Statistics question and answers for November 19, 2023
- Q The observation of a data set with the greatest frequency is the O standard deviation O mean O median O mode
- Q Data were collected regarding the size weight of native bird eggs for a sample collected in Okeechobe County The weight of each bird egg was recorded in grams The data...
- Q The Empirical Rule can only be applied to distributions that are Oright skewed O bell shaped normal O symmetric sikered
- Q An observation is a O sample observed from the population O graph observed for a data set Otable prepared for a data set O value of a variable for a...
- Q A distribution curve that is right skewed has O a longer tail on the right side O a longer tail on the left side O both tails of the same...
- Q A fact or numerical measure that is calculated using sample data is called a O mean O empirical measure O parameter O statistic
- Q Which of the following is a quantitative variable O gender O time spent playing video games O city of residence O favorite type of video game
- Q Which of the following is not a measure of center O median O coefficient of variation O mode O mean
- Q A continuous variable is a variable can assume O any value over one or more intervals O whole numbers only O discrete values only O categorical values only
- Q on sampling error is CEIP O the difference between a sample survey result and the corresponding census resul O chance error O error that occurs in the collection recording or...
- Q For which measure of center must the data be ranked O range O mean O median O mode
- Q Suppose the maximum and minimum values are removed from a data set The value of the median O will increase O remains unchanged O will be equal to the mean...
- Q The value of the first quartile for a data set is 32 This means that O 25 of the values in the data set are smaller than 32 O 32...
- Q nich of the following characteristics does a box and whisker plot not show O center of the data O mode of the data O skew of the data O spread...
- Q The standard deviation is always measured in O the square root units of the original data O positive numbers greater than zero O the original data units squared O the...
- Q The standard deviation of a data set is O calculated by squaring the variance O always larger than the variance O never negative O always smaller than the variance 15
- Q Question 10 of 10 10 Given the observed table below calculate the expected frequency of individuals classified into category 3 of both variables when conducting a test of homogeneity Category...
- Q Choose the correct answer below OA A small x test statistic leads us to conclude that there is not a good fit with the assumed distribution OB The test statistic...
- Q K Winning team data were collected for teams in different sports with the results given in the accompanying table Use a 0 05 significance level to test the claim that...
- Q Which of the following is NOT true Choose the correct answer below O A When testing for equality of three population means do not use multiple hypothesis tests with two...
- Q 3 The sign test is a nonparametric test used to compare two population medians True OFalse Continue Reset answer
- Q Question 5 of 5 5 Given the observed table below calculate the chi square test statistic when conducting a test of homogeneity Category 1 2 3 1 12 Answer 10...
- Q Question 2 of 10 2 A random sample of 50 individuals are classified into one of six categories If it is believed that the proportion of individuals that would be...
- Q 1 Arandom sample of individuals from a large population are categorized by two variables If the first variable has four different categories and the second variable has five different categories...
- Q Question 2 of 5 2 A random sample of 400 individuals from a large population are categorized by two variables gender and smoking 220 of the 400 individuals are male...
- Q Question 4 of S 4 Given the observed table below calculate the expected frequency of individuals classified in category 3 of both variables when conducting a test of homogeneity Category...
- Q Using Pivot Tables find the mean and standard deviation of sales by region in the data provided Click the icon to view the data Complete the table below Type integers...
- Q 9 6 pts Find the six trigonometric functions of 8 if the given point 8 15 is on the terminal side of 0 In other words the point is the...
- Q 5 points Extra Credit A Bernoulli random variable X is a random variable that takes valu with probability and value 0 with probability 1 p Compute the expected value of...
- Q 5 points The average daily high temperature in June in a city is 79 F with a stand eviation of 7 F Suppose that the temperatures in June closely follow...
- Q 20 points Emma decides to play a game where she rolls two dice Below is a table displaying all of the possible combinations of rolling two dice Note that the...
- Q quality control expert at LIFE batteries wants to test their new batteries The design engineer claims they have a variance of 8464 with a mean life of 886 minutes f...
- Q 20 points Let C and D be independent events with P C 0 35 P D 0 55 a 6 points What is P Cn D b 4 points Are...
- Q A case control or retrospective study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a...
- Q A poll was conducted to investigate opinions about global warming The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then...
- Q A certain statistics Instructor participates in triathlons The accompanying table lists times in minutes and seconds he recorded while riding a bicycle for five laps through each mile of a...
- Q Control or retrospective study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash Results...
- Q Randomly selected birth records were obtained and categorized as listed in the table to the right Use a 0 01 significance level to test the reasonable claim that births occur...
- Q displayed results and use a 0 05 significance level What do you conclude Click the loon to view the date and two way analysis of variance results If appropriate determine...
- Q View the data and two way analysis of variance results If appropriate test for an effect from the row factor Choose the correct answer below OA Ho Left handed people...
- Q In a study of high school students at least 16 years of age researchers obtained survey results summarized in the accompanying table Use a 0 05 significance level to test...
- Q Click the loon to view the data and two way analysis of variance results First test for an interaction between the two OA Ho Distances between pupils are n H...
- Q A data set includes the counts of chocolate chips from three different types of Chips Ahoy cookies The accompanying StatCrunch display shows results from analysis of variance used with those...
- Q First test for an interaction between the two factors Determine the null and alternative hypotheses Choose the correct answer below OA Ho Distances between pupils are not affected by handedness...
- Q The data shown below represent the age in weeks at which babies first crawl based on a survey of 12 mothers Complete parts a through c below 52 30 44...
- Q 2 A statistics student observed 80 random numbers generated from a computer of which eighteen were twos If it is believed that the expected proportion of twos generated is 0...
- Q 6 Assume that cans of Coke are filled so that the actual amounts have a mean of 12 00 oz and a standard deviation of 0 14 oz a Find...
- Q 9 If the mean in a population is 98 6 what is the value of P 95 1 98 3 Augina
- Q 8 Many studies have been conducted to test the effects of marijuana use on mental abilities In one such study groups of light and heavy users of marijuana in college...
- Q 3 Select the answer using one of the four options presented below During one recent year U S consumers redeemed 6 52 billion manufacturers coupons and saved themselves 2 16...
- Q 5 The width of a confidence interval for a population mean of Venture Capital Investments is 20 billion dollars a Determine the margin of error b If the sample mean...
- Q 2 A survey was conducted to determine how people feel about the quality of sports programming available on television Respondents were asked to rate the overall quality from 0 no...
- Q 7 Farmers have discovered that the more domestic chickens peck at objects placed in their environment the healthier and more productive the chickens seem to be White string has been...
- Q 1 Circle your answer using one of the three options presented below and draw a sketch of a Pareto plot for these data Chart of PARTY O
- Q 4 A financial service has 500 clients enrolled and the upper management wants to know whether the service it provides to affluent clients differs from the service it provides to...
- Q 4 Given the observed table below calculate the expected frequency of category 4 if each category is hypothesized to be equally likely Category 1 2 3 4 5 Frequency 10...
- Q 1 A random sample of individuals from a large population are categorized into 8 categories If a chi square goodness of fit test is conducted to test the observed frequency...
- Q the weights lb and highway fuel consumption amounts mi gal of the 48 cars listed in the accompanying data set one gets this regression equation y 58 9 0 00749x...
- Q Sketch a direction field for dy 2t y Use the direction field to sketch a solution curve for the initia condition y 0 1 dx
- Q A single die is rolled one time Find the probability of rolling a number at most 4 or a prime number 4 6 02 6 3 6 05 6
- Q The life expectancy at birth of a person born in year x is approximated by the function f x 14 5 12 3 In x where x 0 corresponds to...
- Q he following data sets represent simple random samples from a population whose mean is 100 omplete parts a through e below ata Set I 06 ata Set II 06 4...
- Q In a clinical trial of a drug intended to help people stop smoking 133 subjects were treated with the drug for 12 weeks and 15 subjects experienced abdominal pain If...
- Q Question 1 of 14 1 Use the sample data set 7 2 9 5 10 3 11 6 13 5 to calculate x x y y Answer Continue Reset answer
- Q The weights of the chocolate in Hershey Kisses are normally distributed with a mean of 4 5338 g and a standard deviation of 0 1039 g a For the bell...
- Q In a random sample of 34 criminals convicted of a certain crime it was determined that the mean length of sentencing was 53 months with a standard deviation of 5...
- Q A simple random sample of size n 350 individuals who are currently employed is asked if they work at home at least once per week the 350 employed individuals surveyed...
- Q In a poll 51 of the people polled answered yes to the question Are you in favor of the death penalty for a person convicted of murder The margin of...
- Q 14 Use the following information to calculate MSE x 8 64 x 6 42 x3 7 82 n 14 n 16 n 18 s 4 4 s 3 6 s...
- Q For 100 births P exactly 58 girls 0 0223 and P 58 or more girls 0 067 Is 58 girls in 100 births a significantly high number of girls Which...
- Q 13 Use the following information to calculate MST x 5 5 x 4 4 X3 6 2 n 14 n 14 n3 16 s 4 2 s 3 8 s...
- Q Calculate the correlation coefficient for the relationship of interval variables X and Y in DATA SET A Make sure you show all of your work and demonstrate the use of...
- Q Is 0 627 a strong linear correlation Why or why not
- Q What percent of a standard normal distribution N 0 a 1 is found in each region Be sure to draw a graph Round your answers to the nearest whole number...
- Q Is the random variable given in the accompanying table discrete or continuous Explain The random variable given in the accompanying table is Number of Girls x P x 0 0...
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