Statistics question and answers for September 20, 2023
- Q The test statistic of z 0 83 is obtained when testing the claim that p 0 9 a Identify the hypothesis test as being two tailed left tailed or right...
- Q Express the confidence interval 0 333 p 0 555 in the form p E p E t
- Q the critical value Za 2 that corresponds to the given confidence level 85 Za 2 Round to two decimal places as needed
- Q K Suppose 233 subjects are treated with a drug that is used to treat pain and 52 of them developed nausea Use a 0 05 significance level to test the...
- Q Assume a significance level of 0 05 and use the given information to complete parts a and b below Original claim Less than 52 of adults would erase all of...
- Q Samples of DNA are collected and the four DNA bases of A G C and T are coded as 1 2 3 and 4 respectively The results are listed below...
- Q The test statistic of z 0 86 is obtained when testing the claim that p 0 5 Identify the hypothesis test as being two tailed left tailed or right tailed...
- Q Express the confidence interval 0 555 p 0 999 in the form p E 5 E t
- Q uppose IQ scores were obtained for 20 randomly selected sets of twins The 20 pairs of measurements yield 103 01 y 104 4 r 0 895 P value 0 000...
- Q K Listed below are the numbers of words spoken in a day by each member of eight different randomly selected Complete parts a and b below Male Female 16 262...
- Q A company has 6000 arrivals of Internet traffic over a period of 14 110 thousandths of a minute Let the random variable x represent the number of such Internet traffic...
- Q K Data from 14 cities were combined for a 20 year period and the total 280 city years included a total of 149 homicides After finding the mean number of...
- Q K A study was done using a treatment group and a placebo group The results are shown in the table Assume that the two samples are independent simple random samples...
- Q K Engineers want to design seats in commercial aircraft so that they are wide enough to fit 95 of all males Accommodating 100 of males would require very wide seats...
- Q The table below gives the age and bone density for five randomly selected women Using this data consider the equation of the regressi line y bo b x for predicting...
- Q Find the indicated critical value 20 09 Click to view page 1 of the table Click to view page 2 of the table 2009 Round to two decimal places as...
- Q This question 1 point s possible Find the area of the shaded region The graph depicts the standard normal distribution of bone density scores with mean 0 and standard deviation...
- Q F Determine whether the following value is a continuous random variable discrete random variable or not a random variable a The number of pigeons in a country b The last...
- Q K Determine whether the following value is a continuous random variable discrete random variable or not a random variable a The number of pigeons in a country b The last...
- Q Five males with an X linked genetic disorder have one child each The random variable x is the number of children among the five who inherit the X linked genetic...
- Q The normal quantile plot shown to the right represents duration times in seconds of eruptions of a certain geyser from the accompanying data set Examine the normal quantile plot and...
- Q Assume that the readings on the thermometers are normally distributed with a mean of 0 and standard deviation of 1 00 C A thermometer is randomly selected and tested Draw...
- Q The random variable x represents the number of phone calls an author receives in a day and it has a Poisson distribution with a mean of 6 8 calls What...
- Q K When women were finally allowed to become pilots of fighter jets engineers needed to redesign the ejection seats because they had been originally designed for men only The ejection...
- Q Find 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 K Assume that females have pulse rates that are normally distributed with a mean of 75 0 beats per minute and a standard deviation of a 12 5 beats per...
- Q For a data set of brain volumes cm and IQ scores of ten males the linear correlation coefficient is r 0 863 the linear correlation coefficient r and the critical...
- Q 7 kg Click the icon to view the radiation levels W The percentile corresponding to 0 75 is 0 kg Round to the nearest whole number as needed kg Radiation...
- Q K For a data set of brain volumes cm and IQ scores of ten males the linear correlation coefficient is r 0 863 Use the table available below to find...
- Q K Determine which of the four levels of measurement nominal ordinal interval ratio is most appropriate for the data below Course grades from A to F Choose the correct answer...
- Q K The following are the ratings of males by females in an experiment involving speed dating Use the given data to construct a boxplot and identify the 5 number summary...
- Q K Find the mean of the data summarized in the given frequency distribution Compare the computed mean to the actual mean of 52 8 degrees Low Temperature F 40 44...
- Q The frequency distribution below represents frequencies of actual low temperatures recorded during the course of a 31 day month Use the frequency distribution to construct a histogram Do the data...
- Q Identify the type of observational study cross sectional retrospective or prospective described below K A research company uses a device to record the viewing habits of about 15 000 households...
- Q K The data table to the right represents the volumes of a generic soda brand Complete parts a and b below a Which plot represents a dotplot of the data...
- Q Which of the following values cannot be probabilities 1 2 0 08 0 51 3 5 1 34 5 3 0 Select all the values that cannot be probabilities A...
- Q Frequency Distributions for Construct the frequency distribution Commute Time minutes K The accompanying data are 45 commute times to work in minutes for workers of age 16 or older in...
- Q K Find the a mean b median c mode and d midrange for the given sample data An experiment was conducted to determine whether a deficiency of carbon dioxide in...
- Q K Here are 6 celebrities with some of the highest net worths in millions of dollars in a recent year George Lucas 5500 Steven Spielberg 3700 Oprah Winfrey 3200 Michael...
- Q Points 0 5 of 1 The coefficient of variation for the systolic measurements is Type an integer or decimal rounded to one decimal place as needed Sav A sample of...
- Q K Construct one table that includes relative frequencies based on the frequency distributions shown below then compare the amounts of tar in nonfiltered and filtered cigarettes Do the cigarette filte...
- Q The accompanying data set lists the F scale intensities of recent tornadoes in the United States Construct a frequency distribution Do the intensities appear to have a normal distribution Assume...
- Q K Identify the lower class limits upper class limits class width class midpoints and class boundaries for the given frequency distribution Also identify the number of individuals included in the...
- Q K Researchers measured the data speeds for a particular smartphone carrier at 50 airports The highest speed measured was 77 4 Mbps The complete list of 50 data speeds has...
- Q The body temperatures of a group of healthy adults have a bell shaped distribution with a mean of 98 27 F and a standard deviation of 0 48 F Using...
- Q K Find the standard deviation s of sample data summarized in the frequency distribution table below by using the formula below where x represents the class midpoint f represents the...
- Q me of the biggest factors in determining the value of a home is the square footage The accompanying data represent the square footage and asking price in thousands of dollars...
- Q Based on a poll 20 of adults believe in reincarnation Assume that 4 adults are randomly selected and find the indicated probability Complete parts a through d below Hint this...
- Q Problem 11 Claim Less than 50 of adults would erase all of their personal information online if they could A software firm survey of 824 randomly selected adults showed that...
- Q The following is a frequency distribution of the number of red M M s found in 1 69oz bags loosely based on Hata obtained from a google search Number of...
- Q Fifty four wild bears were anesthetized and then their weights and chest sizes were measured and listed in a data set Results are shown in the accompanying display Is there...
- Q Find the indicated IQ score The graph to the right depicts IQ scores of adults and those scores are normally distributed with a mean of 100 and a standard deviation...
- Q Pulse rates of women are normally distributed with a mean of 77 5 beats per minute and a standard deviation of 11 6 beats per minute Answer the following questions...
- Q K Listed below are body temperatures from five different subjects measured at 8 AM and again at 12 AM Find the values of d and S In general what does...
- Q 1 Use the given information to find the number of degrees of freedom the critical values x2 and x and the confidence interval estimate of o It is reasonable to...
- Q Means of Travel Drive alone Carpool Public Transportation Walk Other means Work from home OA 0 68 OB 0 16 C 0 32 Frequency 153 22 D 0 84 10...
- Q 3 A Gallup survey of 2322 adults at least 18 years old in the U S found that 408 of them have donated blood in the past two years Construct...
- Q Find the sample standard deviation 14 15 16 17 18 C OA 1 6 OB 1 2 OC 2 5 c OD 1 3
- Q Find the P value for the indicated hypothesis test A medical school claims that more than 28 of its students plan to go into general practice It is found that...
- Q To investigate the relationship between yield of potatoes and level of fertilizer application a researcher divides a field into eight plots of equal size and applies differing amounts of fertilizer...
- Q The following is a sample of 19 November utility bills in dollars from a neighborhood What is the largest bill in the sample that would not be considered an outlier...
- Q The red blood cells counts of women are normally distributed with a mean of 4 577 and standard deviation 0 382 Find the probability that a randomly selected woman has...
- Q Provide an appropriate response The probability that an individual has 20 20 vision is 0 13 In a class of 16 students what is the probability of finding five people...
- Q The top 30 cities in Georgia as determined by population in 2019 are given below Using the random numbers table the second table select a random sample of four cities...
- Q Construct a 90 confidence interval for the population mean Assume the population has a normal distribution A sample of 15 randomly selected math majors has a grade point average of...
- Q Listen 4 Suppose a city s environmental engineers are studying the amount of lead in drinking water with an acceptable amount being 34 parts per million Analyses of drinking water...
- Q 2 A 2016 study gives the mean and standard deviation of a fish s length in centimeters for a variety of fish species For the northern pike the mean length...
- Q The repair costs for seven cars which were crashed by a safety testing program were as follows 130 140 230 240 350 400 and 140 Find the median cost OA...
- Q The number of hours 10 students spent studying for a test and their scores on that test are shown in the table Is there enough evidence to conclude that there...
- Q You interview a random sample of 50 adults The results of the survey show that 50 of the adults said they were more likely to buy a product when there...
- Q In a random sample of 24 people the mean commute time to work was 33 5 minutes and the standard deviation was 7 3 minutes Assume the population is normally...
- Q A security expert claims that more than 18 of all homeowners have a home security alarm State Ho and H in words and in symbols Then determine whether the hypothesis...
- Q use the given statement to represent a claim Write its complement and state which is Ho and which is Ha 2315 Find the complement of the claim H 315 Which...
- Q Construct a 95 confidence interval for the population proportion of adults who believe in UFOs A 95 confidence interval for the population proportion is Round to three decimal places as...
- Q Find the critical value to for the confidence level c 0 95 and sample size n 22 Click the icon to view the t distribution table t Round to the...
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