Statistics question and answers for December 31, 2023
- Q 37 Improving your tips Researchers gave 40 index cards to a waitress at an Italian restaurant in New Jersey Before delivering the bill to each customer the waitress ran domly...
- Q od and food In a study of the effects of mood on evaluation of nutritious food 208 subjects were ran domly assigned to read either a happy story to induce...
- Q 11 Weeds among the Corn Lamb s quarter is a common weed that interferes with the growth of corn An agriculture researcher planted corn at the same rate in 16...
- Q 3 Smart Watch Battery Life To check the lifetime of a new battery in a soon to be released smart watch with GPS an engineer used the GPS tracking fea...
- Q 1 1 Smartphones and Spouses Choose a random sample of 100 married couples Ask each member of the couple how much time they spend looking at their smartphone while at...
- Q 2 According to the National Institute on Alcohol Abuse and Alcoholism 45 of college students nationwide engage in binge drinking behavior having 5 or more drinks in one occasion during...
- Q 1 According to the records of an auto insurance company the average distance that their customers drive to work is 17 4 miles You are a new agent and you...
- Q 2 The standard error has a value of Put the letter as answer choice in the answer box A 7 6056 B 0 4111 C 18 5000 D 2 7578...
- Q Find the x intercept of the line y 6 6 x 6 Write your answer as an integer or as a simplified proper or improper fraction not as an ordered...
- Q Complete the process of solving the equation Fill in the missing term and select the missing description Simplify any fraction b 12 20 14 b 12 6 b Divide both...
- Q Complete the process of solving the equation Fill in the missing term and select the missing description Simplify any fraction 69 t 9 19 61 9 10 t Multiply both...
- Q A group of engineers developed a new design for a steel cable They need to estimate the amount of weight the cable can hold The weight limit will be reported...
- Q Complete the process of solving the equation Fill in the missing term on each line Simplify any fractions 3y 1 1 3y y Subtract 1 from both sides Divide both...
- Q Find the slope of the line y 8 x 10 Write your answer as an integer or as a simplified proper or improper fraction
- Q Find the y intercept of the line y 8 13 Write your answer as an integer or as a simplified proper or improper fraction not as an ordered pair
- Q Give the mode for following GFDT Recall there is a definition for the mode appropriate for GFDTS Data Frequency 50 54 10 55 59 19 60 64 10 65 69...
- Q Here is a sample data set 533 1 619 9 541 2 526 6 434 6 526 6 478 6 539 3 534 4 505 5 431 2 613 4...
- Q Outside a home there is an 8 key keypad with letters A B C D E F G and H that can be used to open the garage if the...
- Q Determine whether the statement below is true or false If it is false rewrite it as a true statement When you divide the number of permutations of 11 objects taken...
- Q The percent distribution of live multiple delivery births three or more babies in a particular year for women 15 to 54 years old is shown in the pie chart Find...
- Q Approximate the measures of center for following GFDT Data Frequency 70 74 75 79 80 84 85 89 90 94 95 99 100 104 105 109 110 114 mode median...
- Q Calculate the 10th percentile of the data shown X 1 1 9 11 3 12 2 13 5 15 5 21 2 23 3 27 9
- Q The 81 th percentile of lightbulb lifespan is 1500 hours What does this mean of light bulbs have a lifespan of less than or equal to 1500 hours 06 CH
- Q Here is a data set 12 21 21 43 10 18 37 23 36 35 39 12 23 42 27 18 31 17 22 28 16 20 49 26 23...
- Q The highway mileage mpg for a sample of 8 different models of a car company can be found below Find the 5 number summary and use it to create a...
- Q A set of data items is normally distributed with a mean of 112 and a standard deviation of 15 Convert each of the following data items to a z score...
- Q Calculate the standard deviation of the sample data shown to X 21 8 12 4 25 1 19 6 16 3 8 7 26 8
- Q Approximate the mean for following GFDT Data Frequency 40 44 1 45 49 1 50 54 4 55 59 7 60 64 8 65 69 10 70 74 11 75...
- Q A standard deck of cards contains 52 cards One card is selected from the deck a Compute the probability of randomly selecting a club or diamond b Compute the probability...
- Q The table below shows the scores of a group of students on a 10 point quiz Test Score 3 st 4 5 56 7 8 9 10 Frequency 24 1...
- Q A survey of a group s web habits for the past month obtained the following information 46 visited Facebook 47 visited LinkedIn 35 visited Google 29 visited Facebook and LinkedIn...
- Q 4 different color dice are rolled and the numbers showing are recorded How many different outcomes are possible Your answer is
- Q The Venn diagram here shows the cardinality of each set Use this to find the probability of observing the given set A 5 C 6 7 2 14 8 9...
- Q A jar contains 5 red marbles numbered 1 to 5 and 10 blue marbles numbered 1 to 10 A marble is drawn at random from the jar Find the probability...
- Q In how many different ways can a police department arrange a lineup if each lineup contains 8 people
- Q In this question we will formulate a measure to quantify the level of association between the two categorical variables Such a measure is often used in a statistical test called...
- Q According to a recent census 18 of the people in the United States are of Hispanic origin One county supervisor believes her county has a different proportion of Hispanic people...
- Q Someone hands you a box of 17 chocolate covered candies telling you that 8 are vanilla creams and the rest are peanut butter You pick candies at random and discover...
- Q Some people are concerned that new tougher standards and high stakes tests adopte many states have driven up the high school dropout rate The National Center for Education Statistics reported...
- Q In a survey of 275 professional athletes it was found that 126 of them owned a convertible 124 of them owned a giant screen TV and 123 owned a sporting...
- Q For this question you will use A 316 The solution A is a constant function B is concave up and approaches the value of 651 C decreases and approaches z...
- Q The probability statement that a student does not complete the exam in 130 minutes was determined to be P x 130 The corresponding probability statement for the normal random variable...
- Q in a survey of 275 professional athletes it was found that 126 of them owned a convertible 124 of them owned a giant screen TV and 123 owned a sporting...
- Q 1 point Ten randomly selected people took an IQ test A and next day they took a very similar IQ test B Their scores are shown in the table below...
- Q a Provide a 90 confidence interval for the population mean Recall that a confidence interval is calculated using the sample mean and a margin of error The margin of error...
- Q A survey was conducted at a local ballroom dance studio asking students if they had ever competed in the following dance categories Smooth Rhythm Standard The results were then presented...
- Q Here is a sample data set 484 446 8 390 8 539 5 463 4 424 5 447 5 420 4 518 7 368 2 410 9 347 1 457...
- Q A girl has 8 skirts 9 blouses and 9 pairs of shoes How many different skirt blouse shoe outfits can she wear Assume that each item matches all the others...
- Q In the 6 51 lottery game a player picks six numbers from 1 to 51 How many different choices does the player have Your answer is
- Q Suppose a designer has a palette of 6 colors to work with and wants to design a flag with 3 vertical stripes all of different colors How many possible flags...
- Q A pianist plans to play 3 pieces at a recital In how many ways can she arrange these pieces in the program Your answer is
- Q How many ways can 8 candles be arranged on a shelf
- Q In how many ways can 3 students from a class of 15 be chosen for a field trip Your answer is
- Q You may need to use the appropriate appendix table or technology to answer this question A random sample of 81 credit sales in a department store showed an average sale...
- Q Let P U 0 28 and P V 0 28 and P V 0 47 Events U and V are mutually exclusive Find P U or V O 1 6785714285714...
- Q With a population of 3500 people we randomly sample 139 people without replacement Is it reasonable to assume that the trials are sampled independently O No because the sample size...
- Q The z value corresponding to a 0 80 cumulative probability was found to be 0 84 Thus the necessary return x will be 0 84 standard deviations above the mean...
- Q 76 The attention span of a two year old is exponentially distributed with a mean of about eight minutes Suppose we randomly survey 60 two year olds a In words...
- Q creating a test for the Zika virus The incidence of a Zika is low 5 percent in the general population There is a trial version but it sometimes misses the...
- Q 2 percent of a certain company s life insurance policy holders are smokers For each nonsmoker the probability of dying during the year is 0 015 For each smoker the...
- Q 90 The average length of a maternity stay in a U S hospital is said to be 2 4 days with a standard deviation of 0 9 days We randomly...
- Q than percents In a family with 5 children what is the probability of having 3 boys and then 2 girls in that order Exclude multiple births and assume all outcomes...
- Q 75 Salaries for entry level managers at a restaurant chain are normally distributed with a mean of 44 000 and a standard deviation of 6 500 We randomly survey 10...
- Q You own 15 CDs You want to randomly arrange 7 of them in a CD rack What is the probability that the ra ends up in alphabetical order The probability...
- Q The probability that a first year student entering a certain private college needs neither a developmental math course nor a developmental English is 52 while 36 require a developmental math...
- Q Find the value of 7C3 35 O24 0 210 O 5 040
- Q A pianist plans to play 4 pieces at a recital from her repertoire of 23 pieces How many different recital programs are possible
- Q A four person committee is to be selected from an organization s membership of 20 people How many different committees are possible
- Q A pianist plans to play 4 pieces at a recital In how many ways can she arrange these pieces in the program Your answer is
- Q Find the value of 7 P3 O 5 040 O 24 0 210 35
- Q Compute the value of
- Q A restaurant offers a choice of 6 salads 12 main courses and 7 desserts How many possible 3 course meals are there
- Q Standard automobile license plates in a country display 2 numbers followed by 3 letters followed by 2 numbers How many different standard plates are possible in this system Assume repetitions...
- Q A die is rolled twice What is the probability of showing a 1 on the first roll and an even number on the second roll Your answer is
- Q A survey of 138 persons was conducted at TCC and it was found that 10 persons carried a cell phone 97 persons carried a tablet computer and 7 carried both...
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