Math

StatisticsQ&A LibraryThe patient recovery time from a particular surgical procedure is normally distributed with a mean of 3 days and a standard deviation of 1.6 days. Let X be the recovery time for a randomly selected patient. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N( b. What is the median recovery time? days c. What is the Z-score for a patient that took 4.8 days to recover?Start your trial now! First week only $4.99!*arrow_forward*

Question

help with a,b,c please.

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: A survey in Newsweek in 1999 asked 747 randomly selected women “how satisfied are you with your over...

A: In the given situation, the two variables are possible responses and women age. Here, we need check ...

Q: A survey asks: Which online services have you used in the last month:• Twitter• Facebook• Have used ...

A: Solution: Let A be the event that a person use Twitter and B be the event that a person use Facebook...

Q: For a sample of n = 30 scores, a score that is 6 points above the mean has a z-score of z = 1.50. Wh...

A: For a sample of n = 30 scores, a score that is 6 points above the mean has a z-score of z = 1.50.

Q: Consider the probability distribution shown below. x 0 1 2 P(x) 0.45 0.50 0.05 Compute the ...

A: 0 0.45 0 0 0 1 0.5 0.5 1 0.5 2 0.05 0.1 4 0.2 Compute the expected value of the dis...

Q: You measure 31 turtles' weights, and find they have a mean weight of 59 ounces. Assume the populatio...

A: Click to see the answer

Q: In a binomial experiment consisting of six trials, what is the number of different values that x (th...

A: Given information Number of trials = 6 Number of different values that X can assume = 0,1,2,3,4,5,6

Q: The proportion of households in a region that do some or all of their banking on the Internet is 0.4...

A: Given information Proportion of people who do banking on the internet p = 0.41 Sample size n = 1000

Q: TYPE (including your name) the question on a separate page and the solution must fill an entire pa...

A: Given information- Population mean, μ = 106.9 min Sample size, n = 20 Sample mean, x-bar = 69.6 minu...

Q: A company that makes baseball caps for babies is designing a new type of hat for toddlers. The new h...

A: Here we are need to find the maximum and minimum head sizes for each new hat. Here each means we are...

Q: Suppose that a particular candidate for public office is in fact favored by 48% of all registered vo...

A: A particular candidate for public office is in fact favored by 48% of all registered voters in the d...

Q: 72% of owned dogs in the United States are spayed or neutered. Round your answers to four decimal pl...

A: I will use excel to solve this question. https://drive.google.com/file/d/18goMRBrhc5ibw04bsCc3pi...

Q: Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advan...

A: Given information, Over a period of months, an adult male patient has taken nine blood tests for uri...

Q: 21.1% of flowers of a certain species bloom "early" (before May 1st). You work for an arboretum and ...

A: Given information- We have given that 1% of flowers of a certain species bloom “early”. a) We have g...

Q: You want to estimate the average weight in tons of loads carried by trucks through a particular stre...

A: Click to see the answer

Q: In a recent Super Bowl, a TV network predicted that 42 % of the audience would express an interest i...

A: Given information

Q: An unfair coin with a probabilty of tails as 0.55 is tossed 8 times. Find the probability that a tai...

A: Click to see the answer

Q: Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.t Suppose a small ...

A: Since we know population standard deviation, use z-distribution to find z-critical value. https...

Q: A researcher expects a treatment to produce an increase in the population mean. Assuming a normal di...

A: 1. According to the sum, A researcher expects treatment to produce an increase in the population mea...

Q: Using your favorite statistics software package, you generate a scatter plot which displays a linear...

A: Answer: The given values are SD(X)=1.46 SD(y)=5.54 And slope=β1 1.74 Correlation Coefficient =r

Q: Suppose that a company owns 400 computers. Each computer has an 11% probability of not working. Supp...

A: Obtain the probability that at least 17 computers are in good condition The probability that at leas...

Q: an unfair coin with the probability of tails as 0.43 is tossed 5 times. What is the probability that...

A: The number of times tossed a coin is, n = 5 The probability of getting tail is, 0.43 The probability...

Q: Given below is a bivariate distribution for the random variables x and y. f(x, y) x y 0.3 50 ...

A: We are authorised to answer three subparts at a time since you have not mentioned which part you ar...

Q: A graduate student wanted to estimate the average time spent studying among graduate students at her...

A: Click to see the answer

Q: Salaries for teachers are normally distributed with a mean $53,000 and a standard deviationof $5,500...

A: Hi, the question has sub-parts more than 3. So, as per the guidelines i am obliged to answer first t...

Q: At a computer manufacturing company, the actual size of computer chips is normally distributed with ...

A: Click to see the answer

Q: Calculate the center line (CL), upper control limit (UCL), and lower control limit (LCL) for x-bar a...

A: It is given that, A production process is monitored using x¯ and R charts. Number of sample (N) = 10...

Q: Consider a random sample of size n = 41, with sample mean x = 45.5 and sample standard deviation s =...

A: We are authorised to answer three subparts at a time since you have not mentioned which part you ar...

Q: Question 13. The SAT math scores of a particular high school in New Jersey are approximately normall...

A: Let X denotes the math scores of students, μ is the mean score with a standard deviation σ then, ...

Q: You may need to use the appropriate appendix table or technology to answer this question. z is a sta...

A: Solution: 9. From the given information, z is a standard normal variable.

Q: Select one card from a deck of well-shuffled cards. What is the probability we select a face or a he...

A: Given : Let A be the event of getting face card from a deck of well-shuffled cards P(A) = 1252 Let ...

Q: How do you solve, ref W10Q4

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you ar...

Q: Given the normally distributed variable X with mean 18 and standard deviation 3, find P (X s 15)

A: Click to see the answer

Q: Problem 10 The following random sample has been observed: 4.0, 11.4, 5.2, 17.1, 24.5, 3.3, 20.1, 35....

A: Mean Excess Loss Function: In actuarial statistics, it is mainly used in the insurance companies. Th...

Q: the variance of the probability distribution

A: It is given that k=1/6.

Q: 1. From a perspective of Statistical Process Control (SPC), a six-sigma process will have which of t...

A: Characteristics of 6 sigma a) Six Sigma lies between lower and upper specification limits. b) Proces...

Q: 1. Find the critical value(s) and rejection region(s) for the indicated t-test, level of signific...

A: The rejection region for a left-tailed t-test is defined as, t≤tn-1,1-α where, t is the value of the...

Q: In a recent Super Bowl, a TV network predicted that 36 % of the audience would express an interest i...

A: Given that, The sample proportion is, Null and alternative hypothesis:

Q: A tire store advertises that the average price of a new set of their tires is only $150. One of thei...

A: As per the information given, the hypothesis of interest is H0: μ=150 vs H1:μ>150 (right-...

Q: find the standard deviation for: 25% of students who took an examination scored more than 73 in an e...

A: The standard deviation for 25% of students who took an examination scored more than 73 in an examina...

Q: question 6.3 6 The pucks used by the National Hockey League for ice hockey must weigh between 5.5 an...

A: Let X denote the weights of pucks produced at a factory are normally distributed with a mean of 5.63...

Q: Let X be the discrete r.v. that represents the number of Boys in a three-child family. Assume that t...

A: The variable X is the number of Boys in a three-child family with the outcomes boys and girls are eq...

Q: Beer and blood alcohol content: Many people believe that gender, weight, drinking habits, and many ...

A: Here, the explanatory variable is cans of beer and the response variable is BAC (grams per deciliter...

Q: A random sample of n = 4 scores is obtained from a normal population with u = 30 and o= 8. What is %...

A: Mean = 30 Standard deviation = 8 Sample size = 4

Q: You are performing a two-tailed test.If α=.001α=.001, find the positive critical value, to three dec...

A: Computation of critical value: α=0.001α2=0.00051-α2=0.9995 The critical value of z-distribution can ...

Q: Acme Toy Company prints baseball cards. The company claims that 30% of the cards are rookies, 60% ve...

A: Null hypothesis: H0: The three proportions are same. Alternative hypothesis: Ha: At least two prop...

Q: I need the red x's answered

A: The observed value (Oi) is: Size of company Yes No Total Small 40 10 50 Medi...

Q: Researchers have noted a decline in cognitive functioning as people age (Bartus, 1990). However, the...

A: Let μ denotes the population mean. The claim of the test is the supplement has a significant increas...

Q: The following table gives the sales of CD_Rom drives and compact disk players for selected years and...

A: Steps to construct scatter plot in Excel: Enter the data for x and y in Excel sheet Select the co...