A teacher claims that a grammar seminar will help students reduce the number of grammatical errors they make when writing a 1000-word essay. The table shows the number of grammatical errors made by seven students before participating in the seminar and after participating in the seminar. Calculate the p-value of the test for the claim. Student               1     2     3     4    5    6    7 Errors (before)   15   10   11    5    5    4    9 Errors (after)      11     9     7    8    1    2    6   a .025   b .034   c .067   d .050

Q: A sample was taken of the salaries of 20 employees of a large company. The following is a boxplot of…

A: A boxplot shows the five-number summary of a set of data: Min, first quartile, median, third…

Q: been using Since grade school to check the math on this problem (+ mean multiplication) N= -…

A: given N=-12+6-7*4+9-2*3/7 here * mean multiplication using bodmas rule first simplify the bracket…

Q: ht of beauty pageant winners is 117 pounds. A study of 17 randomly selected beauty pageants resulted…

A: In this case, the claim is that the mean weight of beauty pageant winners is 117 pounds.

Q: Skilled (HS+) Mexican non-citizens 27-34 years of age who arrived prior to age 161 Key regressors…

A: Main  Effects and Interactions The experiments are tested using F-test and analyzed based on main…

Q: Alex and Boris are taking college preparatory exams. Alex writes ACT test, and scores 20 out of 35.…

A: The answer is attached below,

Q: Ellen takes the subway and bus to school for her Quantway class. She makes the follawing table of…

A: Given the data, 50, 60, 55, 55, 65

Q: 21. An online survey is used to monitor customer service. The survey consists of 14 questions. Ten…

A:

Q: Draw and fill out a Venn diagram to represent the results of the survey and fill in each section.

A:

Q: the mean prize of mid sized cars in a region $32000. a test is conducted to see if the claim is…

A: Statistical hypothesis testing implies that no test is ever 100% certain: that’s because we rely on…

Q: obabilistic expression P(-2.3<Z<1.1)? A. 0.854 B. 0.125 C. 0.146

A: Given:The two z-scores are -2.3 and 1.1 Observe z=-2.3 and z=1.1 in the standard normal table to…

Q: 4.2: Subtracting Integers using Chips Vocabulary and symbols – write out what the following mean:…

A: Zero pair: The pair which consist of one positive valued and one negative valued chip hence the…

Q: The table shows the results of a survey in which people who moved house were asked to give the main…

A: (a) Use Excel sheet following the procedure below to draw the pie chart of the given data. 1. Open…

Q: Whether a person washes their hands before leaving a public restroom   a. quantitative variable…

A: Solution The random variable in the question is whether person washes hands.

Q: If the mode of the scores 10, 12, 13, 15, 15, 13, 12, 10, x is 15, then what is the value of x?

A:

Q: In a study of treatments for very painful "cluster headaches, 147 patients were treated with oxygen…

A: HERE GIVEN  FOR PATIENT TREATED WITH OXYGEN SAMPLE SIZE =n1=147                          x1=113…

Q: What is the value of the probabilistic expression P(-1.9<Z<1.4)? A. 0.891 B. 0.948…

A: See the hand written solution

Q: Consider the following problem: Find two numbers whose sum is 23 and whose product is as large as…

A: Let x and y be two numbers. Given conditions are, x+y=23 and x*y should be maximum.

Q: 3.a.Explain the meaning of accuracy, precision, and bias along with examples. B.Name and explain 7…

A: Accuracy : Accuracy refers to the closeness of a measured value to a standard or known value. You…

Q: The analyst sets his/her desired P(Type l) error. True or False? O True O False

A: A Type I error is defined as the rejection of null hypothesis when it is true. It is also known as…

Q: Use the following results from a test for marijuana use, which is provided by a certain drug testing…

A: Introduction: A false positive result in this case is a result in which the test result is positive,…

Q: elow are sample research questions. Identify which T-test (Independent or Dependent) are you going…

A: Dependent T-test is used to compare the means of two related or dependent group. Independent T-test…

Q: a. Alex's z-score is b. Boris z -score is __ C. performed on exam better than

A:

Q: ✅❎♦️♦️✅❎♦️♦️❎

A: Given data:Subjects with positive test results: 145False positive results: 28Subjects with negative…

Q: Apol asked people in a certain country what they considered to be the most important problem in…

A: The test is to check whether there is an association between response to the question and race of…

Q: claim the mean weight of beauty pageant winners is 106 pounds of 18 randomly selected beauty…

A: The claim is that the mean weight of beauty pageant winners is 106 pounds.

Q: 20. Your grandmother listens to the radio every Sunday morning. Sometimes on K-Lite, sometimes on…

A: c. Both A and B are true

Q: A total of 2441 American adults Health in General Total 501 Poor responded to a survey about their…

A: Given : A total of 2441 American adults responded to a survey about their income class and their…

Q: SEE IMG mainpm.png     based on output select the words which best complete the following…

A: It was stated that the researcher have decided to create a new variable (age*gender) . The multiple…

Q: What is the arithmetic mean of 6, 8, 12,13,9,7,11 and 15?

A:

Q: For each of the following fitted trends, make a prediction for period t = 17:   (a) yt =…

A: Given information- We have given period, t = 17 We have to make predictions for fitted trends.

Q: The accompanying data were collected from a statistics class. The first row gives the variable, and…

A: The given data is from a statistics class. The objective is to identify the numbers 1 and 0 for the…

Q: 6. Jared received the following marks on his first five biology tests: 71, 82, 94, 65, and 79. What…

A: It is an important part of statistics . It is widely used . Mean is defined as the average .

Q: Are the following examples Quantitative or Qualitative/Categorical? -# of students in a class -a…

A: Here. We want to know given example is qualitative or qualitative.

Q: In a poll of 593 human resource professionals, 35.9% said that body piercings and tattoos were big…

A: The appropriate CI for the proportion that would describe the proportion of "professionals, who…

Q: 7. The accompanying table lists the numbers of words spoken in a day by each member of 56 different…

A: MaleFemale274811926715114265294298614026266189942695213866882315322232259882190502116224629149672197…

Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.