) Here are the scores of eight Math 21 students on their midterm exam and their final exam. Use the 0.05 level of significance to test the claim that Math 21 students improve their scores from the midterm exam to the final exam. Student 1 2 3 4 5 6 7 8 Midterm 74 66 80 75 90 78 71 88 Final 83 72 95 85 95 89 80 96

Q: for coaching also usually raise their scores. A random sample of students who took the SAT twice…

A: Given data: Gain x¯ s n Coached 29 59 427 Uncoached 21 52 2733

Q: 26 68 84 26 29 117 5 6 35 7 42 21 26 48 1 14 50 27 13 49 12 9 29 26 21 17 120 13 Make a…

A: Provided data is ; 26      68   84   3      26   29   2 117     5   14    6      7    21    48 50…

Q: Joseph is statistics instructor. He is interested in seeing if his fall class or spring class tends…

A: B. 0.0174

Q: The following are the scores of 30 college students on a statistics test. 75 80 96 65 79 71 87 69 81…

A: Given data: 75 52 80 96 65 79 71 87 93 95 69 72 81 61 76 86 79 68 50 92 83 84 77 64 71 87 72…

Q: Construct a stem and leaf display, given the following data from a sample of midterm exam scores in…

A: Given that The data are 54, 63, 91, 72, 95, 55, 56, 89, 78

Q: need help with part D

A: Sample sizes n1=594 ,n2=506Favorable cases x1=363 ,x2=325Significance level (α) = 0.01Now,p̂1 =…

Q: A running coach wants to know if participating in weekly running clubs significantly improves the…

A: Option a) is correct.

Q: The following are the cores of 23 students in a 50-item test. 26 28 32 45 38 47 36 35 30 40 29 50

A: Given that The data are cores of 23 students 26, 28, 32, 45, 38, 47, 36, 35, 30, 40, 29, 50, 43, 33,…

Q: For each of 25 students in a class, a teaching assistant is noting down the marks obtained by the…

A: Given data set is 11,47,18,42,34,13,11,37,23,46,13,19,48,16,31,39,48,43,50,10,10,49,37,25,29Ordered…

Q: Assess the given data as a student, if n=11 then what is the value of Q3 needed for interpreting a…

A: Givenn=1

Q: Sleep apnea is a disorder in which you have one or more pauses in breathing or shallow breaths while…

A: Given thatIn a cross sectional study of 340 adults who suffer from sleep anemia it was found that…

Q: I looked if the points scored per season is best indicator for wins in regular season. Points…

A: In this step, we note down all the information given in the question and prepare the background for…

Q: 20 high school Spanish teachers attended an intensive summer course designed to improve their…

A: Given that, X1 bar = 27.3 S1= 5.04 X2 bar= 28.75 S1 = 4.74 n1= n2= 20 Hypothesis,  Ho: The course…

Q: The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive…

A:

Q: . What is the probability that a student will neither do homework regularly nor will pass the ourse?…

A:

Q: The following are the scores of 30 college students on a statistics test. 75 80 96 79 71 69 81 61 86…

A: Given data…

Q: A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651 adults,…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Show your complete computation then answer what is being asked.

A: T test and correlation test

Q: Find the mode of the following: 1, 1, 3, 3, 3, 5, 5, 8, 9 O 1 O 3 O 5 O 8 O 9 Question 17 Find the…

A: Given data is,1, 1, 3, 3, 3, 5, 5, 8, 9

Q: A sales manager collected the following data on annual sales for new customer accounts and the…

A: The given regression equation is y^=71.43+7.77x,x¯=6.3,∑xi-x¯2=106.10 and s=8.0512.

Q: Hi can you answer only d) and e) please

A: The rank of the given scores are obtained in table below- Scores Rank 82 10 85 13 94 17…

Q: The data below represents the life expectancy for some African and Asian countries. Construct a…

A: We have given in the question:   The data of the  life  expectancy for some African and Asian…

Q: Determine if the study uses descriptive or inferential statistics: The average age of students in…

A:

Q: A sociologist is interested in the relation between ?, the number of job changes and ?, the annual…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The following are the scores of 30 college students on a statistics test. 75 52 80 96 65 79 71 87 69…

A: Given that  The data are 75 ,69 ,52 ,72 ,81 ,96 ,61 ,65 ,76 ,79 ,86 ,71 ,79 ,87 ,68 ,93 ,50 ,92 ,83…

Q: An educator want to determine whether early exposure to school affect IQ. He enlists the aid of…

A: We set up the, Null Hypothesis(H0):μx=μy , there is no diffrence between the mean IQ of children who…

Q: The Computer Anxiety Rating Scale (CARS) measures an individual's level of computer anxiety, on a…

A: Given information: The output of Analysis of variance is given.

Q: Make a conclusion based on the histogram (attached below)

A: We need to make interpretation based on given Histogram

Q: 3. The histogram below shows the number of CDs students own based on the survey. Which of the…

A: From the given histogram, we see          Number of students owning 1-4 CDs is more than the number…

Q: In Born together-Reared apart: the Landmark Minnesota twin study (2012), Nancy Segal discusses the…

A: Twins No Siblings Silblings 1 482 425 2 619 566 3 567 633 4 414 442 5 439 443 6 397 449…

Q: AA A11. The male population of U. P. is 250 lakhs. The number of literate males is 20 lakhs and the…

A:

Q: Imagine a professor wants to examine if there is a relationship between gender and performance on a…

A: The degree of freedom (df) for χ2 test statistic is, (r-1) (n-1). where r=number of rows…

Q: A car company wants to know the monthly sales made in ($000), based on the brand of vehicle. The…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A consumer testing service obtained the mileages (in miles per gallon) shown in the table on the…

A: Given that  We have to find that if the manager of car A wants to say his car is the best then he…

Q: The values listed below are waiting times (in minutes) of customers at two different banks. At Bank…

A:

Q: Do the collected data present sufficient evidence to indicate that the average number of cell phones…

A: Given: n=20 α=0.05 Number of cell phones sold 9 9 9 8 9 9 11 12 12 16 10…

Q: •.. 32 34 36 38 40 42 44 46 48 50 32 34 36 38 40 42 44 46 48 SO (a) Set I (b) Set II

A: From the given figure we interpret the variability.

Q: An educational psychologist presented a task to a sample of twenty five young children. The table…

A:

Q: The following are the scores of 30 college students on a statistics test. 75 80 96 65 79 71 87 69 81…

A: Given score of college students…

Q: (a) What were the ranges for the two classes? 10 a.m. 11 a.m. (b) Which class had the higher median…

A:

Q: to use the ppropriate technology to answer this question. Five typists were selected to test two…

A: State the hypotheses   Let Factor A denotes the type of keyboards. Let Factor B denotes the typists.…

Q: Example 7. In a batch of 25 students, 7 students failed in a test. The marks, of 18 students who…

A:

Q: 20 high school Spanish teachers attended an summer course to improve their listening skills.  They…

A: Suppose we want to test whether the two independent sample xi (i=1,2,...,n1) and yj (1,2,...,n2) of…