- Q The average always has a z score value 46
- Q In the MathMeeting video in the section looking at the test scores what is the probability a student scored less than 75 The p 75 and the o 10 P...
- Q The lengths of time in years it took a random sample of 32 former smokers to quit smoking permanently are listed Assume the population standard deviation is 6 4 years...
- Q Find the standardized test statistic t to test the claim that H H Two samples are randomly selected and come from populations that are normal The sample statistics are given...
- Q The grade point averages for 10 randomly selected high school students are listed below Assume the grade point averages are normally distributed 2 0 3 2 1 8 2 9...
- Q arch center claims that 31 of adults in a certain country would travel into space on a commercial flight if they could afford it In a random sample of 700...
- Q Identify the sampling technique used Every fifth person boarding a plane is searched thoroughly O A cluster OB random OC stratified O D convenience OE systematic
- Q The distribution of blood types for 100 Americans is listed in the table If one donor is selected at random find the probability of selecting a person with blood type...
- Q The distribution of Master s degrees conferred by a university is listed in the table Major Frequency Mathematics English Engineering Business Education 216 207 72 176 222 What is the...
- Q Use the given frequency distribution to find the a class width b class midpoint of the first class c class boundaries of the first class a 3 OA b 51...
- Q 1 Here are the quiz scores from a period of geometry students at North High School 56 89 98 90 65 32 34 74 95 88 96 57 84 74...
- Q Find the mean of the binomial distribution for which n 50 and p 0 2 needed OA 10 00 B 2 83 C 50 00 OD 25 00 und
- Q A survey of 280 homeless persons showed that 63 were veterans Construct a 90 confidence interval for the proportion of homeless persons who are veterans OA 0 184 0 266...
- Q 2 IQ Scores Intelligence Quotient A measure of intelligence have a mean of 100 and a standard deviation of 16 Albert Einstein reportedly had an IQ of 160 a Calculate...
- Q claims that 38 of the population of all pregnant omen actually gave birth the week of their due date You are a researcher who wants to test this claim so...
- Q 4 Wealth in our country is slowly becoming more and more concentrated in the top 1 of people only Is wealth in the US something that is normally distributed Explain...
- Q information service you want to test that claim To do so you select a random sample of 45 cell phones of the manufacturer s latest model and record their battery...
- Q 3 An ornithologist is studying a population of birds He finds them to have a mean wingspan of inches with a standard deviation of 0 25 inches A What percentage...
- Q 3 What percent of young women have heights between 62 and 72 inches Show your work
- Q 67 of U S adults have very little confidence in newspapers You randomly select 10 U S adults Find the probability that the number of U S adults who have...
- Q nts of young women aged 18 to 24 is approximately N 64 5 2 5 1 Sketch a Normal density curve for the distribution of young women s heights Label...
- Q 2 Giraffes can be found in many countries in Africa Two examples are Somalia and Kenya Scientists wish to study giraffe height in these two countries because it is an...
- Q 1 The data below shows the top medal earning countries during the 2020 2021 Summer Olympics in Tokyo Japan a Find and interpret the country in the 33rd percentile SHOW...
- Q this claim so you will select a random sample of 40 women who have recently given birth Follow the steps below to construct a 90 confidence interval for the population...
- Q subjects In each case it was known if the subjected lied or did not lie Did not Actually lied actually lie Polygraph indicated subject lied Polygraph indicated subject did not...
- Q The table lists the number of games played from 4 to 7 in the Major League Baseball championship the World Series over the last 100 years It also includes the...
- Q adults in a certain country would travel into space on a commercial flight if they could afford it In a random sample of 700 adults in that country 34 say...
- Q Determine the probability distribution s missing value The probability that a tutor will see 0 1 2 3 or 4 students X 1 1 022 P x 0 41 OA...
- Q A parameter is a numerical description of a characteristic characteristic A statistic is a numerical description of
- Q The mean IQ score of adults is 100 with a standard deviation of 15 Use the empirical rule to find the percentage of adults with scores between 70 and 130...
- Q ship World Series over the last 100 years It also includes the expected proportions for the number of games played with teams of equal abilities Games Played Actual Contests Expected...
- Q K The accompanying table shows asked if they contribute to a retirement savings plan at work Complete parts a and b below Click the icon to view the survey results...
- Q Decide if the events A and B are mutually exclusive or not mutually exclusive A date in Philadelphia is selected A It rains that day B It snows that day...
- Q weights for all Herdwick sheep is 4 54 kg A veterinary service has hired you to test that claim To do so you select a random sample of 35 Herdwick...
- Q The weights in pounds of 30 preschool children are listed below Find the five number summary 27 27 5 28 28 28 5 31 32 32 5 32 5 37...
- Q Use the standard normal distribution to find P 2 25 z 1 2 Click here to view page 1 of the standard normal table Click here to view page 2...
- Q Data collected by a researcher trying to gather information on a real world issue is considered 42
- Q The random variable x represents the number of boys in a family of three children Assuming that boys and girls are equally likely find the mean and standard deviation for...
- Q Classify the two given samples as independent or depende Sample 1 The weights in pounds of 14 newborn females Sample 2 The weights in pounds of 14 newborn males O...
- Q In class of 20 students a teacher predicts this distribution of final exam grades based on past experience Grade Frequency A 5 6 7 2 The actual class final exam...
- Q Data means so many things to people Some think of data as just a set of numbers that have been collected However there are many different kinds of data Data...
- Q Designing situations to compare treatments with live subjects divided into two or more groups is called a n Select one O a placebo O b experiment OC simulation O d...
- Q For a recent year the numbers of homicides that occurred each month in a particular city were The police commissioner believes that homicides occur more often during the summer when...
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