Statistics question and answers for November 23, 2023
- Q Some states now allow online gambling As a marketing manager for a casino you need to determine the percentage of adults in those states who gamble online How many adults...
- Q To determine her air quality Denise divides up her day into three parts morning afternoon and evening She then measures her air quality at 4 randomly selected times during each...
- Q In a poll of 518 human resource professionals 45 6 said that body piercings and tattoos were big personal grooming red flags Complete parts a through d below CHITE a...
- Q Express the confidence interval 0 555 p 0 777 in the form p E p E
- Q An article examined the graduate admissions process for evidence of gender bias The table shows the number of applicants accepted to each of four graduate programs Round to one decimal...
- Q 3 Consider the graph below MA 3 3 2 2 3 Give three different equations that represent the graph
- Q A recent study found that 39 of all Americans are in favor of congressional term limits Let x be the number of Americans who are in favor of congressional term...
- Q Which of the following values cannot be the probability of an event 01 06 0 73 Oo 01
- Q The given data represents a frequency distribution of the F scale intensities of recent tornadoes Use the frequency distribution to construct a frequency polygon Does the graph suggest that the...
- Q A study found that 30 of Americans do not have adequate retirement savings Determine the probability that at least 3 people out of a random sample of 8 Americans do...
- Q d the area of the shaded region The graph to the right depicts IQ scores of adults and those scores are normally distributed with a mean of 100 and a...
- Q The probability that a student at a particular college is a male is 0 43 The probability that a student at this college is a biology major is 0 16...
- Q The probability that a student is dual enrolled is 0 16 Suppose two students are chosen at random Determine the probability that the first student selected is dual enrolled and...
- Q A recent campus poll found that 30 of all students at IRSC are history majors Determine the probability that 10 or 15 students out of a random sample of 21...
- Q A recent poll found that 36 of all registered voters in Okeechobee County support a proposed new property tax Determine the probability that all people out of a random sample...
- Q The total number of possible outcomes for 4 rolls of a eight sided die is O 512 O 32 O 4096 O24
- Q The sum of the probabilities of all simple events of any experiment must always equal 00 OF Oo
- Q Use the data below to determine the logarithmic regression for the value of a retirement account over 50 years Then estimate the value of the retirement account on the 60th...
- Q In a group of 136 students 116 are freshmen If one student is selected at random the probability that this student is not a freshman is O 0 147 O...
- Q Question 4 Studies show that 18 of all credit card holders eventually become delinquent Determine the probabilit that exactly 5 people out of a random sample of 16 people will...
- Q If a six sided die is rolled once the probability of obtaining a number greater than 1 is O 0 54 O 0 83 O 0 92 0 09
- Q The intersection of two events A and B is composed of the outcomes that are O common to both A and B O either in A or B but not...
- Q Question 3 In an upcoming national swim competition 11 swimmers will be competing How many different ways can 2 swimmers finish the competition first and second 09 0110
- Q Which of the following statements is true for the probability distribution of a discrete random variable 00 P z 1 o P z 1 OP z 1 OP x 0
- Q A random sample of 863 births in a state included 422 boys Construct a 95 confidence interval estimate of the proportion of boys in all births It is believed that...
- Q In classical probability O probability is assigned to an outcome using personal beliefs feelings and judgements all simple events are equally likely O all events are conditional O probability is...
- Q chere to view a t distribution table chere to view page 1 of the standard normal distribution table there to view page 2 of the standard normal distribution table is...
- Q In the video we just saw we performed logarithmic regression for the height of a tree in feet over time and found our model equation to be y 2 062...
- Q Determine the total area under the standard normal curve for parts a through c below For each be sure to draw a standard normal curve and shade the area that...
- Q The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0 C at the freezing point of water Tests on a large sample of these thermometers...
- Q Which of the following are criteria for a binomial probability experiment Select all that apply A There are two mutually exclusive outcomes success or failure B The experiment is performed...
- Q According to a study conducted in one city 35 of adults in the city have credit card debts of more than 2000 A simple random sample of n 150 adults...
- Q 14 If 7 of the thermometers are rejected because they have readings that are too low but all other thermometers are acceptable find the temperature that separates the rejected thermometers...
- Q What are the values of and o for the sampling distribution of the sample mean shown OA H 490 o 30 OB H 490 90 OC H 490 o 60...
- Q What is a random variable Choose the correct answer below OA A random variable is a numerical measure having either a finite or countable number of values of the ou...
- Q Find the indicated probability 23 The diameters of bolts produced by a certain machine are normally distributed with a mean of 0 30 inches and a standard deviation of 0...
- Q Find the indicated value 15 20 005
- Q According to government data the probability that an adult was never in a museum is 15 In a random survey of 10 adults what is the probability that two or...
- Q Fill in the blank to complete the statement The notation za is the z score that the area under the standard normal curve to the right of zo is The...
- Q The graph to the right is the uniform density function for a friend who is x minutes late Find the probability that the friend is at least 23 minutes late...
- Q Determine P and o from the given parameters of the population and sample size 74 o 36 n 81
- Q MODEL EXAMPLE https youtu be tQ2uuurC5RM 1 Suppose that 65 of the population gets a flu vaccine If 30 of those who were not vaccinated get the flu and 10...
- Q Suppose x is a uniform random variable with values ranging from 30 to 60 Find the probability that a randomly selected observation exceeds 42 0000 0 6 0 1 0...
- Q Determine the logarithmic regression of the data below using either a calculator or spreadsheet program Then estimate he y value when the value is 50 Round your answer to the...
- Q Solve the problem Round to the nearest tenth unless indicated otherwise 19 In one region the September energy consumption levels for single family homes are found to be normally distributed...
- Q 10 The probability that z lies between 0 and 3 01 P 0 Z 3 01
- Q If z is a standard normal variable find the probability 9 The probability that z is less than 1 13 P z 1 13
- Q 17 Find the area of the shaded region The graph depicts IQ scores of adults and those scores are normally distributed with a mean of 100 and a standard deviation...
- Q 35 A rare and deadly disease has a disease rate of 0 1 A screening test of the disease called DT is good in the sense that the accuracy of...
- Q 18 Find the indicated IQ score The graph depicts IQ scores of adults and those scores are normally distributed with a mean of 100 and a standard deviation of 15...
- Q B 15 There are 100 male birds and 300 female birds in birdhouse A and 300 males and 100 females in
- Q Provide an appropriate response 16 Which of the following is true about the distribution of IQ scores b The S D 15 a The mean 1
- Q Describe the sampling distribution of p Round to three decimal places when necessary N 25 000 n 550 p 0 7 OA Approximately normal Hp 0 7 p 0 092...
- Q Which of the following are properties of the normal curve Select all that apply A The area under the normal curve to the right of the mean is 1 B...
- Q Complete the sentence below denoted p is given by the formula where x is the number of individuals with a specified characteristic in a sample of n individuals The The...
- Q Describe the sampling distribution of p Assume the size of the population is 20 000 n 500 p 0 394 Describe the shape of the sampling distribution of p Choose...
- Q Fill in the blank According to the law of large numbers as more observations are added to the sample the difference between the sample mean and the population mean O...
- Q ect the correct choice that completes the sentence below
- Q mean 0 and standard deviation 1 7 Shaded area is 0 9599 8 Shaded area is 0 0694 2 z Z with
- Q Which of the following are properties of a probability density function pdf Select all that apply A The total area under the graph of the equation over all possible values...
- Q The probability that an individual has 20 20 vision is 0 14 In a class of 32 students what is the probability of finding five people with 20 20 vision...
- Q Using the following uniform density curve answer the question P x 125 1 What is the probability that the random variable has a value less than 2 5 2 What...
- Q 5 Find the area of the shaded region The graph depicts the standard normal distribution with mean 0 and standard deviation 1 6 3 39 2 26 1 13 1...
- Q Use the discrete probability distribution below to find the probability that x equals 4 4 7 9 0 18 0 03 x P x 3 0 15 O 0 61...
- Q Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds and is spread evenly over the range of possibilities so...
- Q Suppose your city has a large hospital and a small hospital each performing major and minor surgeries You collect data to see how many surgical patients have their discharges delayed...
- Q ANSWER Write the word or phrase that best completes each statement or answers the question Find the indicated probability Round to three decimal places 18 A test consists of 10...
- Q Solve the problem 24 According to a college survey 22 of all students work full time Find the standard deviation for the number of students who work full time in...
- Q 0 183 0 311 0 264 0 150 and 0 064 respectively MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the question Find the mean...
- Q 7 A police department reports that the probabilities that 0 1 2 and 3 burglaries will be reported in a given day are 0 53 0 43 0 03 and...
- Q Consider a set of data in which the sample mean is 33 7 and the sample standard deviation is 7 2 Calculate the z score given that x 30 2...
- Q A Assume you are doing some research What question would you like to ask your peers at IRSC Describe how you will collect your data and describe what a sampling...
- Q 2 2 2 4 Quiz Population Genetics Number of students 18 16 14 12 10 8 6 4 2 0 Heights of Male Students 158 165 166 173 174 181...
- Q According to the American Time Use Survey Americans age 15 and over spend an average of 2 69 hours each day watching television Assume the distribution of all such amounts...
- Q Suppose that 43 of voters in St Lucie county support a proposed zoning ordinance Consider the sampling distribution of the sample proportion of supporters with sample size n 125 Determine...
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