Statistics Question

Q: In a recent survey,80% of the community favored building a health center in their neighborhood. Igno...

A: Obtain the standard deviation of the numbers favorite the health center.   The standard deviation of...

Q: Let A and B be any two events defined on S. suppose that p(A)=0.2, p(B)=0.7, and p(A and B)=0.3, the...

A: It is given that, p(A) =0.2 p(B) =0.7 and p(A and B) =0.3  

Q: . (25 points) Participants from a day-long conference choose from 2 lunch specials: Sirloin tips $10...

A: Given: X\Y 10    20    25 5 0.3 0.2 0.1 10 0.2 0.1 0.1   Now, calculate the row and colu...

Q: What is the range of this data set? range = What is the standard deviation of this data set? (Rememb...

A: a) Data(X) 81.3 107.9 98.8 87.3 115.7 95.4 115.7 77.7 115.7 94.4

Q: How can I provide a x and y data/graph for the following???

A: As here, we have two variables; one is dependent (volume) and another one is independent(temperature...

Q: A wholesaler in apples claims that 4% of the apples supplied by him are good. A random sample of 500...

A: Sample size=n=500 and number of bad apples=x=32. 4% of the apples were good and 96% are bad. Then th...

Q: Compute the the SS (sum of squared deviation)  for Jumping Jacks. Round your answer the nearest 2 de...

A: Let's first write the available data in a required form. Subjects Jumping Jacks (xi) Albert  2 ...

Q: Where are the critical region(s) located in a z-distribution if a two-tailed hypothesis test was con...

A: It is given that, alpha =0.0892 and Test is two-tailed hypothesis.  

Q: Assume that X has a normal distribution with mean u= 15.2 and the standard deviation is o= 0.9., fin...

A: Given: μ=15.2, σ=0.9 The corresponding z-value needed to be computed are: Thus,        

Q: A corporation that maintains a large fleet of company cars for the use of its sales staff is interes...

A: Sample size (n) =10 Here sample data is given hence we use T Test to find confidence interval Degree...

Q: 0             5           1             0     5      7     7           2             3     4      9 ...

A: Given, The stem and leaf are 05,10,15,17,17,23,24,29,34,39.

Q: please explain and show work

A: Coefficient of determination is one of the parameter to judge the regression model. It tells the per...

Q: Consider an M/M/1 queuing system with mean inter arrival time of 6 minutes. The average service time...

A:

Q: Solve Q(9) Answers are given also

A: Given: N = 6 Consider 1989 as base year. Commodity A B C D E F Price in 1989 (Rs.) 40 60 20 50 ...

Q: For the binomial experiments in Problem find the probability of 5 successes in 10 trials if p = 0.4.

A: Given: Number of success (r)=5 Number of trials (n)= 10 Probability of success (p)=0.4

Q: For the data shown to the right, determine the linear coffe sing ule 210 a. Use the definition r= Sy...

A: x y x-xbar y-ybar (x-xbar) (y-ybar)   3 5 0.8 3.2 2.56   5 6 2.8 4.2 11.76   2 1 -0.2 -0.8 0.1...

Q: The annual income of residents in a county is $42,000, with a standard deviation of $10,000. (b) Wha...

A: Normal probability is a type of continuous probability distribution that can take random values on t...

Q: Scores of an IQ test have a​ bell-shaped distribution with a mean of 100 and a standard deviation of...

A: (a) Obtain the percentage of people has an IQ score between 74 and 126. The percentage of people has...

Q: This table that give the probability of the number of cars that a family owns. Which mathematical ex...

A: The given table is: Number of cars Probability 0 0.10 1 0.20 2 0.40 3 0.30

Q: Assume a member is selected at random from the population represented by the graph. Find the probabi...

A: Given information: X is a random member selected at random from the population. X is normally distri...

Q: ​If, in a​ one-tail hypothesis test where H0 is only rejected in the upper​ tail, the ​p-value=0.204...

A: Given, In a​ one-tail hypothesis H0 is only rejected in the upper​ tail  ​p-value=0.2047 ZSTAT=+0.82...

Q: Using the z table (The Standard Normal Distribution Table), find the critical value (or values) for ...

A: Given information: Two tailed test α=0.11 Determine the value for α2 and 1-α2 .  α2=0.112=0.0551-α2=...

Q: Please re-do this question again, it request to write out the probability mass function of x IN TABL...

A: There are 15 phone cords.  4 of which work to charge your current phone and 11 of which are either b...

Q: For a certain airline, there is a 75% probability that a given flight will depart on-time, an 80% pr...

A: Let us define the events:     A => Arrival on time      D => Departure on time Then we given  ...

Q: The price of a gallon of milk follows a normal distribution with a mean of $3.4 and a standard devia...

A: Probability: If a random experiment results in n mutually exclusive and equally likely outcomes; out...

Q: For the data below, compute the Pearson correlation.   X Y 7 3 3 1 6 5 4...

A: From the provided information, (x) (y) 7 3 3 1 6 5 4 4 5 2

Q: what effect does standardizing into z-score have on the shape of the distribution of a variable?

A: standardizing into z score changes the center by making the mean 0 .standardizing into z score chang...

Q: The table below shows the midterm exam score (x) and the final examscore (y) for randomly chosen 7 s...

A: a)Draw the scatterplot for the given data-   It is clear from the scatter plot that there is positiv...

Q: the random variable x represents the number of computers that families ha e along with the correspon...

A: Mean E[x] = ∑xP(x)

Q: The Stem and Leaf output that corresponds to a set of test scores is as follows:  Stem-and-leaf of ...

A: From the given stem and leaf plot, 21, 23, 23, 27, 28, 28, 31, 31, 34, 35, 36, 36, 36, 36, 39, 40, 4...

Q: Please help solve question a in picture

A: Given - x¯ =1217.857143      and  y¯ =39.35714286 ∑x=17050 ∑y=551 ∑x2=41185500    ∑y2=23265 ∑xy=5398...

Q: a. Choose the answer: 1) Alternative Hypothesis: The population proportion of the currently working ...

A: The hypothesis can be constructed as: Null hypothesis is the statement of no differences which state...

Q: I got it wrong can you help

A: Dara in acceding order: For Q1​ we have to compute the position: Since 5 is an integer number, Q1​...

Q: Find the mean and standard deviation

A: Uniform Distribution :  The uniform distribution is a type of continuous probability distribution th...

Q: *BOLD MEANS I NEED HELP ON THIS SECTION. PLEASE LOOK AT IMAGES.  The Stanford University Heart Trans...

A: The 2x2 contingency table is given We can calculate the sample proportions of the 2 groups.

Q: 75,000 miles. Fifteen sets of four of these experimental shoes are subjected to accelerated life tes...

A:   X : The number of shoes in each group of four that fail early X follows binomial distribution with...

Q: 6. Gravetter/Wallnau/Forzano, Essentials - Chapter 8 - End-of-chapter question 9 The psychology ...

A: Note : - As per our policy we can answer only one question at a time, please make a new requests for...

Q: Approximately, what is the value of PG (present worth of arithmetic gradient) if G=55, n=12 years, a...

A: Arithmetic gradient: The arithmetic gradient series is the cash flow series that either increases or...

Q: In a recent​ year, the total scores for a certain standardized test were normally​ distributed, with...

A: Z = x- μσ~N(0,1)

Q: Statistics Question

A: From given probability distribution table P(X<=3)=?

Q: Common (combined) probability density function of Y1 and Y2 get it shaped like the picture. The valu...

A:

Q: Fifteen Smart Cars were randomly selected and the highway mileage of each was noted. The analysis yi...

A: Total number for cars randomly selected =15 The variable of interest here is the highway mileage of ...

Q: 7. The sample mean estimator for the population mean a. has a small standard error b. potentially ha...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: A collection of medical scores is Normal with Mean of 50 and Standard Deviation of 10; that is N(50,...

A: Given data,μ=50σ=10Bertha’s score is 47.56  and Biff’s score is  56.82. P(47.56<X<56.82)=?

Q: Fifteen students took a statistics pre-test and post-test. The results are below (a score of 28 is c...

A: (a) Obtain the range of the pre-test scores. The range of the pre-test scores is obtained below as f...

Q: Which technique for gathering data (observational study or experiment) do you think was used in the ...

A: we are told that 41 bighorn we caught and they were injected.

Q: Plz

A: From the given information, the probability transition matrix is, 0.70.20.100.60.40.500.5

Q: A marketing researcher wants to estimate the mean amount spent per year​ ($) on a web site by member...

A: Let, X = Amount spent per year​ ($) on a web site by membership member shoppers. Given that; n=100x¯...

Q: Figure 4.27 lists the results of a student survey pertaining to favorite ethnic foods. Construct a p...

A: Given - The Given information to provide a student survey pertaining to fevorite ethnic foods  In Ex...

Q: A coin is unfair with 1700 tosses and a 5 percent significance level. If the coin has a tail bias --...

A: As the tossing of coin experiment appears to be following Binomial Distribution with n=1700(No of ob...