Statistics question and answers for October 17, 2023
- Q Part 0 4 Part 1 of 4 Calibrating a scale Making sure that the scales used by businesses in the United States are accurate is the responsibility of the National...
- Q 5 Select the appropriate word or phrase to complete the sentence 6 8 The smaller the P value is the stronger the evidence against the Choose one hypothesis becomes critical...
- Q Identify the following statements as true or false Part 1 of 4 If P 0 03 the result is statistically significant at the a 0 02 level The statement is...
- Q 13 In a study to investigate the effects of regular exercise on raising high density lipoprotein HDL cholesterol levels good cholesterol a random sample of five male subjects known to...
- Q 6 In Q1 what is the P value for the ANOVA that tests for equality of the population means of the three treatments P value 0 4173 a Less than...
- Q 8 An experiment examined the psychophysiological effect of THC the active ingredient in marijuana The study recruited a sample of 18 young adults who were habitual marijuana smokers Subjects came...
- Q 14 At The researcher is interested in testing the following one sided test Ho Initial and final HDL measurements have the same distribution H Final HDL levels are systematically lower...
- Q 12 If the standardized value of W is z 2 32 The researcher is interested in testing the following two sided test Ho No difference in distribution of scores Ha...
- Q 7 The ANOVA procedure relies on three important assumptions to be valid The data are independent random samples The populations are normally distributed or the sample sizes are large enough...
- Q 11 Some researchers have suggested that stem pitting disease in peach tree seedlings can be controlled with soil treatment An experiment was conducted to compare peach tree seedling growth with...
- Q 10 Researchers wish to examine the effectiveness of a new weight loss pill A total of 200 obese adults are randomly assigned to one of four conditions weight loss pill...
- Q 9 True False Interchanging the degrees of freedom for the F distribution changes the distribution so order of parameters is very important a True b False
- Q The accompanying table shows the maximum weights in kilograms for which one repetition of a half squat can be performed and the times on seconds to run a 10 meter...
- Q The accompanying data show the number of bacteria present after a certain number of hours Find the equation of the regression line for the data regression line with it Click...
- Q The maximum weights in kilograms for which one repetition of a half squat can be performed and the times in seconds to run a 10 meter sprint for 12 international...
- Q The accompanying data are the number of wins and the earned run averages mean number of earned runs allowed per nine innings pitched for eight baseball pitchers in a recent...
- Q The table to the right shows the average price of a movie ticket in a certain theater for the years 2009 to 2013 Draw a line graph that makes the...
- Q HW 9 1 Basic Principles of Hypothesis Testing Question 9 of 9 1 point Question Attempt 1 of 3 Type I error A company that manufactures steel wires guarantees that...
- Q Determine whether the alternate hypothesis is left tailed right tailed or two tailed Ho 50 H 50 The alternate hypothesis is Choose one
- Q Question 8 of 9 1 point Question Attempt 2 9 Coffee The mean caffeine content per cup of regular coffee served at a certain coffee shop is supposed to be...
- Q Question 9 of 9 1 point Question Attempt 1 of 3 Part 0 3 6 Part 1 of 3 8 Type I error A company that manufactures steel wires guarantees...
- Q 5 The outcome of the test is a Choose one Type 1 error correct decision Type 11 error 6 Determine whether the outcome is a Type I error a Type...
- Q 2 3 4 6 The alternate hypothesis is Choose one left tailed right tailed two tailed 7 Determine whether the alternate hypothesis is left tailed right tailed or two tailed...
- Q te word or phrase to complete the sentence en it is true is called a Choose one 7 error 06 Type II Type I 28 error and failing to reject...
- Q 3 4 5 6 Select the appropriate word or phrase to complete the sentence 7 8 9 The Choose one hypothesis states that a parameter is equal to a certain...
- Q Question 10 of 10 1 point Question Attempt 2 of 3 How s the economy A pollster wants to construct a 90 confidence interval for the proportion of adults who...
- Q Question 5 of 10 1 point Question Attempt 3 of 3 b Construct an 80 confidence interval for the proportion of smartphone owners aged 18 24 who have an Android...
- Q Part 2 of 3 b Construct a 99 confidence interval for the proportion of those aged 65 and over who have sleep apnea Round the answer to at least three...
- Q How s the economy A pollster wants to construct a 99 9 confidence interval for the proportion of adults who believe that economic conditions are getting better Part 1 of...
- Q Sleep apnea Sleep apnea is a disorder in which there are pauses in breathing during sleep People with this condition must wake up frequently to breathe In a sample of...
- Q Two dice are thrown a What are the odds in favor of getting a score of 12 b What are the odds against getting a 12 c What is the...
- Q Question 3 Since Hill Valley High School eliminated the use of bells between classes teachers have noticed that more students seem to be arriving to class a few minutes late...
- Q Quantitative variables are numerical values for which arithmetic operations such as means make sense It is usually a measure of some sort Categorical variables simply count which of several categories...
- Q The area under the standard normal curve is 1 The standard deviation of the standard normal curve is 1 The mean of the standard normal curve is 0 5 What...
- Q 3 Independent Sample T Test A researcher is interested in the difference in rural and urban people s attitudes towards gun control The researcher measures 30 participant s attitudes using...
- Q HW Problem 49 5 pts A manufacturing firm which produces specialty rods wants to pick the machine which produces them the most consistently i e with the least variability The...
- Q Given the 5 categories in the table below test the claim that the categories are equally likely to be selected at a a 0 01 significance level Ho all 5...
- Q Out of a sample of 100 adults aged 18 to 30 34 still lived with their parents Based on this construct a 90 confidence interval for the true population proportion...
- Q Out of of a sample of 400 families 180 had children under the age of 18 living in the home Based on this construct a 95 confidence interval for the...
- Q Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car They randomly survey 414 drivers and find that 309 claim...
- Q A study was conducted to determine whether there were significant differences between college students admitted through special programs such as retention incentive and guaranteed placement programs and college students admitted...
- Q A student was asked to find a 98 confidence interval for the proportion of students who take notes using data from a random sample of size n 80 Which of...
- Q Out of 600 people sampled 66 preferred Candidate A Based on this estimate what proportion of the voting population p prefers Candidate A Use a 99 confidence level and give...
- Q Given the 4 categories and distribution apply the Goodness of fit test at a 0 025 for the claim that the 4 categories occur with the following distribution Category A...
- Q 1 Single Sample T test A researcher would like to study the effect of alcohol on reaction time It is known that under regular circumstances the distribution of reaction times...
- Q Biologists studying the healing of skin wounds measured the rate at which new cells closed a razor cut made in the skin of an anesthetized newt Here are the data...
- Q Bob runs a huge chicken farm with thousands of chickens Weight of eggs is random and varies from chicken to chicken The distribution of weight of eggs is known to...
- Q You are performing a Chi Square test with test statistic x 1 33 and degrees of freedom of 12 find the p value to 4 decimal places P value is...
- Q You are performing a Chi Square test with a level of significance of a 0 93 and degrees of freedom of 13 find the critical value to 4 decimal places...
- Q Suppose that water usages in American showers are normally distributed with an average shower using 18 9 gallons and a standard deviation of 3 6 gallons Estimate the percentage of...
- Q A population of values has a normal distribution with 218 7 and o 95 1 You intend to draw a random sample of size n 48 Find the probability that...
- Q Suppose this distribution represents the probabilities of extending our class 2 minutes past the end of class time 0 20 0 1 5 The variable z is Select an answer...
- Q Select an answer Distributi Snapes Determine the shape of each distribution shown below n Select an answer Select an answer Select an answer
- Q For a goodness of fit test for a distribution with 3 categories what are the degrees of freedom for the x distribution for this test degrees of freedom
- Q On a particular college campus 30 of the students belong to a fraternity or sorority If 50 college students are randomly chosen a What is the probability that no more...
- Q XOT23 P x 0 0 15 1 0 25 0 15 3 0 45 Find the standard deviation of this probability distribution Give your answer to at least 2 decimal...
- Q Biologists tagged 193 fish in a lake on January 1 On February 1 they returned and collected a random sample of 33 fish 11 of which had been previously tagged...
- Q Suppose a vector x exists in your workspace Which of the following commands will always output a logical vector of the same length as x with all of its elements...
- Q Do shoppers at the mall spend the same amount of money on average the day after Thanksgiving compared to the day after Christmas The 56 randomly surveyed shoppers on the...
- Q Which of the following functions is not a vectorized function O is finite O is infinite O is na
- Q Suppose a logical vector x exists in your workspace Which of the following commands results in output identical to the output of all x O any x O any x...
- Q What is the output when you subset a numeric vector at an index greater than the length of the vector O NULL NaN
- Q Is it possible to decrease the length of a vector using subsetting without redefining the entire object For example redefining the entire object in this case refers to assignment such...
- Q Listed below are heights of a random sample of men and women Men Women 186 7 166 8 176 7 176 7 174 2 176 4 171 4 174 8...
- Q Suppose a numeric vector x exists in your workspace Which of the following commands will output a logical vector that indicates which elements of x are equal to either 2...
- Q Thanks to an initiative to recruit top students an administrator at a college claims that this year s entering class must have a greater mean IQ score than that of...
- Q A college recently advertised that 93 of its students graduate debt free A student advocacy organization thinks that the college s claim is unlikely The organization collected a random sample...
- Q The following confidence interval gives a range of likely values for the average nightly tip income for servers at an upscale restaurant 138 178 Determine the value of that was...
- Q A travel agency plans to develop a new ad campaign to entice visitors to come to the Treasure Coast As a part of the new campaign the agency would like...
- Q A Sebastian city official would like to estimate the average monthly rent of all rental units in Sebastian using a 96 confidence interval The standard deviation of the monthly rent...
- Q Suppose that follows a chi square distribution with 28 degrees of freedom Use the ALEKS calculator to answer the following a Compute P 20 x 43 Round your answer to...
- Q According to a Pew Research Center poll conducted last year 63 of American adults say that young adu should be financially independent by age 22 A social scientist would like...
- Q The average annual car insurance premium yearly cost in Florida is among the highest in the nation To estimate the average annual car insurance premium in Florida a data analyst...
- Q Determine the value of t necessary to construct a confidence interval when the sample size is 39 and the level of confidence is 90 O 1 6849 O 1 6859...
- Q A certain brand of mosquito repellent claims that it will effectively repel A local biologist thinks that the company s claim is exaggerated and the length of time for which...
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