Start your trial now! First week only $4.99!*arrow_forward*

Question

I do not know how to do normal probality density function

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: Find the critical value and rejection region for the type of t-test with level of significance α an...

A: Note:Hey! Thank you for posting the question. Since you have not mentioned the purpose for which the...

Q: Natasha is a physician looking to determine whether a supplement is effective in helping men lose we...

A: Test statistic results:For testing whether a supplement is effective in helping men lose weight or n...

Q: Suppose that you want to do statitical significance tests for fourcorrelations and you want your EWa...

A: According to the provided information, it is required to conduct statistical tests for four correlat...

Q: Suppose x has a distribution with μ = 18 and σ = 10. (a) If a random sample of size n = 37 is drawn,...

A: In this question, it has been given that X follows a distribution with mean 18 and standard deviatio...

Q: You draw and keep a single coin from a bowl that contains 12 pennies, 9 dimes, and 20 quarters. What...

A: The given information is that the bowl contains the12 pennies, 9 dimes, and 20 quarters.It is known ...

Q: Construct a probability distribution for the data and draw a graph for the distribution. Find the m...

A: The probability distribution is given by:

Q: 9.3 Question is in the attached picture.

A: a. Identifying whether the linear combination are contrast:Contrast:A contrast is linear combination...

Q: I asked the attached question earlier today, and a response was sent, but none of the answer appeare...

A: Introduction to binomial distribution:Consider a random experiment involving n independent trials, s...

Q: What is the condition on the probability of success p that will guarantee the histogram of a binomia...

A: The binomial distribution has p - probability of success and n- number of trails. The binomial distr...

Q: How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y b...

A: Part (a):The scatter diagram, along with the best fitted line (least-squares regression line) for th...

Q: The flow in a river can be modeled as a log-normal distribution. From the data, it was estimated tha...

A: According to the given question, the flow in a river can be modeled as a log-normal distribution. Fr...

Q: Previously, you studied linear combinations of independent random variables. What happens if the var...

A: Hey, since there are multiple subpart questions posted, we will answer first three subparts. If you ...

Q: (c) In 1997, the U.S. population was approximately 266,570,000 people. At the rate of 440 prisoners ...

A: Given number of prisoners for 100,000 population = 440Rate of prisoners = 440/100,000U S population ...

Q: I need help understanding observational units, variables, how to formulate research questions.

A: Solution:Observational units:Observational units are the objects or entities on which information co...

Q: Jobs and productivity! How do retail stores rate? One way to answer this question is to examine annu...

A: Note:Hi! Thank you for posting the question. Since your question has more than 3 parts, we have solv...

Q: How are r and r2 interpreted?

A: In this question, we have to explain how we interpret r and r2

Q: Do heavier cars really use more gasoline? Suppose a car is chosen at random. Let x be the weight of ...

A: Hello there! There are more than three sub parts in the given quesiton. According to our policies ca...

Q: A recent poll by the American Automobile Club found that 74.5% of those surveyed are worried about a...

A: From the provided information we have the following values:Probability that a person worried about a...

Q: A raffle is being held to benefit the local animal shelter. They sell 832 tickets that do not win an...

A: Total number of tickets sold = 832+9+1 = 842Price of each ticket = $5Total income from 842 tickets =...

Q: Statistics Question

A: Solution:It is given that “Budget” as x variable and significance level of α=0.05.The regression equ...

Q: This study investigated the cognitive effects of stimulant medication in children with Attention-Def...

A: Click to see the answer

Q: A group of data items and their mean are given. 12, 20, 28, 48, 72, 108; Mean=48 A. Type the deviat...

A: A.Computing the deviation from mean for each of the data:Here the data items are 12, 20, 28, 48, 72,...

Q: How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in te...

A: (a)Using the provided data, the sample mean and standard deviation can be calculated using Excel fun...

Q: A police officer claims that the proportion of accidents that occur in the daytime (versus nighttime...

A: Test statistic calculation:In this context, a police officer claimed that the proportion of accident...

Q: Deborah wants to estimate the percentage of people who eat fast food at least once per week. She wan...

A: Margin of error is usually computed using the formula below. In this question, Margin of error is k...

Q: A normal distribution has a mean of 10 and a standard deviation of 10. What is the number such that ...

A: The given information is that the scores distributed normally with mean 10 and variance is 49. The s...

Q: A librarian would like to determine whether a new book appeals more to adults or to children. The li...

A: Independent samples:Two samples are independent if the sample values selected from one population ar...

Q: For frecuency distribution for us governor 2019. Party. Frequency Democratic. ...

A: For any event A, the probability of A can be found as follows:

Q: Doctor Frederick believes the population mean weight of adult male patients in his practice is exact...

A: The aim is to find the accurate statement from the following options to evaluate the claim that the ...

Q: Douglas is a farmer who believes that his cow produces an average of 7 gallons of milk per day. To t...

A: The aim is to find the range of p-value.

Q: A recent poll by the American Automobile Club found that 74.5% of those surveyed are worried about a...

A: Hey there! Thank you for posting the question. As your question has more than 3 parts, we have solve...

Q: The state superintendent of schools consistently states that the average salary of all substitute te...

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you. ...

Q: You are the foreman of the Bar-S cattle ranch in Colorado. A neighboring ranch has calves for sale, ...

A: Note: We are authorized to answer 3 sub parts at a time, since you have not mentioned which subparts...

Q: Part A, B, C

A: Here, the population standard deviation is unknown, so the t-distribution is used.It is provided tha...

Q: Suppose x has a distribution with μ = 60 and σ = 17. (a) If random samples of size n = 16 are select...

A: Note:Hi there! Thank you for posting the question. The Part (b) of your question asks about the “x d...

Q: I am working on constructing a histogram for some data for the 39 US national parks under 900,000 ac...

A: According to the given data41 ,66 ,233 ,775 ,169, 36 ,338 ,233 ,236, 64,183 ,61 ,13 ,308 ,77,520, 77...

Q: a. Which of the six correlations above are statistically significant (i) if you test each correlatio...

A: We have been given alpha = 0.05 which implies that the probability of inferring that there is a cor...

Q: What does it mean when two variables are described as “positively correlated”?

A: In statistical analysis to measure the relation between two bivariate data, then if the change of a ...

Q: Listed below are the number of cricket chirps in 1 min and the corresponding temperatures in degrees...

A: In this question we have given the data about no. of chirps in 1 min and the corresponding temperatu...

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's deg...

A: Note:Thank you for posting the question! Since your question has more than 3 parts, we have solved t...

Q: Describe when a given distribution is a probability distribution.

A: Let us assume X be a random variable such that X connected with the outcome of a random experiment w...

Q: Which statement regarding correlation is true? A. The dependent variable is assigned to the Y axi...

A: Correlation coefficient - r:The Karl Pearson’s product-moment correlation coefficient or simply, the...

Q: (c) Explain why four students coming in late would not necessarily form a random sample. (Select all...

A: (c)A random sample represents the whole population properly.It can happen that some students will be...

Q: Can a low barometer reading be used to predict maximum wind speed of an approaching tropical cyclone...

A: In this question we have the data, using which we have to plot the scatter plot and best line of fit...

Q: A. A population has a mean of 6.9 and standard deviation of 2.6. Find the value that has 80% of the ...

A: Given Population mean = 6.9Standard deviation = 2.6The Z score with the area left to it close to 0.8...

Q: Need (b) and (c) Let X denote the data transfer time (ms) in a grid computing system (the time requi...

A: (a)Finding the values of α and β :The random variable X represents the data transfer time in a grid ...

Q: Hi. How do you arrive at an answer using the TI-83? Thanks.

A: Solution:99% confidence interval for the slope of the regression line is calculated using EXCEL.The ...

Q: Fifty-three percent of all persons in the U.S. population have at least some college education. Cho...

A: According to the given question, Fifty-three percent of all persons in the U.S. population have at l...

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.30...

A: Introduction:The test hypotheses are:Null hypothesis:H0: p = 0.30, that is, 30% in the sample of 1,1...

Q: I want you to come up with one study idea that would use a one sample chi square and one study that ...

A: The one sample Chi-square test is also called as Chi-square goodness of fit, which is used to decide...