Statistics question and answers for November 10, 2023
- Q Cost Cost Number 9 8 17 3 37 8 10 6 19 7 38 2 11 8 20 5 38 7 12 5 35 5 22 3 39 2 13...
- Q Proc A certain region is on average hit by 5 7 hurricanes a year Find the mean and variance of the random variable X representing the number of hurricanes per...
- Q QUESTION 1 2 POINTS Some researchers are doing a two mean pooled t test They have two samples with sizes n 17 and n2 21 The population standard deviations are...
- Q 075 Q50 Exam Scc 85 6 About 25 of the students scored 40 20 or more
- Q Here is the start of a 100 chart Without extending the chart determine which numbers should go in the shaded boxes Complete parts a and b a 79 HE
- Q D L C D g s 1 i 1 F a 1 D s s O d O C O b O a
- Q Use the figures below to answer parts a through c a How many rectangles are there in each of these figures Note that rectangles may measure 1 by 1 1...
- Q The following data set provides information on wholesale sales by establishments and by total sales Number of Establishments Total sales in billions Product sales as a of total sales 5378...
- Q Get an education A survey asked 32 145 people how much confidence they had in educational institutions The results were as follows Round your answers to four decimal places if...
- Q rectangle has an area of 84 cm Its length and width are whole num a What are the possibilities for the two numbers b Which possibility gives the smallest perimeter...
- Q Twenty adult males between the ages of 30 and 40 participated in a study to evaluate the effect of a specific health regimen involving diet and exercise on the blood...
- Q For each give a rule that describes the pattern for changing one number into the one beside it I 11 III Original 4 6 13 14 New 8 12 26...
- Q Suppose the times of delivery from an area distributor are normally distributed If the population standard deviation is 2 hours what minimum sample size is needed to be 90 confident...
- Q The total time measured in units of 100 hours that a teenager runs her hair dryer over a period of one year is a continuous random variable X that has...
- Q loh A survey asked 32 145 people how much confidence they had in educational institutions The results were as follows Round your answers to four decimal places if necessary Part...
- Q Use the price demand function below to answer parts A B and C p x 90 3x L OC 0 90 OD 0 25 B Complete the table Revenue Revenue...
- Q e United Nations stores data about direct use of solar thermal heat around the world The following data set gives the information for direct use of solar thermal heat consumption...
- Q A simple random sample of 85 is drawn from a normally distributed population and the mean is found to be 146 with standard deviation of 34 Which of the following...
- Q A school district has a standardized test that it uses to sort students into magnet schools where the test is on a 200 point scale The superintendent s office wants...
- Q Question The following data set provides infromation on acres harvested and planted by year and value in the US ASPARAGUS ACRES HARVESTED 21 700 23 800 24 500 25 300...
- Q The average adult gets 7 45 hours of sleep each night with a standard deviation of 0 65 hours A pharmaceutical company developing a sleep aid is researching how much...
- Q 121 456 20 000 133 451 73 989 58 359 107 065 88 164 125 222 88 663 78 838 If we remove this low valued outlier 114 900 has...
- Q how many ways can 5 oaks 2 pines and 3 maples be arranged along a property line if one does not distinguish among trees of the same kind he trees...
- Q The table below represents the probability density function for the random variable X Find the standard deviation of X Round the final answer to two decimal places Provide your answer...
- Q In a gambling game a woman is paid 2 if she draws a ten or a three and 54 if she draws a jack or a six from an ordinary...
- Q Suppose net gain in dollars of the departments for an industry per day are normally distributed and have a known population standard deviation of 325 dollars and an unknown population...
- Q 2 2 If X and Y are independent random variables with variances o 9 and oy 6 find the variance of the random variable Z 6X 2Y 3 Y 2...
- Q 3 Regression Consider following data X 3 6 20 14 Y 55 55 10 15 The estimated regression equation for these data is yha 68 3x 12 40 a Compute...
- Q Explain why a statistic like 4 out of 5 dentists choose a certain brand of toothpaste could be misleading
- Q Assume that the game playthrough times for a newly released puzzle game has a mean of 49 8 minutes and a standard deviation of 4 2 minutes A sample of...
- Q A town has 330 000 adults whose collected heights follow approximately the Normal distribution with mean 175 cm and standard deviation 10 cm The correct way to label this standard...
- Q 0 08 0 44 6 The figure above shows the probability density function for the random variable 2 The shaded area represents P 1 z 5 What is P 1...
- Q Figure 9 6 Price of Cernations 12 10 8 6 4 2 100 200 1 300 400 500 Domestic Supply Tariff World Price Domestic Demand 600 Quantity of Camations in...
- Q You flip a fair coin 16 times This binomial distribution can be approximated with a normal distribution N 8 2 where the mean u is 8 and the standard deviation...
- Q From a box containing 2 black balls and 3 green balls 3 balls are drawn in succession each ball being replaced in the box before the next draw is made...
- Q 5 Descriptive statistics for the closing stock prices of two companies for several trading periods are shown below Microsoft Inc Mean Standard Error Median Mode Sample Variance Count 4 04...
- Q Determine the critical value or values for a one mean z test at the 6 significance level if the hypothesis test is left tailed Ha Ho Select the correct answer...
- Q The North American Treaty Organiztion NATO estimated the 2016 defense budget of the United States as being 608 billion A military contractor thinks this estimate is incorrect and wants to...
- Q 1 A random variable X that assumes the values X X Xk is called a discrete uniform random variable if its probability mass function is f x K for all...
- Q An experiment involves tossing a pair of dice one green and one red and recording the numbers that come up If x equals the outcome on the green die and...
- Q For the following distribution of quiz scores if a score of X 4 or lower is a failing grade how many individuals failed the quiz X f 6 5 4...
- Q 60 points His teacher told him the mean score on the test was a 3 with a standard deviation of 6 What is Nick s z score O 1 83...
- Q 3 Z Z X X S when z 2 3 x 91 and s 14
- Q that the hours worked for a service representative have a mean of 54 with standard deviation 14 hours The normal distribution for the population is shown by the dotted black...
- Q Recently the bowling scores of a certain bowler were normally distributed with mean 201 and standard deviation 22 a Find the probability that a score is from 185 to 210...
- Q 24 Three spinners identical to the one shown below are spun simultaneously Select the following probability distribution that represents the number of spinners that land on orange O Green O...
- Q Exercise 6 15 Algo Find the following probabilities based on the standard normal variable Z You may find it useful to reference the z table Round your answers to 4...
- Q The following cumulative relative frequency table shows the amount of federal tax paid by a sample of 200 small businesses in a fiscal year Cumulative Tax Paid 15 000 to...
- Q The cost of spare parts per machine are normally distributed with a population standard deviation of 158 dollars and an unknown population mean If a random sample of 23 machines...
- Q Let W be a random variable giving the number of tails minus the number of heads in three tosses of a coin Assuming that a tail is one fifth as...
- Q A family of statisticians is trying to decide if they can afford for their child to play youth baseball The cost of joining a team is normally distributed with a...
- Q The probability density function for the random variable X is shown below Find P X 2 Select the correct answer below 01 0 0 1 10 O O 29 19...
- Q 2 is produced by burning fossil fuels such as oil and natural gas and has been connected to global warming The following table presents the average amounts in metric tons...
- Q Tuition K per year 80 U 70 60 50 40 30 20 10 0 Box and Whisker Plot of Top 25 US Business Schools Grouped by Region Which of the...
- Q Tuition SK per year 80 70 60 FE 50 40 30 20 10 0 Box and Whisker Plot of Top 25 US Business Schools Grouped by Region Which of the...
- Q The midterm and final exam grades for a statistics course are provided in the data set below Jaymes a student in the class scored 86 on both exams Treat the...
- Q Listed below are the highest amounts of net worth in millions of dollars of all celebrities What do the results tell us about the population of all celebrities Based on...
- Q Suppose a survey of adults and teens ages 12 17 in a certain country was conducted to determine the number of texts Number of Texts Adults Teens None 166 9...
- Q A researcher wanted to determine the number of televisions in households He conducts a survey of 40 randomly selected households and obtains the data in the accompanying table Complete parts...
- Q Next question Assume that the sample is a simple random sample obtained from a normally distributed population of flight delays at an airport Use the table below to find the...
- Q A teacher gave a pop quiz in class The quiz had a maximum score of 10 points The lowest score in the class was a 4 Draw a frequency ogive...
- Q 46 51 53 51 Assume a population of 46 51 53 and 59 Assume that samples of size n 2 are randomly selected with replacement from the population Listed below...
- Q William keeps track of the amount of time he works on homework each week and the number of problems he is able to solve The data are shown in the...
- Q QUESTION 47 Suppose you computed r 0 817 using n 13 data points Using the critical values table below determine if the value of r is significant or not df...
- Q QUESTION 50 2 POINTS Researchers are conducting a pooled left tailed two mean hypothesis test at a 1 significance level The two samples have sizes n 19 and n 14...
- Q The answer choices below represent different hypothesis tests for annual return of mutual funds Which of the listed below is a left tailed test Select all correct answers Select all...
- Q The data show the hourly earnings in dollars of a sample of 25 railroad equipment manufacturers Use technology to answer parts a and b 15 65 18 75 14 55...
- Q This problem asks you to draw the histogram for the following GFDT of test scores Score 40 44 45 49 50 54 On the graph below draw a histogram for...
- Q Compute the mean and standard deviation of the random variable with the given discrete probability distribution P x 6 0 17 2 0 07 2 0 24 4 0 28...
- Q Heights of the tallest buildings in LA through 2016 in feet 1099 1018 858 750 748 735 725 723 717 699 699 667 625 620 578 571 571 560 534...
- Q CHECK YOUR UNDERSTANDING CYU In the dialog box provided work the following problem Submit your work by inserting an image or uploading a single PDF file Percent of 16 Year...
- Q Another measure of central tendency is the trimmed mean It is computed by determining the mean of a data set after deleting the smallest and largest observed values Compute the...
- Q g UA ACO 20 16 12 8 4 C Tar 0 14 0 4 8 12 16 20 UB ACO 20 16 12 8 4 10 Tar 0 4 8...
- Q ne table below gives the number of elementary school children in 16 school stricts in a particular region a Construct a cumulative frequency distribution b Construct a cumulative relative frequency...
- Q Each of the following three data sets represents the IQ scores of a random sample of adults IQ scores are known to have a mean and median of 100 Full...
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