8. The Scholastic Aptitude Test (SAT) consists of three parts: critical reading, mathematics, and writing. Each part of the test is scored on a point scale with a median of approximately 500 (The World Almanac, 2009). Scores for each part of the test can be assumed to be symmetric. Use the following data to test the hypothesis that the population median score for the students taking the writing portion of the SAT is 500: Writing Score 502 447 701 405 590 439 453 514 635 337 447 471 387 464 476 Using alpha=0.05, what is your conclusion?

Q: 58% of students entering four-year colleges receive a degree within six years. Is this percent…

A: Given that, 58% of students entering four-year colleges receive a degree within six years.  187 of…

Q: Donna is looking into investing a portion of her recent bonus into the stock market. While…

A:

Q: Assume that a set of test scores is normally distributed with a mean of 110 and a standard deviation…

A: Given  Mean = μ=110, standard deviations σ=10

Q: the mean price of coffee is different in their neighborhood. A sample of 10 coffee prices from other…

A: Data given 3.8,3.05,2.35,4.15,3.45,2.35,2.3,3.8,2.45,2.2

Q: Boxes of cereal are labeled as containing 14 ounces. Following are the weights, in ounces, of a…

A: Given data: 14.02, 13.97, 14.11, 14.12, 14.10, 14.02, 14.15, 13.97, 14.05, 14.04, 14.11, 14.12

Q: Assume that the standard deviation of monthly rents paid by students in a particular town is $40. A…

A: The sample size n is 100 and the standard deviation is 40.

Q: A Gallup poll asked 18 teenagers aged 13 to 17, "Typically, how many hours per week do you spend…

A: Given information Sample size (n) = 18 Sample mean x̅ = 30 hours Standard deviation (s) = 9…

Q: The Statistical Abstract of the United States published by the U.S. Census Bureau reports that the…

A:

Q: Descriptive Statistics: Cans Mean Variable Cans Drink Coke Classic New Coke Pepsi 102.8 64.8 73.0…

A:

Q: The mean of the values 2, 3, 4, 6, 9, 10, rounded appropriately, is: 8.67 Ob 8.666666667 087…

A: Data given 2,3,4,6,9,10 n=6

Q: Consider the following data for an independent variable X and a dependent variable Y. 12.1 2.9 11.9…

A:

Q: 2. Stationary Distributions Recall that a stationary distribution of a Markov chain is a probability…

A:

Q: andom sample of 245 adults was collected and it was found that 172 still had their wisdom teeth.…

A:

Q: A population of values has a normal distribution with μ = 159.6 and σ = 39.4. You intend to draw a…

A: given data  μ = 159.6σ = 39.4n = 48

Q: If a researcher reports a one-sample t-test with df = 24, how many individuals participated in this…

A:

Q: Karen is playing a board game in which she rolls a fair six-sided number cube repeatedly until she…

A:

Q: A survey collects demographic, socioeconomic, dietary, and health-related information on an annual…

A: Note- Giving solution for part C only.   Given information- We have given the data of a sample of 20…

Q: Salaries of 33 college graduates who took a statistics course in college have a mean, x, of $64,700.…

A: The sample size is 33, sample mean is 64700 and population standard deviation is 12913.

Q: What would the null and alternative hypotheses be, as well as the test statistic?

A: Given that a .For sample size =400  And number of ads use =142  b .For sample size =500    And…

Q: A normal distribution has a mean of 33 and a standard deviation of 6. Find the probability that a…

A: It is given that  Mean, μ = 33 Standard deviation, σ = 6 Z-Score, Z = ( X - μ )/σ

Q: at are the degrees of freedom for the t-test statistic for testing if the means of two populations…

A: We know that for two sample t-test, degree of freedom = n1 + n2 -1,  where n1 is the sample size of…

Q: (b) Develop a quadratic trend equation. (Round your numerical values to four decimal places.) T=…

A:

Q: How to find the variance of a set of numbers

A: Variance:- The amount of data values spread from the mean is known as variance.

Q: A certain slope at a ski resort records the time it takes for skiers to ski the entire trail. It…

A:

Q: (a) Are these data discrete or continuous? Explain. O A. The data are discrete because it was…

A: It is given that the data represents the number of customers waiting for a table at 6:00 PM for 40…

Q: What's wrong? Each of the following statements contains a blunder. Explain in each case what is…

A: a). The correlation is used when there is a cause and effect relationship between two variables but…

Q: The random variable x represents the number of boys in a family of three children. Assuming that…

A: Answer; - Given a probability distribution                 x P(x) x*P(x) x^2*P(x) 0 0.125 0 0…

Q: Three potential employees took an aptitude test. Each person took a different version of the test.…

A: given data  norma x1 = 84.5   μ1 = 67.5    σ1 = 10rebecca x2 = 306.5   μ2 = 293    σ2 = 27morgan x3…

Q: For the following conjecture, state the null and alternative hypotheses. The average experience (in…

A: given data,according to given datahere we have to find out the null and alternative hypothesis

Q: b. What is the probability that 45 or more people from this sample are concerned about the digital…

A: It is given that Proportion, p = 28% = 0.28 Sample size, n = 210

Q: Find the variance of the binomial distribution for which n=800 and p=0.93. Round the answer to the…

A: Answer: -Here the random variable X has binomial distribution  With parameter   n = 800, p = 0.93…

Q: Do male and female servers work the same number of hours? A sample of 24 female servers worked an…

A: The sample size for females is 24, mean is 40 and standard deviation is 4. The sample size for males…

Q: A study of life expectancy showed that a random sample of 6 states had a standard deviation of 0.7…

A: Given n=6, s=0.7

Q: ou are the manager of a firm that sells a leading brand of alkaline batteries. Click on the link…

A: The literal interpretation of the estimated coefficient in the log-linear model is that a one unit…

Q: Imagine we KNOW that a treatment actually does have an effect but the researcher concludes there is…

A: Type I error: Rejecting null hypothesis when it is true is called Type I error. The probability of…

Q: of

A: Given, let 'X' be the number of patients having relief within a few minutes out of 12 patients.…

Q: The data below gives the mean price (in cents) of a litre of regular gasoline at self-service…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Q: 6. A deli sells 640 sandwiches each day when the price is $8.00. A market survey determines that for…

A:

Q: atıl NW 6.12 CORPORATE SUSTAINABILITY OF CPA FIRMS. Corporate sustainability refers to business…

A: The question is about confidence interval From given printout : Sample mean ( x¯ ) = 67.75504 Std.…

Q: If n=23, x=40, and s=5, find the margin of error at a 80% confidence level using the critical value…

A: Here, x=40, s=5, n=23, and CL=0.80. The value of α is, α=1-CL  =1-0.80  =0.20

Q: A normal distribution has a mean of 30 and a standard deviation of 4. Find the probability that a…

A: GivenMean(μ)=30standard deviation(σ)=4

Q: at is the probability that none of them watch reality TV shows? What is the probability that at…

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

Q: QUESTION 11 Which one of the following does NOT affect confidence interval width? O Sample Standard…

A: According to the given information in this question We need to identify the correct option

Q: An opaque bag contains 28 yellow marbles and 11 teal marbles. If two marbles are randomly chosen…

A: given data,28-yellow marbles 11-teal marbles 39- total marbles  here two marbles are randomly chosen…

Q: Find P(Z > 1.6) where Z is the standard normal random variable. Round to 4 decimal places. Answer:

A: given data  standard normal distribution  Z~N(0,1) P(Z≥1.6) = ?

Q: A pharmaceutical company operates retail pharmacies in 10 eastern states. Recently, the company's…

A: Given, mean is 14.87 and standard deviation is 5. Sample is 516. We will use one sample t confidence…

Q: Part 1 of 3: In a survey of 345 randomly selected gun owners, it was found that 52 of them said they…

A: It is given that a survey of 345 randomly selected gun owners, it was found that 52 of them said…

Q: A city's mean minimum daily temperature in February is 27°F. Suppose the standard deviation of the…

A: Mean = 27  X= 32  Standard deviation = 6

Q: 1 P = 0.28 Za/2=2.321 m = 0.03 What sample size is needed. 2 12 = 0.28(1-0.28) (²2.326) 0.03

A: Given that  p^ = 0.28 , Zα/2 = 2.326 , m = 0.03

Q: A)For n=56​, p=0.5​, and X=30, use the binomial probability formula to find​ P(X).     B)Can the…

A: It is given that  X follows Binomial(n = 56, p = 0.5), then the probability function  P(X = x) =…