In 2003, Major League Baseball took steps to speed up the paly of baseball games in order to maintain fan interest. In a sample of 94 games in 2002, 37 finished in less than 3 hours. A similar survey in 2003 of 78 games found that 42 finished in less than 3 hours. When testing the hypothesis (at the 5% level of significance) a higher percentage of games finished in less than 3 hours in 2003, what is the test statistic? (please round your answer to 2 decimal places)

Q: In statistical comparisons, a p-value represents the likelihood that an observation was merely due…

A: This question is asking us to examine Table 1 in a research article and determine which…

Q: Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the…

A: The sample of teenagers time is 3.0, 4.25, 5.5, 3.5, 7.0, 6.3, 2.0, 4.5, 3.7, 3.6.

Q: A 2016 Pew Research poll found that 18% of cell phone owners use their phone for conducting…

A: It is given that the total number of cell phone uses are 18%, thus the population proportion is…

Q: Question :The time taken by employees at Grace Floral shop to put a bouquet together has a normal…

A: The objective of this question is two-fold. First, we need to find the probability that an employee…

Q: An assembly line inspector is interested in determining if there is an equal proportion of “Type-A”…

A: Explanation: 1. Since, The inspector is interested in determining if there is an equal proportion of…

Q: Any basketball fan knows that Shaquille O’Neal, one of the NBA’s most dominant centers of the last…

A: Here  Claim is that SHAQ Made improvement with his assistant coach AND proportion of free throw…

Q: If a researcher reports a t-statistic with degree of freedom 19, how many individual subjects…

A: Given: Degree of freedom = 19

Q: Due to the economy, are Americans staying in their first professional job longer? This was a…

A:

Q: An SMR over 100% ( i.e.,171 %) indicates that the "healthy worker effect" may be an issue in the…

A: Given::- An SMR over 100% (i.e., 171%) indicates that the "healthy worker effect" may be an issue in…

Q: In the US, 55% of all people have type O blood, 30% have type A blood, 10% have type B blood and 5%…

A: Determine the critical value   Follow the instruction to obtain the chi square critical value:…

Q: Do sports drinks help prevent cramps in endurance sports? At the end of a marathon, officials will…

A: Observational study: In observational study, the individuals of the study are observed by the…

Q: Any basketball fan knows that Shaquille O'Neal, one of the NBA's most dominant centers of the last…

A: Proportion z - test, compares the difference between population proportion (hypothesized value) and…

Q: years old. A linguist believes the average age children learn a second language is less than the age…

A:

Q: Suppose that in the exit poll from the state of Florida during the year 2000 presidential elections…

A: Given: x=407, n=765p=xn=407765=0.532 The null and alternative hypothesis is, H0:P=0.5Ha:P>0.5 The…

Q: Any basketball fan knows that Shaquille O'Neal, one of the NBA's most dominant centers of the last…

A: Given that  The overall made free throws percentage is 53.3% Random sample size (n) = 39 Free throws…

Q: en reported that 42.6 % of workers employed as purchasing managers are males. In a random sample of…

A: The sample proportion is calculated as: p^=xn=70200=0.35

Q: Twittering away The Pew Internet and American Life Project asked a random sample of 2253 U.S.…

A: Given Information: Sample size n=2253 Sample proportion p^=0.19

Q: Consider the following scenario: you want to investigate the relationship between the number of…

A: Here we want to see if there is a relationship between 'likes' on Facebook and 'number of friends'…

Q: According to a study conducted by a statistical organization, the proportion of people who are…

A: Quantitative variables can be counted or measured, i.e, in this case the results are in terms of…

Q: Labor Day was created by the U.S. labor movement over 100 years ago. It was subsequently adopted by…

A: Given : sample size = n = 1000 x = 650 p^ = xn   = 6501000   = 0.65

Q: I was interested in how many days a week people do laundry.  I asked 11 of my coworkers and friends…

A: Calculating sample mean and sample standard deviation of data:…

Q: In a study of brand recognition, 821 of the 849 subjects recognized the Campbell’s soup brand. Use…

A:

Q: Any basketball fan knows that Shaquille O’Neal, one of the NBA’s most dominant centers of the last…

A: From the provided information, Shaq made 26 of 39 free-throw attempts. Sample size (n) = 39 Sample…

Q: Any basketball fan knows that Shaquille OʻNeal, one of the NBA's most dominant centers of the last…

A: Solution: Given information: n= 39  Sample size  x = 26 success  p^=xn= 2639= 0.6667  Sample…

Q: In the US, 60% of all people have type O blood, 20% have type A blood, 15% have type B blood and 5%…

A: We are rejecting Ho, As P-value < 0.01

Q: Because of this, the psychologist who created the program believes the proportion, p, if all married…

A:

Q: Suppose we have the results of a Gallup survey (simple random sampling) which asks participants for…

A:

Q: help me fix a please !!

A: State the hypotheses. That is, the population proportion of the people who answered “Yes” is the…

Q: n the US, 60% of all people have type O blood, 20% have type A blood, 15% have type B blood and 5%…

A: State the hypotheses.   The original claim is, Obtain the degrees of freedom. The degree of…

Q: An exam consists of twenty multiple-choice questions. Each question has five different possible…

A: An exam consists of twenty multiple-choice questions. Sample size, n = 20  Each question has five…

Q: Any basketball fan knows that Shaquille O'Neal, one of the NBA's most dominant centers of the last…

A: The correct option is Reject the null.

Q: Four scenarios of statistical studies are given below. Decide which study uses a population…

A:

Q: The Bureau of Labor Statistics reports that the official unemployment rate for Black people was…

A: Variables are of different types. The correct classification of variables and the identification of…

Q: According to the GSS 2018 dataset, 51% of 218 college graduates reported being interested in…

A:

Q: A polling company conducted a hypothesis test to see if people are happy with the government, and…

A: Given : A polling company conducted a hypothesis test to see if people are happy with the…

Q: Public Agenda conducted a survey of 1379 parents and 1342 students in grades 6-12 regarding the…

A: Solution: Given information: n1= 1379   Sample size of parents n2= 1342   Sample size of students…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.