Statistics question and answers for September 18, 2023
- Q COVID 19 novel corona virus took the world by surprise in late 2019 By early 2020 nearly all countries worldwide were affected Early reports from the U S Centers for...
- Q The Energy Star rating system is an energy efficiency program run by the U S Environmental Protection Agency EPA Energy Star certified appliances such as televisions and refrigerators are rated...
- Q The following bivariate data set contains an outlier X y 1708 2 2084 3 1367 2 718 4 30 7 72 8 17 4 63 4 19 7 442 4...
- Q X y 44 1 38 5 27 67 5 33 9 49 5 41 5 59 8 29 6 41 5 40 3 58 6 29 1 77 9 36...
- Q Write an equation in the form y mx b for the following table X 6 4 2 02 4 6 8 y 52 34 16 2 20 38 56 74
- Q Here is a bivariate data set X 71 4 70 43 1 92 6 76 4 55 4 79 9 122 1 50 2 66 5 81 4 49 3...
- Q Calculate the p value for each of the given hypothesis test scenarios below Round p values to four decimal places Find the p value for a left tailed test of...
- Q Calculate the critical t value s for each of the given hypothesis test scenarios below If multiple critical values exist for a single scenario enter the solutions using a comma...
- Q A new virus has taken root in a country Government officials are reporting that 7 3 of the population is currently infected with the virus However epidemiologists across the country...
- Q An airline company recently boasted about its 69 customer satisfaction rate A corporate watchdog group believes that this percentage is greatly exaggerated and the real percentage of satisfied customers is...
- Q Find the p value for a left tailed test of hypothesis for a mean when the test statistic has been calculated as 0 5175 and the sample size is 138...
- Q anin Nicole Consider these two students to be a population The population mean of their scores is 4 50 and the popula standard deviation of their scores is d 0...
- Q A person s protein requirement is the amount of protein they must consume in a day to maintain a stable weight muscle mass etc A group of researchers wanted to...
- Q ameter 3 The owner of a football team claims that the average attendance at games is over 68 800 and he is therefore justified in moving the team to a...
- Q Use the given information to find the P value Also use a 0 05 significance level and state the conclusion about the nu nypothesis reject the null hypothesis or fail...
- Q mulate the indicated conclusion in nontechnical terms Be sure to address the original claim 6 An entomologist writes an article in a scientific journal which claims that fewer than 3...
- Q 5 A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO P is less than 2 in every ten thousand Assuming that a hypothesis test...
- Q Assume that the data has a normal distribution and the number of observations is greater than fifty Find the critical z valt est a null hypothesis 12 12 a 0...
- Q Find the value of the test statistic z using z P P USE TWO 2 DECIMAL PLACES pq n 15 The claim is that the proportion of accidental deaths of...
- Q 14 In a sample of 88 children selected randomly from one town it is found that 8 of them suffer from asthma Find the P value for a test of...
- Q 7 According to a recent poll 53 of Americans would vote for the incumbent president If a random sample of 100 people results in 45 who would vote for the...
- Q 13 A manufacturer claims that fewer than 6 of its fax machines are defective In a random sample of 97 such fax machines 5 are defective Find the P value...
- Q 11 Use a significance level of a 0 01 to test the claim that u 2 85 The sample data consiste 9 scores for which x 3 1 and s...
- Q 10 Test the claim that the mean age of the prison population in one city is less than 26 years Sample data are summarized as n 25 x 24 4...
- Q 50 points Let xi y1 2 2 3 3 Xn yn represent n pairs of data points The variable X is x1 x2 X3 Xn The variable Y is y...
- Q The Kyoto Protocol was signed in 1997 and required countries to start reducing their carbon emissions The protocol became enforceable in February 2005 In 2004 the mean CO2 emission was...
- Q According to the Federal Trade Commission report on consumer fraud and identity theft 23 of all complaints in 2007 were for identity theft This year a certain state kept track...
- Q Ans II Mode LiveOnline Classrooz 1 Homework K Eighteen members of the executive committee of the Studer H and Vazquez V The preference table follows Determi Number of Votes 7...
- Q Lenign ad L Erie Road E and Ontario Road O The preference table follows to the right Determine the winner using the pairwise comparison method Choose the correct answer below...
- Q work ployees at the Me My Mop and I cleaning ee choices from first to third The preference mber of Votes st econd hird
- Q The weight of a car in pounds can influence the mileage in mpg that the car can obtain A random sample of 17 cars was taken and the weight and...
- Q There is a positive correlation between the length of time a tableware company polishes a dish and the price of the dish Does that mean that the time a plate...
- Q Find a formula for the general term a of the sequence assuming that the pattern of the first few terms continues Assume that n begins with 1 1 11 4...
- Q x y 1 0 1 0 2 0 2 0 M 10 9 8 1120 3 0 3 0 4 0 4 0 5 0 5 0 6 0 6...
- Q A manufacturer of banana chips would
- Q In a recent year the scores for the reading portion of a test were normally distributed with a mean of 22 1 and a standard deviation of 6 2 Complete...
- Q A manufacturer of potato chips would like
- Q The lifetime of a certain type of battery is normally distributed with mean value 13 hours and standard deviation 1 hour There are nine batteries in a package What lifetime...
- Q A sample of 900 computer chips revealed th
- Q At one university the mean distance commuted to campus by students is 18 0 miles with a standard deviation of 4 2 miles Suppose that the commute distances are normally...
- Q Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1 3 Round your answers to four decimal...
- Q Ms Parker gave her students a biology test last week Here are the test scores for each of the fifteen students 93 82 92 Test scores 83 95 91 81...
- Q As part of a survey 18 adults were asked How many hours did you spend at your job last week The results are shown in the stem and leaf display...
- Q According to the records of a soft drink company the bottles for their one liter sized products contain an average mean of 1 015 liters of beverage with a standard...
- Q The test scores of the students in four dasses are summarized below Answer the questions about them Class A The mean score is 118 and the range of scores is...
- Q Suppose that a random sample of 13 recently sold houses in a certain city has a mean sales price of 280 000 with a standard deviation of 14 000 Under...
- Q The ages of the members of four teams are summarized below Answer the questions about them Team A The range of ages is 6 and the mean age is 44...
- Q A newspaper article reported that people spend a mean of 7 5 hours per day watching TV with a standard deviation of 2 1 hours A psychologist would like to...
- Q The mean diastolic blood pressure for a random sample of 100 people was 83 millimeters of mercury If the standard deviation of individual blood pressure readings is known to be...
- Q The accompanying data are the shoe sizes and heights in inches of 14 men Find the equation of the regression line Then construct a scatter plot of the data and...
- Q There is a weekend fishing competition that Tom participates in each year There are several other fishing boats that participate in this competition Tom caught 38 fish at the competition...
- Q The ages in years of 10 men and their systolic blood pressures In for the man who is 48 years old and has a systolic blood pressure of 200 millimeters...
- Q For each of the scatter plots below determine whether there is a perfect positive linear correlation a strong positive linear correlation a perfect negative linear correlation a strong negativ linear...
- Q The accompanying data are the the regression equation to predict the value of y for each of the given x values if meaningful If the x value is not meaningful...
- Q The scatter plots below show the results of a survey of 20 randomly selected males 100 80 60 40 20 26 30 34 110 100 90 NO 70 WH Pa...
- Q Drag each graph given below to its corresponding regression equation to the right 70 60 50 40 30 20 10 140 120 100 80 60 40 20 10 10 20...
- Q K a Display the data in a scatter plot Choose the correct graph below OA OB Vocabulary size 3000 2400 1000 1200 600 0 0246 Age years Data Table Age...
- Q Construct a frequency distribution and a relative frequency histogram for the data set using five classes Which class has the greatest relative frequency and which has the least relative frequenc...
- Q The data represent the time in minutes spent reading a political blog in a day Construct a frequency distribution using 5 classes In the table include the midpoints relative frequencies...
- Q The data show the number of hours of television watched per day by a sample of 28 people Use technology to answer parts a and b below 8 9 0...
- Q K The table shows population statistics for the ages of Best Actor and Best Supporting Actor winners at an awards ceremony The distributions of the ages are approximately bell shaped...
- Q The life spans of a species of fruit fly have a bell shaped distribution with a mean of 30 days and a standard deviation of 5 days a The life...
- Q The midpoints A B and C are marked on the histogram Match them to the indicated scores Which scores if any would be considered unusual The point A corresponds with...
- Q An instructor has given a short quiz consisting of two parts For a randomly selected student let X the number of points earned on the first part and Y the...
- Q 2 3 corded here are the germination times in 22 15 19 20 12 12 20 17 17 15 Send data to calculator Send data to E suming that germination...
- Q An existing inventory for a te random sample of 80 individu limit and upper limit Carry your intermediate com
- Q Use the ALEKS calculator to a Consider a t distribu decimal places
- Q Listed below are student evaluation ratings of courses where a rating of 5 is for excellent The ratings were obtained at one university in a state Construct a confidence interval...
- Q 9 Suppose we wish to predict the profits in hundreds of thousands of dollars for a company that had sales in hundreds of thousands of dollars of 500 We use...
- Q 7 A 95 confidence interval for the slope 1 in the simple linear regression model is approximately A 126 0 3 B 126 61 0 28 15 C D none...
- Q Determine the critical value for a left tailed test of a population mean at the a 0 001 level of significance based on a sample size of n 16 Round...
- Q Find the standardized test statistic t for a sample with n 12 x 26 2 s 2 2 and a 0 01 if Ho 25 Round your answer to three...
- Q Carlos attends a fashion institute that has no on campus housing The mean distance commuted to campus among all students at the fashion institute is 27 kilometers with a standard...
- Q Determine the critical value for a right tailed test of a population mean at the a 0 025 level of significance with 19 degrees of freedom Round to three decimal...
- Q In 1945 an organization asked 1425 randomly sampled American citizens Do you think we can develop a way to protect ourselves from atomic bombs in case others tried to use...
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