You are the operations manager for an airline and you`re considering a higher fair level for passengers in aisle seats. How many randomly selected passengers must you survey? Assume that you want to be 99% confident that the sample percentage is within 5.5 percentage points of the population percentage. Assume that nothing is known about the percentage of passengers who prefer aisle seats.  n=?

Q: You want to determine if the graduation rate of different than the known national graduation rate.…

A: The researcher is interested to determine if the graduation rate of high-school students is…

Q: You take a sample of the heights (in inches) of 12 professional basketball players. The data are:…

A: Given data: 79, 76, 77, 79, 81, 83, 79, 76, 78, 83, 87, 85.

Q: How many people took part in this survey? * The table shows data about what type of phones that…

A: To arrange the data of two categorical variables, two ways contingency table is used. The first row…

Q: Describe how to Convert a Sample Mean to z.

A: z-score denotes the standardized normal score.

Q: A thousand people were sampled and classified according to their smoking and alcohol consumption…

A: It is observed that the variables smoking and alcohol consumption status are categorical.

Q: ind the sample mean for the given data set, 25,64,38,76,48

A: Answer: From the given data, 25,64,38,76,48 Sample size(n) = 5

Q: With 79% of adults in a country believe there are aliens. You select 5 randomly. What is the average…

A:

Q: Please answer the questions in the photo and explain. Thank you

A: (a) Sample Mean = (2.2 +0.5 +2.4 +2.7 +2 +1.5 +0.2 +1.5 +0.1 +0.2)/10 = 1.33 (b) Here, we're…

Q: f) Let z be the value of the test statistic. Give the correct decision rule at a = 0.05 level of…

A: sample size, n = 120 30 learners reported that they smoke Proportion of learners who reported that…

Q: A statistics student was interested in prices for used Mustang cars being offered for sale online.…

A: 1) Following the stated instructions, the bootstrap dot-plot of the median will look like is as…

Q: The winning scores in the U.S. Masters golf tournament in the years from 1982 to 1991 were as…

A: Data given  284,280,277,282,279,285,281,283,278,277

Q: how does the sample and population relate?

A: Sample and population both are different items, but both are related with each other. Population is…

Q: A school principal surveys 4 freshman, 4 sophomores, 4 juniors, and 4 seniors. For the situation…

A: We have to find correct answer for given data....

Q: What is the name of this type of sample?

A: In the method of convenience sampling, the individual samples are easily determined and do not…

Q: Find the sample mean for the given data set, 45,34,67,89,24

A: Answer: From the given data, 45,34,67,89,24 Sample size(n) = 5

Q: Find the median of the sample 34, 29, 26, 37 and 31 is _________

A:

Q: A circus operator randomly picked 5 day from the month of august to see how many people purchased…

A: Sample is the items randomly drawn from the population.

Q: It can be said that a sample is representative of the population. What is meant by this?

A: It is given that the statement about to the sample.

Q: Explain the difference between an independent and dependent sample. Give an example of each.

A: Dependent samples:The two samples are said to be dependent if there exist an effect of one on…

Q: Before the furniture store began its ad campaign, it averaged 103 customers per day. The manager is…

A: a)   Determine the type of study used.   The type of study used is “t-test for a population mean”.…

Q: The test scores of 10 randomly selected students are listed below. Find the median. 30 35 43 44 47…

A:

Q: According to the American Psychological Association, married adults tend to be happier than single…

A: The descriptive analysis is conducted using EXCEL. The software procedure is given below: Enter the…

Q: Find the sample mean for the given data: 8,11,13,5,16,21,9,13,17,5,3,18,16,14,23

A: Answer: Given sample values are, 8,11,13,5,16,21,9,13,17,5,3,18,16,14,23 Sample size (n) = 15

Q: Enrique teaches five sections of Introductory Psychology. He wants to know whether or not the…

A:

Q: Find the mean of the given sample: 14, -14, 12, -9, 8, 17, -19, 20 4.625 4.815 3.625 3.815

A:

Q: What is Sample?

A:

Q: Distinguish briefly the Population and sample

A: Population : The population is a wider group of people, items, events, etc on the basis of which…

Q: According the April 12, 2017 Pew Research survey, 58% of Americans approve of U.S. missile strikes…

A: (3) Determine whether the normal approximation can be used with the given distribution or not?…

Q: Is the sample mean always the most frequently occurring value? If so, explain why. If not, give an…

A: No, Sample Mean is not the most frequent Occuring Value.   Mean= Sum of Observations / No.of…

Q: Explain why the sampling distribution of the sample proportion is assumed to be Normal. Show your…

A:

Q: Descriptive statistics is another way of drawing a conclusion which helps us determine whether the…

A: Descriptive statistics: Descriptive statistics is a part of statistics where the data is summarize…

Q: Find the sample mean of the following data: 11, 23, 27, 04, 32, 37, 38, 45, 40, 08

A: Answer: From the given data, 11, 23, 27, 04, 32, 37, 38, 45, 40, 08 Sample size(n) = 10

Q: 395 out of 500 women were in favor with the new brand of skin whitening. What is the point estimate…

A:

Q: According to a polling organization, 24% of adults in a large region consider themselves to be…

A: The hypothesized proportion is 0.24.

Q: I only have one attempt at this. I need help please.  Marc takes a random sample of 14 dogs from…

A: Given data is,9,25,32,40,41,45,47,50,53,53,62,79,94,106given data is already arranged in ascending…

Q: How can I find the sample mean of these four scores ? 1,4,4,10

A: Given data, 1,4,4,10 sample mean(x)=?

Q: you want to know how how arizonia workers age 16 or older travel to work. To estimate the percentage…

A: Individual:Collected data which can be associated with a single element in a sample is called…

Q: Looking at whether how much Disney+ a person watches (3 hours, 2 hours, or 1 hour a day) and what…

A: Here, the dependent variable is the overall happiness of a person watching Desney+ and the beverage…

Q: About 5% of the population own a Playstation. 400 people are randomly selected. Find the mean for…

A: Given, Probability = p = 0.05 Sample size = n =400 By using normal distribution mean we calculate…

Q: What sampling distribution will you use? binomial O Student's t O uniform

A: Total number (N)  = 1215 Number of ethnic groups(n) = 6 degree of freedom (df) = n-1  =6-1 =5…

Q: Explain Properties of the Sample Mean?

A: Mean: The arithmetic mean(also called the mean) is the most commonly used measure of central…

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.