Statistics question and answers for December 18, 2023
- Q 1 10 pts We bought a pack of 10 lightbulbs from a garage sale and collect a random sample of 2 lightbulbs no replacement and count the number of lightbulbs...
- Q Here are several scatterplots The calculated correlations are 0 951 0 736 0 021 and 0 923 Which is which Match each scatterplot with its calculated correlation a b c...
- Q C This question 2 point s possible In 1978 a popular science magazine reported that a study of women in Australia indicated that having sons shortened the lifespans of mothers...
- Q An amusement park has opened a new roller coaster It is so popular that people are waiting for up to 3 hours for a 2 minute ride Concerned about how...
- Q For many people breakfast cereal is an important source of fiber in their diets Cereals also contain potassium a mineral shown to be associated with maintaining a healthy blood pressure...
- Q A humor piece published in a reputable medical journal notes that people can t tell for sure whether parachutes are safe and effective because there has never been a properly...
- Q in 1978 a popular science magazine reported that a study of women in Australia indicated that having sons shortened the lifespans of mothers by about 47 weeks per son but...
- Q In a study of streams in the Adirondack Mountains the following relationship was found between the water s pH and its hardness measured in grains Is it appropriate to summarize...
- Q Are fat and calories in fast food related Here are the fat and calorie data for several brands of burgers Analyze the association between fat content and calories using correlation...
- Q Which of the scatterplots to the right show a little or no association b a negative association c a linear association d a weak or moderately strong association e a...
- Q Is there an association between time of year and the nighttime temperature in North Dakota A researcher assigned the numbers 1 365 to the days January 1 December 31 and...
- Q 9 pts According to a study 67 of cars are some shade of grey white black grey or silver If we take a random sample of 25 cars find the...
- Q An analysis of the amount of fiber in grams and the potassium content in milligrams in servings of 77 breakfast cereals produced the regression model Potassium 35 24Fiber Explain what...
- Q Question 9 of 15 Suppose X is a binomial random variable with 10 trials and success probability 0 60 Find the mean of X Answer Previous Answer 6
- Q An experiment is to draw 1 card from a fair deck of playing cards a If you were to list the sample space how many equally likely outcomes would it...
- Q You roll two fair dice a If you were to list the sample space for this problem how many equally likely outcomes would there be b Find the probability of...
- Q Eyeglassomatic manufactures eyeglasses for different retailers They test to see how many defective lenses they made in a time period The folllowing table gives the type of defect and the...
- Q A fair coin is flipped three times a State the sample space List outcomes separated by commas Use notation like HTT to mean the first toss was heads the second...
- Q In the game of roulette there is a wheel with spaces marked 0 through 36 and a space marked 00 a Find the probability of winning if you pick the...
- Q The number of M Ms of each color that were found in a case with M Ms is given in the table below color Freq blue 286 brown green orange...
- Q An experiment is pulling a ball from an urn that contains 8 blue balls and 8 red balls a Find the probability of getting a blue ball Leave your answer...
- Q Rewrite this number in appropriate scientific notation 1 320 000 answer
- Q Rewrite this number in appropriate scientific notation 0 000141
- Q Write the number in scientific notation 0 081 Question Help Moccago in
- Q Write the number in scientific notation 74 000
- Q The world population is estimated to be about 7 600 000 000 people Which answer expresses this number in scientific notation 0 076 x 10 0 07 x 10 076...
- Q Which means the same as 5 1411 x 105 514110 O 5141 1 5141100 O 51411
- Q A star s color gives an indication of its temperature and age The chart shows seven types of stars and th lowest recorded temperature of each type Type A B...
- Q Which number below is written in scientific notation 044 2 x 105 00 442 106 04 42 x 107 4 42 x 100 08
- Q Write the decimal that means the same as 3 321 x 105
- Q A piece of paper has a thickness of 4 2 x 10 inch Which decimal is equivalent to 4 2 10 0 00042 0 042 00 42 0 0042
- Q The planet Mercury is approximately 36 000 000 miles from the sun Which is the distance written in scientific notation 03 6 106 36 x 107 36 x 106 03...
- Q Rewrite this number in standard decimal notation without the use of exponents or scientific notation 2 366 x 104 answer Answers may be entered with or without commas but answers...
- Q Convert the following two numbers to standard notation 2 9 10 3 9 x 10 Convert the following two numbers to scientific notation To enter 2 x 105 you d...
- Q Rewrite this number in appropriate scientific notation 328 000 answer
- Q Rewrite this number as a whole number or decimal 6 7 x 105 answer
- Q ewsletter publisher believes that 63 of their readers own a Rolls Royce A testing firm believes this is inaccurate and performs a test to dispute the publisher s m After...
- Q O STATISTICS Choosing a quadratic model and usin 2500 2000 The data points show an ocean trench s depth y in feet at a distance x from a marked buoy...
- Q A sample of 1100 computer chips revealed that 26 of the chips fail in the first 1000 hours of their use The company s promotional literature claimed that less than...
- Q ev The National Academy of Science reported that 32 of research in mathematics is published by US authors The mathematics chairperson of a prestigious university wishes to test the claim...
- Q rev The National Academy of Science reported that 32 of research in mathematics is published by US authors The mathematics chairperson of a prestigious university wishes to test the claim...
- Q N One study claimed that 88 of college students identify themselves as procrastinators A professor believes that the claim regarding college students is too high The professor conducts a simple...
- Q One study claimed that 88 of college students identify themselves as procrastinators A professor believes that the claim regarding college students is too high The professor conducts a simple random...
- Q Annie is concerned over a report that a woman over age 40 has a better chance of being killed by a terrorist than of getting married A study found that...
- Q A direct mail appeal for contributions from a university s alumni and supporters is considered to be too costly if less than 16 of the alumni and supporters provide monetary...
- Q A direct mail appeal for contributions from a university s alumni and supporters is considered to be too costly if less than 16 of the alumni and supporters provide monetary...
- Q Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep This condition results in lack of sleep and extreme fatigue during waking hours A...
- Q Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep This condition results in lack of sleep and extreme fatigue during waking hours A...
- Q Postpartum depression and anxiety PPD is a common medical condition affecting mothers and their families after the birth of a baby The CDC estimated that 15 of women who have...
- Q 1 How many outcomes are in the event B A Answer B
- Q Postpartum depression and anxiety PPD is a common medical condition affecting mothers and their families after the birth of a baby The CDC estimated that 15 of women who have...
- Q 7 From past experience it is known 90 of 1 year old children can distinguish their mother s voice from the voice of a similar sounding female A random sample...
- Q A publisher reports that 44 of their readers own a particular make of car A marketing executive wants to test the claim that the percentage is actually different from the...
- Q I 1 75 Multiple Choice 3 points each The expected number of 1 s or 2 s in 240 rolls of a six sided die is a 60 a 50...
- Q The National Academy of Science reported that 33 of research in mathematics is published by US authors The mathematics chairperson of a prestigious university wishes to test the claim that...
- Q 12 In a food processing and packaging plant there are on the average two packaging machine breakdowns per week Assume the weekly machine breakdowns follow a Poisson distribution 10 points...
- Q 1 75 6 Let x denote the number of cars sold at Hatton Ford during a given week and p x is the probability that x occurs Complete the table...
- Q D Find the probability that at most 4 children recognize their mother s voice 8 Consider an experiment with 25 trials where the probability of success on any trial is...
- Q 9 The number of telephone calls coming into a business s switchboard averages 4 calls per minute Let x be the number of calls received 10 points A This is...
- Q 11 From a group of 10 bank officers 3 are selected to be relocated and supervise new branch offices If two of the 10 officers are women and 8 are...
- Q The National Academy of Science reported that 33 of research in mathematics is published by US authors The mathematics chairperson of a prestigious university wishes to test the claim that...
- Q 13 A new surgical procedure is said to be successful 80 of the time Suppose the operation is performed five times and the results are assumed to be independent of...
- Q 10 Suppose that the probability that an adult in America will watch the upcoming World Series is 40 Each person is considered independent We are interested in the number of...
- Q performance of the sur BONUS A package of 6 light bulbs contains 2 defective bulbs If 3 bulbs are selected for use find the probability none are defective 4 points
- Q An environmentalist wishes to conduct a hypothesis test on the percentage of cars driven in the city that are hybrids Is it sufficient for him to use a simple random...
- Q One study claimed that 89 of college students identify themselves as procrastinators A professor believes that the claim regarding college students is too high The professor conducts a simple random...
- Q One study claimed that 89 of college students identify themselves as procrastinators A professor believes that the claim regarding college students is too high The professor conducts a simple random...
- Q 6 Assume each outcome in the sample space represented by the Venn diagram below is equally likely Find P AB A B Round your answer to the nearest hundredths Answer...
- Q The table shows the educational attainment of the population of a country ages 25 and over expressed in millions Find the probability that a randomly selected person aged 25 or...
- Q Question 7 of 15 7 Find the variance of the sample data set 3 4 6 5 2 Answer Previous Answer 2 5
- Q The game of Scrabble has 100 tiles The diagram shows the number of tiles for each letter and the letter s point value One tile is drawn from Scrabble s...
- Q The table shows the educational attainment of the population of a certain country ages 25 and over expressed in millions Find the probability that a randomly selected person aged 25...
- Q The table shows the distribution by age of a random sample of 2820 moviegoers ages 12 74 If one moviegoer is randomly selected from this population find the probability expressed...
- Q 8 46 A farmer uses a lot of fertilizer to grow his crops The farmer s manager thinks fertilizer products from distributor A contain more of the nitrogen that his...
- Q 40 A logistic function was used to model the number of people who catch a certain virus V based on age measured in t years The function v t 35...
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