The Graduate Record Exams (GRE) quantitative section has a population mean of 152.6 and population standard deviation of 8.8. random sample of 48 individuals Mean GRE quantitative section of the sample to be 155. Assume we are conducting a two-tailed hypothesis test at an alpha = .05 level. Write the null hypothesis in symbols and words. Write the alternative hypothesis in symbols and words How do you calculate the test statistic. How do you compute the p-value using software Make a decision about the null using the critical value approach. Make a decision about the null using the p-value approach

Q: For each variable, determine whether it is best thought of as discrete or continuous. Variable (a)…

A: Discrete: A discrete variable takes on a finite or countable number of distinct values.Continuous: A…

Q: 39.9% of consumers believe that cash will be obsolete in the next 20 years. Assume that 7 consumers…

A: p( cash obsolete) = p = 0.399select n = 7 consumers.x = No. of cash obsolete

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A: If two variables X and Y had a Pearson Product Moment correlation of -0.547

Q: The ages of the members of a legislature from a particular state are listed below. Find the mean,…

A: First, arrange the data in ascending order: 35, 38, 43, 47, 47, 48, 54, 56, 66

Q: X 0 1 2 3 P(x) 0.25 0.05 0.2 0.5 Find the standard deviation of this probability distribution. Give…

A: Mean=E(X)=E(X2)=Variance()=E(X2)-(E(X))2Standard deviation()=

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A: Alabama43Alaska64Arizona42Arkansas46California40Coloroda31Connecticut26Delaware49Florida47Georgia37H…

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A: Here, the given data values (customer ages) are:-13 , 15 , 19 , 22 , 24 , 20 , 28 , 28 , 29 , 29 ,…

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A: A certain city has never had two consecutive sunny days. Every day classified as sunny, cloudy (but…

Q: 3. The data in Table 7.7 are collected in an experiment designed to investigate the impact of…

A: From the given information we have the data that are collected in an experiment designed to…

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A: Where, F = Female and M = Male

Q: normally distributed. An admissions director wants to estimate the mean age of all students enrolled…

A: We have given that margin of error (E) = 1.6.                           Standard Deviation() = 1.8…

Q: The price-to-earnings ratio for firms in a given industry is distributed according to a normal…

A: Given,The price-to-earnings ratio for firms in a given industry is distributed according to a normal…

Q: At a local restaurant, 18% of the customers order takeout. If 14% of the customers order takeout and…

A: P(order take out)=0.18, P(humburger|order take out)=14%=0.14

Q: Match the coefficient of determination to the scatter diagram. The scales on the x-axis and y-axis…

A: Coefficient of determination: The coefficient of determination R2, is used to measure the proportion…

Q: The accompanying table describes results from groups of 10 births from 10 different sets of parents.…

A: The data set is,Number of girls 00.00310.01320.03830.11540.20150.24560.20470.11680.04490.016100.005

Q: You select a card from the standard deck of cards. What is the probability that you will select a 5…

A:

Q: A bag of M&M's has 4 red, 6 green, 5 blue, and 2 yellow M&M's. What is the probability of randomly…

A: Number of RedM&M's =4Number of Green M&M's =6Number of Blue M&M's = 5Number of Yellow…

Q: international telephone Overseas phone cell The time it takes an operator to place an normally…

A: Mean = u= 55 seconds Standard deviation = o =  10 seconds

Q: If the number of mortgage applications declined by 9% to 1,625,385. What had been the previous…

A: The given data is as follows: to 1,625,385 number of mortgage applications.

Q: A student is working on a homework assignment with 5 questions. Each question on the assignment has…

A: Given,Total number of questions, n = 5Each question on the assignment has 3 possible choices. So…

Q: In a study, the data you collect is Number of traffic tickets. What is the level of measurement?.

A: In statistics, the level of measurement refers to the mathematical properties that the data…

Q: Use the Normal model N(1127,75) for the weights of steers. a) What weight represents the 59th…

A: Given that the distribution is normal           here                        the formula for z is…

Q: Giving a test to a group of students, the grades and gender are summarized be Male A B C 20 14 13…

A: ABCCMale20141347Female1011829Total30252176

Q: According to a recent survey, 22.8% of parents in the UAE ensure their children are buckled up…

A: The formula of the pdf of the binomial distribution is,The probability distribution is given…

Q: The average life expectancy of tires produced by Whitney Tire Company has been 40,000 miles.…

A: In this case, the average life expectancy of tires produced by the company has been 40,000 miles.

Q: Find the​ least-squares regression line treating square footage as the explanatory variable.   y =…

A: Table…

Q: Which of the following tables represents a valid discrete probability distribution? X P(X=x) X…

A: Probability may be defined as the ratio of favourable outcomes to the total outcomes. Properties:…

Q: What is the probability that a randomly selected high school students plays organized sports?

A: Given that,Sample size No. of students play organized sports

Q: The probability of obtaining specific outcomes in a Bernoulli process is described by the binominal…

A: The probability of obtaining specific outcomes in a Bernoulli process is described by the binominal…

Q: all-star list. -7, -2, -1, 3, 3, 8, 8, 8, 13, 14, 14, 14, 15, 19, 19, 21, 21, 23, 26, 28, 33, 34, 35…

A: See the below table for answers.xAscending…

Q: The Wall Street Journal regularly publishes an article entitled "The Count." In one article, The…

A: "Since you have posted a question with multiple subparts we will provide solutions only to the first…

Q: latch the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axes are…

A: The strength and direction of linear relationship between two variables is measured by correlation.…

Q: C.2. UMBRELLA: ABSENT-MINDED PROFESSOR ( An absent-minded professor has two umbrellas that she uses…

A: Given that an absent-minded professor has two umbrellas that she uses when commuting from home to…

Q: In a lottery held by local sportsclub, the chance of winning is 60%. Jussi buys 15 tickets and gives…

A: n = 5 (5 friends)p = 0.6 (probability of winning the lottery)

Q: Both data sets have a mean of 195. One has a standard deviation of 16, and the other has a standard…

A: Given the box plot of data sets A and B, we use the key: 15|8=158. And also given that both data…

Q: The probability that a person living in Manila owns an air-conditioner is 0.04. find the probability…

A: The probability distribution for the nth success on the xth trail is,Where  n is the number of…

Q: 1. The box-and-whisker plots summarize the hourly wages of employees at two different fitness clubs.…

A: The box-and-whisker plots summarize the hourly wages of employees at two different fitness…

Q: 5.1.7 An engineering statistics class has 40 students; 60% are electrical engineering majors, 10%…

A: The given data is as follows:60% are electrical engineering majors10% are industrial engineering…

Q: The data show the number of hours spent studying per day by a sample of 28 students. Use the…

A: Given Box plotcompare with We getMin=3Q1=2.5Q2=4Q3=7Max=12

Q: Construct a 95% confidence interval for the population proportion of adults who believe in UFOs. A…

A: It is given that Favourable cases, x = 730Sample size, n = 2290Confidence level = 95%

Q: The five-number summary of the passengers on a cruise ship is listed below. Min Q1 Median Q3 Max 1…

A: min = 1max = 80Q1 = 20Q2 = 29Q3 = 38Want to determine if there are any outlier.

Q: Consider the following events: A: X1, X2, distribution Xn are independent and come from a Rayleigh…

A: The Bayes factor is .The MLEs of the unknown parameters are  and .Also, given  and .

Q: The Wilson family was one of the first to come to the U.S. They had 8 children. Assuming that the…

A: sample size(n)=8Probability of a child being a girl is (p)=0.5Let "x" be that the Wilson family had…

Q: 2 Consider a decision problem having environmental states X = {x₁, x2, x3} with P(X = x₁) = 0.56 and…

A: Given a decision problem having environmental states  with  and  The survey information is available…

Q: nately) by placing a gauge over the crown and comparing the height of the liquic ottle against a…

A: Given Information:Consider the given data that shows the fill height of soft-drink beverages.

Q: In a Midwestern city, a growing number of persons pursuing a teaching profession are choosing paid…

A: Given that the group of eight candidates for three local teaching positions consisted of five…

Q: The percentage of complete passes is an important measure for a quarterback in the NFL. A particular…

A: The claim is defined below as follows: From the given information, the claim is to test if the…

Q: There is a system consisting of components. Each component functions with probability p = 0.9,…

A: Given a system consisting of components with each component functions with probability , independent…

Q: alla hamburger, determine the probability that a customer who orders takeout will order a hamburger.

A: P(customer order take out)=26% P(Hamburger | customer order take out)=6%

Q: A research hypothesizes that people will be more likely to believe a news article that supports…

A: The research hypothesizes that people will be more likely to believe a news article that supports…