One large course has 900 students, broken down into section meetings with 30 students each. The section meetings are led by GSI’s. On the final, the class average is 64, and the SD is 20. However, in one section the average is only 55. The GSI argues that: “If you took 30 students at random from the class, there is a pretty good chance they would average below 55 on the final. That’s what happened to me, and my teaching was as good as the other GSI’s” Is this a good defense? Answer yes or no and justify your answer.

One large course has 900 students, broken down into section meetings with 30 students each. The section meetings are led by GSI’s. On the final, the class average is 64, and the SD is 20. However, in one section the average is only 55. The GSI argues that: “If you took 30 students at random from the class, there is a pretty good chance they would average below 55 on the final. That’s what happened to me, and my teaching was as good as the other GSI’s” Is this a good defense? Answer yes or no and justify your answer.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.5: Interpreting Data

Problem 1C

See similar textbooks

Related questions

Q: find the interquartile range b. quartile deviation

A: We have given that the marks scored by 10 students in Statistics test.

Q: For each item, identify if the type of sample is related or independent. 1. Prof. Antonio believes…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: survey organization takes a simple random sample of 625 households from a city of 80,000 households.…

A: Given that Sample size n =625 Sample mean =2.3 Population standard deviation =1.75

Q: What is the probability that on a particular day, the trading volume will be less than 2.5 billion?…

A: We have given that X~N( μ , ?2 ) μ = 5 , ? = 1.8 Z-score =( x - μ )/?

Q: A decade-old study found that the proportion, p, of high school seniors who believed that "getting…

Q: 4. The Department of the Treasury is interested in finding out what proportion of people support…

A: Note: According to Bartleby guidelines expert solve only one first question and rest can be…

Q: An investment website can tell what devices are used to access their site. The site managers wonder…

A: Givensample size(n)=359p=0.27

Q: Given what is already in the VENN diagram and the following: P(A) = 0.6 P(B | A) = 0.4…

A: We have given that P(A) = 0.6 P(B | A) = 0.4

Q: The mean of the distribution of grades for Exam 1 was 58 , while the median was 70. The distribution…

A: Given: Mean of distribution =58 and Median=70 then distribution is ? A. Left skewed B. Right…

Q: Suppose that 200 out of a random sample of 275 letters mailed in the United States were delivered…

Q: The data from a simple random sample with 25% observations was used to construct the plots given…

A: Given n=25 Correlation coefficient=0.931

Q: The manufacturer of a laser printer reports that the average number of pages a cartridge prints…

A: Given problems related to normal distribution. We have to solve both the problems.

Q: (b) Determine the type of test statistic to use. t Degrees of freedom: (c) Find the value of the…

A: For the given data u Perform t-Test: Two-Sample Assuming Equal Variances

Q: CN Official Cancun Airp.. C THE SWIICH M Word - Chaptel 2 The medical researcher is comparing two…

A: Given that

Q: Suppose we want to test the null hypothesis Ho : p = 0.34 against the alternative hypothesis H1 : p…

A: Solution-: Given:n=300,x=120,P0=0.34, α=0.05 Hypothesis: H0:p=P0=0.34 Vs H1:p>0.34 (Right…

Q: 32% of college students say they use credit cards because of the rewards program. You randomly…

Q: (a) Construct a 95% confidence interval for the mean increase in scores after the class. Let d…

A: Given: Before After 439 451 435 431 451 454 453 463 491 511 526 529 473 493 440…

Q: Expected Value: Work:

Q: ccording to a report done by S& J Power, the mean lifetime of the light bulbs it manufactures is 45…

A: Given that x̄ =44 , μ = 45 , ? = 7 , n = 90

Q: A company providing mobile phone service plans has a list of phone numbers for their 125,000…

Q: 4. The following sample of numbers is chosen from a normally distributed population. 22, 25, 28, 30,…

Q: A laboratory tested 60 compact fluorescent bulbs for mercury content and found that the mean amount…

A: Given that Sample size n =60 Sample mean =5.33 Standard deviation =1.1

Q: The table below lists the annual salaries (in dollars) for a sample of 12 high school math teachers…

A: Null Hypothesis: H0: The high school math teachers in Louisiana get paid is not more than those in…

Q: The following data represent the number of days absent per year in a population of six employees of…

A: We have given data are 1,3,5,6,7,10 As per given questions i have to solve population mean part only…

Q: Recent surveys have shown a decline in the percentage of U.S. households with cable TV. In one city,…

Q: (a) The standard deviation of y is (Type an integer or decimal rounded to the nearest hundredth as…

A: Let us consider the given data set is population.

Q: 3. A select life aged 40 purchases a 10-year endowment insurance with $100,000 sum insured. Premiums…

Q: On average, hotel guests who take elevators weigh about 160 pounds with an SD of about 40 pounds. An…

A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: 4. A recent study of 19 students of San Rafael College showed that the mean of the distance they…

Q: (a) In the clinical trial, patients are grouped into pairs according to certain criteria such as…

Q: 1. An independent researcher wishes to estimate the average amount of money a young professional…

A: (1) Given Sample mean x̄=500, n=sample size=30, sample standard deviations s=60 Note: According to…

Q: The population (in millions) and the violent crime rate (per 1000) were recorded for 10 metropolitan…

Q: QUESTION 9 Alfred, Bruce, and Selina each construct a confidence interval from the same sample.…

A: The question is based on the relationship between the confidence level and width of confidence int.…

Q: Suppose that you draw eight cards with replacement from a standard deck of 52 cards, adequately…

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, u, of…

Q: Determine if the test is left, right or two tailed, and the parameter that is being tested.

A: HERE use basic of hypothesis test

Q: You are administering a survey through schools to assess attitudes toward adopting healthy behaviors…

A: Systematic sampling selects a random starting point from the population, and then a sample is taken…

Q: What information can you get from a histogram that you can't get from just knowing the mean or…

Q: 3. A Gallup poll conducted in 2010 found that 494 of 1050 adult Americans believe it is the…

A: It is given that Sample size n = 1050 Number of adults support responsibility of government, X = 494…

Q: The test statistic is The p-value is Should the null hypothesis be rejected?

A: here from given information for gamer in age- group 16-25 x1¯ = 42.5 σ1 = 9.5 n1 = 351 for gamer…

Q: A mortgage broker is offering home mortgages at a rate of 9.5%, but the broker is fearful that this…

A: Given Information: Hypothesized value of population mean is 9.5% Sample size n=40 Sample mean…

Q: 11. Find the probability of the indicated event if P(E) = 0.20 and P(F) = 0.35. Find P(E and F) if…

A: Obtain the probability of P(E and F). The probability of P(E and F) is obtained below as follows:…

Q: Hi, Can you help me with this question? A survey of 600 non fatal accidents show that 261 involved…

A: We have given that, Favorable cases (X) = 261 and sample size (n) = 600 Then, We will find the…

Q: Given that P(A and B) = 0.20 and P(A|B) = 0.40, what must the P(B) = ? 0.1 0.2 0.4 0.5

Q: Test the claim that the proportion of men who own cats is significantly different than 60% at the…

A: The researcher claims that the proportion of men who own cats is significantly different than 60%.

Q: a. Find the population mean. b. Find the population standard deviation. c. How many possible samples…

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

Q: In a recent survey, it was found that the median income of families in country A was $58,000. What…

A: Let X denote the income of families in country A. Given that median of X is 58000

Q: A well-known brokerage firm executive claimed that 50% of investors are currently confident of…

Q: One bag contains 4 white balls and 2 black balls; another contains 3 white balls and 5 black. If one…

Q: A test is made of #o4= 41 population standard deviation is =49, Compute the value of the test…

A: Given: n=67 x¯=45σ=29

Question

One large course has 900 students, broken down into section meetings with 30
students each. The section meetings are led by GSI’s. On the final, the class
average is 64, and the SD is 20. However, in one section the average is only 55.
The GSI argues that:
“If you took 30 students at random from the class, there is a pretty good chance
they would average below 55 on the final. That’s what happened to me, and my
teaching was as good as the other GSI’s”
Is this a good defense? Answer yes or no and justify your answer.

Expert Solution