3. An urn contains exactly 10 red chips and 6 blue chips. Five chips are randomly selected without replacement. Let X denote the number of blue chips in the sample of five chips. (a) What type of random variable is X? Indicate both the type and the appropriate parameters using the "~" notation. Write down the pmf of X, and do not forget to indicate the range of values that x can take on. X ~ X= - px(x) (b) What is the probability that there are between two and four blue chips among the five chosen chips? Express your answer as a decimal.
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Given:
An urn contains 10 red chips and 6 blue chips.
5 chips are randomly selected without replacement.
X denotes the number of blue chips in the sample of five chips.
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- Q1: As a project for his statistics class in Spring 2001, Ahmed was supposed to take a random sample of 30 cars in the student parking lot and determine the make and year of each car. (a) Ahmed used a random-number table to get a random sample of 30 cars in the parking lot. Suppose the lot is full and there are 950 parking places. Describe how he sampled the 30 cars. (b) After getting his random sample, Ahmed found that eight cars were Chaverolets, seven were Fords, five were Toyotas, three were BMWS, three were Hondas, three were Oldsmobiles, and one was a Cadillac. Make a table for these data, and draw a bar graph. Draw a circle graph showing the percentage of the total number of cars samples (c) The model years for each of the 30 cars are shown here: 96 99 95 97 86 92 96 97 89 92 83 92 99 87 89 90 90 97 93 88 93 95 84 95 76 96 88 99 95 93 Make a frequency table, histogram, and a frequency polygon for these data (use five classes). Describe the shape of the histogram. (d) Consider…Consider the population of four juvenile condors. Their weights in pounds are : 5, 6, 8, 13In a driver-side "star" scoring system for crash-testing new cars each crash-tested car is given a rating ranging from one star to five stars; the more stars in the rating, the better is the level of crash protection in a head-on collision. A summary of the driver-side star ratings for the 98 cars is reproduced in the tablė. Assume that 1 of the 98 cars is selected at random, and let x equal the number of stars in the car's driver- side star rating. Find p E(x) for this distribution and interpret the result practically. Click the icon to view the table. --.. - Find u = E(x). (Round to four decimal places as needed.) More Info DRIVSTAR Count Percent 2 5.10 16 16.33 56 57.14 21 21.43 N = 98 Print Done
- Assume that the conditions for inference are satisfied. Which of the following is the 98% confidence interval for the difference in runtimes (runtime in Java - runtime in Python). As a reminder, the mean of the differences in runtimes was 6.44 seconds, and the standard deviation of the differences in runtimes was 7.64 seconds. O 2.225 to 10.655 seconds 2.561 to 10.318 seconds O 2.778 to 10.102 secónds 3.016 to 9.864 secondsnumber with "1" as the leading digit is about 0.303. Now suppose you are the auditor for a very large corporation. The revenue file contains millions of numbers in a large computer data bank. You draw a random sample of n = 225 numbers from this file and r = 86 have a first nonzero digit of 1. Let p represent the population proportion of all numbers in the computer file that have a leading digit of 1.Test the claim that p is more than 0.303. Use ? = 0.10. (a) What is the level of significance?State the null hypothesis H0 and the alternate hypothesis H1 . H0 : p H1 : p (b) What sampling distribution will you use? The Student's tThe standard normal since np and nq What is the value of the sample test statistic? (Round your answer to two decimal places.)(c) Find the P-value of the test statistic. (Round your answer to four decimal places.)Sketch the sampling distribution and show the area corresponding to the P-value.…Q1: As a project for his statistics class in Spring 2001, Ahmed was supposed to take a random sample of 30 cars in the student parking lot and determine the make and year of each car. (a) Ahmed used a random-number table to get a random sample of 30 cars in the parking lot. Suppose the lot is full and there are 950 parking places. Describe how he sampled the 30 cars. (b) After getting his random sample, Ahmed found that eight cars were Chaverolets, seven were Fords, five were Toyotas, three were BMWS, three were Hondas, three were Oldsmobiles, and one was a Cadillac. Make a table for these data, and draw a bar graph. Draw a circle graph showing the percentage of the total number of cars samples (c) The model years for each of the 30 cars are shown here: 96 9 9 95 97 86 92 96 97 89 92 83 92 99 87 89 90 90 97 93 88 93 95 84 95 76 96 88 99 95 93 Make a frequency table, histogram, and a frequency polygon for these data (use five classes). Describe the shape of the histogram. (d) Consider…
- Five statistics students (n=5) are compared to a sample of 8 sociology students with regard to the number of hour they sleep. Here is the data for hours slept for the statistics students:8, 6, 5, 13, 10Here is the data for 8 sociology students (n=8).7, 4, 7, 8, 10, 12, 9, 6Conduct a t-test to determine if the statistics students sleep a different amount than the sample of sociology students? Be sure to address all four steps of the hypothesis test.Home - myRCC mylearning.suny.edu/d21/le/content/920969/viewContent/25846500/View Giving a test to a group of students, the grades and genders are summarized below. A Male 15 Female 4 B 13 Total 19 18 5 2 Question Help: Video W B.2 HW-23FA STATISTICS (81 x Submit Question с 3 8 2 If one student is chosen at random, 10 find the probability that the student was female OR received a grade of "A". (Leave answer to four decimal places.) Total 20 36 E 11 47 $ 4 R % 5 E 6 25 Y & 7 8 1Help please.. i got wrong explanation 2 times.. help with right answer
- n 11 of 17 > The Centers for Disease Control and Prevention (CDC) estimated the percent of individuals in each state who are classified as overweight or obese in different years. They calculated the estimates separately for three different age classes, including children (2-4 years old), adolescents (students in grades 9-12), and adults (aged 18 years and older). The boxplots and five-number summaries apply to the data sets of two different age classes. Match the appropriate descriptions to the data sets. Answer Bank the distribution is skewed to the left 33 34 35 36 37 38 39 25% of values are less than 11.25 Adults who were overweight in 2013 (%) the distribution is close to symmetrical Min Q1 Median 03 Max 25% of the values are more than 13.50 33.40 34.70 35.40 36.58 38.60 25% of values are less than 34.70 the distribution is skewed to the right 25% of the values are more than 18.00 6. 10 12 14 16 18 20 25% of the values are less than 6.40 Adolescents who were obese in 2013 (%) 25%…Consider the population of four juvenile condors. Their weights in pounds are : 4, 5, 9, 11The following table was generated from the sample data of 10 college students regarding the number of parking tickets the student receives in a semester, the student's age, and the student's GPA. The dependent variable is the student's GPA, the first independent variable (x1) is the number of parking tickets, and the second independent variable (x2) is the student's age. Coefficients Standard Error t-Stat Intercept -1.474701 2.638547 p-value -0.558906 0.596453 Number of Parking Tickets Student's Age 0.278749 0.184913 0.068429 0.135926 4.073572 0.006549 1.360394 0.222592 Step 1 of 2: Write the multiple regression equation for the computer output given. Round your answers to three decimal places. Answer How to enter your answer (opens in new window) ŷ = + x1 + x2 Copy Data Tables Keypad Keyboard Shortcuts