Suppose that the number of Facebook friends users have is normally distributed with a mean of 135 and a standard deviation of about 49. Assume fourteen individuals are randomly chosen. Answer the following questions. Round all answers to 4 decimal places where possible. a. What is the distribution of ?- N( b. For the group of 14, find the probability that the average number of friends is more than 146. c. Find the third quartile for the average number of Facebook friends. Round to 2 decimal places. d. For part b), is the assumption that the distribution is normal necessary? O Yes No Question Help: Written Example Message instructor Submit Question Jump to Answer.

Q: The next 10 questions refer to the following scenario. The average student studies eight hours for a…

A:

Q: 5

A:

Q: We want to conduct a hypothesis test of the claim that the population mean daily profit of a…

A: Given that  Claim : The population mean daily profit of a convenience store is less than 572…

Q: Tictok D. Determine the values of the random variables in each of the following distributions. 1.…

A: Given some problems, we have to find the values of random variables and also find the probability in…

Q: 1. Previous evidence show that majority of the students are happy and contented with the…

A: The evidences show that majority of the students are happy and contented with the university's…

Q: (d) Test the hypothesis at the a = 0.10 level of significance with n = 375 students. Assume that the…

A: From the provided information, Sample size (n) = 375 Sample mean (x̄) = 528 Standard deviation (s) =…

Q: If you choose to work with a t-score, how many degrees of freedom would you have? 24 25 26 none of…

A: If we want to perform a t-test then, the degrees of freedom is given by, df = n -1

Q: Below are four data sets and descriptions, given as a list or a table. State which are categorical…

A: Qualitative data: The data which cannot be expressed as numerically is called qualitative data.…

Q: You are an Operations Manager for a local steel manufacturing company, and you are in the process of…

A: There are 3 independent samples which are 3 types of machines. We have to test whether that one of…

Q: Let E be the event where the sum of two rolled dice is divisible by 6. List the outcomes in E^c.

A: In question, Given that E be the event where the sum of two rolled dice is divisible by 6. Then…

Q: Determine the classes and recurrent and transient states of Markov chains having the following…

A:

Q: You know that a certain document is equally likely to be in any one of four different folders. Let…

A:

Q: Use n=6 and p=0.5 to complete parts​ (a) through​ (d) below Construct a binomial probability…

A:

Q: with parameter fµ. Q: Which of the following is true? s2 n = 1 = nx  = x

A: We have given that each of 150 newly manufactured item is examined and the number of scratches per…

Q: Suppose the following table was generated from sample data of 20 employees relating hourly wage to…

A: Let us define the dummy variable as follows: Degree = 1  ; For Yes              = 0  ; For No Given…

Q: Population variances values are unknown but we know that they are equal (o = 0;). Question: A taxi…

A: We have given that,  For brand A :- x̄1 = 36300, s1 = 5000 and n1 = 12 For brand B:- x̄2 = 38100, s2…

Q: What is the sample standard deviation of the following numbers? 8, 4, 1, 5, 9 Multiple Choice 3.21…

A: Introduction:  Sample Standard deviation: The standard deviation of the population describes how…

Q: P(0 < z< ) = 0.2995 a. %3D b. P(-1.1 < z < 0.8225 с. Р( <zS 2.18) = 0.7044

A: Given that  Z follows standard normal distribution  Note: According to bartleby experts question…

Q: A medical statistician wants to estimate the average weight loss of people who are on a new diet…

A: Solution: Given information: σ= 10  Population standard deviation E= 2 Margin of error C= 0.9=90%…

Q: A random sample of 25 students were asked to self-identify as "statistics-lovers" or…

A: Denote μ1, μ2 as the population mean number of students who “love” statistics and who “adore”…

Q: You'd like to test the null hypothesis that the means of the two samples (column A and column B) are…

A: The null hypothesis is: H0:µ1= µ2 The alternative hypothesis is: H1:µ1≠ µ2

Q: The following graph is a. rences Multiple Choice dot plot stem-and-leaf diagram box plot contingency…

A:

Q: A control system wasinstalled to regulate the weight of potato chips dumped into bagsin a packaging…

A: Here we use t-test to compare arithmetic mean as the sample size is small and population standard…

Q: 2. An independent research group is interested to show that the percentage of babies delivered…

A:

Q: The old Nokia 3310 battery lasts 31 hours on standby. Nokia produces a new Nokia that is advertised…

A: We have given the following statement about the Nokia battery  we have to find out this will be two…

Q: A random sample of 40 observations was used to estimate the mean SAT scores of applicants at a…

A: We have given that  for a sample of 40 99% confidence interval is (1690,1810)

Q: Discuss the use of p < 0.05 to make statistical decisions. Is this something we should be doing? Why…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…

Q: ) Consider we are interested in determining if the proportion of individuals with a nonhereditary…

A: We are given the hypothesis which needs to be followed:- Ho:p = 0.35HA:p&lt;0.35 Rejection region of…

Q: Compare the probabilities assuming a Poisson distribution to your answers in part a. Divide each…

A: This question based on poisson  probability distribution and frequency distribution of the data.…

Q: schizopherina , who stayed in the hospital the longest would score the lowest on a mental…

A: Given that ; X represent the Years of Hospitalization Y represents the Mental orienation.  By using…

Q: Construct a 90% confidence interval to estimate the population mean using the accompanying data.…

A: Given that  Sample mean (x¯) = 85 Population standard deviation (σ) = 20 Sample size (n) = 16…

Q: A report presented by this tutorial school 5 years ago indicated that the population mean score of…

A:

Q: What is the value of the y-intercept of the least-squares regression line for these data? Round your…

A: The given data is,  Temperature(x) Coffee sales 74.4 2014.3 74.8 1495.8 73.5 1690.8 56.6…

Q: A simple random sample of sizen=200 drivers with a valid driver's license is asked if they drive an…

A: Given data number of success , x= 103 sample size, n =200 population proportion,p= 0.50…

Q: Each of 150 newly manufactured items is examined and the number of scratches per item is recorded…

A:

Q: Determine the margin of error for a confidence interval to estimate the population proportion for…

A:

Q: (c) In a random sample of visitors to a famous touris American tourists and 312 of 500 foreign…

A: X1 = 252, n1 = 750 And  X2  = 312, n2 = 500 Then,  We will find the 96% confidence interval for the…

Q: ou are to roll a fair die n=108  times, each time observing the number of dots appearing on the top…

A: It is given that n=108.

Q: What is the absolute critical value at which you reject the null hypothesis? tcritical= 2.960 2.690…

A:

Q: ams/Height in Meters“) of a healthy 5-year old got liberated from the Islamic State, the World Foe…

A: Given, sample size (n) = 225 sample mean (x̄) = 14.5785  sample standard deviation (s) =  2.25…

Q: Find the value of y7. Round your answer to three decimal places. 7.7 %3D

A: We have given that  The degree of freedom, df = 7 Area of shaded region = 0.7

Q: Determine the margin of error for a confidence interval to estimate the population proportion for…

A:

Q: The following logarithmic table is given. n f(X)=log(X) 4.0 0.6020599913 1 4.5 0.6532125138 2 5.0…

A:

Q: Suppose you own a pizza restaurant and have been in prison for three years. You’ve just been…

A: The reviews received by a restaurant are directly proportional to the quality of service and food in…

Q: Find the test statistic, t, to test the hypothesis that μ1 = μ2. Two samples are randomly selected…

A:

Q: Let X1, X2,...,X3 denote a random sample from a population having meanu and variance o2. Which of…

A:

Q: Complete the table (Use 4 decimal places when applicable) b.  What is the cumulative relative…

A:

Q: Students estimated the length of one minute without reference to a watch or clock, and the times…

A: Given that  Sample size n =15 Population mean μ =60 Level of significance =0.01

Q: f n = 5 and p = 0.40, what is the probability that: (a) X = 4?                            (b) X ≤…

A: Let X be the random variable from binomial distribution with probability (p) = 0.40 and sample size…

Q: nds are due December 3: nnual interest rate, pay

A: It is given that brodie corporation acquired bonds with a par value of $600,000 for $628,800 on…