A simple random sample of size n=12 is obtained from a population with u=63 and 6=19. a, What must be true regarding the distribution of the population in order to use the normal model to compute probabilities involving the sample mean? Assuming that this condition is true, describe the sampling distribution of x bar. b, Assuming the normal model can be used, determine P(x>=66.9) c, Assuming the normal model can be used, determine P(x>=65.3)

Q: The standard deviation of the wages of 400 textile workers is $. 12.8. Another sample of 500 textile...

A:

Q: Each spinner is spun once. Find the probability of each (Note that there are repetitions): parts 1 4...

A: Consider the two spinners are spun independently. a) P(A and 1): PA and 1=PA×P1                    =...

Q: A car hire firm has two cars, which it hires out day by day. The number.of demands for a car on each...

A:

Q: In a moderately skewed frequency distribution mean is 50 and median is 53. If the coefficient of var...

A:

Q: A manufacturer of computer stands made a batch of 40,000 bases. 500 bases were taken to make a measu...

A: Given that,  For 500 bases,  Population mean (µ): 20.10 cm Population Standard deviation (σ) : 1 cm ...

Q: If a seed is planted, it has a 35% chance of growing into a healthy plant. Let X be the number of se...

A:

Q: In a sample with M = 60 and s = 10 a score of X = 70 corresponds to a z-score of z = +1.00 because i...

A:

Q: For the following data obtain (î) mean, (ii) median, (ii) mean deviation from median, and (iv) the c...

A:

Q: 1. For parts a-c, state whether X follows a binomial distribution. If X is binomial, give the values...

A: Given: Whether X follows the binomial distribution or not

Q: what should be Mark's conclusion at 4% level of significance?

A: here  Mingming, Mark's cat, recently got pregnant and is expecting 6 cubs according on her doctor. M...

Q: (a) Suppose a mechanic begins to diagnose the problem by checking the spark plugs first and find the...

A:

Q: Scenario: The Department of Health is conducting random drug testing in a barangay in relation to th...

A: As per the honor code, we are allowed to answer three sub-parts at a time so we are answering the fi...

Q: In a survey of 1485 people, 973 people said they voted in a recent presidential election. Voting rec...

A:

Q: Without doing any computation, put the following order from least to greatest, assuming the populati...

A:

Q: Sadie predicted that chimps who had just moved to a new enclosure would start to socialize more afte...

A: "Since you have posted a question with multiple subparts, we will solve first 3 sub-parts for you. T...

Q: Quantitative Question A university is hosting a music festival and will sell tickets online. They kn...

A:

Q: 11. In a partially destroyed laboratory record of an analysis of correlation data, the following res...

A:  

Q: Examine by contingency table method, whether the nature of area is related to voting preference. The...

A: Solution is given:

Q: Find: a randomly selected adult exercises regularly.  a randomly selected adult is aged 18–44.  a...

A: Let us define some events A : an adult exercises regularly. B : an adult is aged 18-44. It is given ...

Q: 12. You are given the following data pertaining to kilowatt hours of electricity consumed by 100 per...

A: Given data is Consumption (in k watt hrs) 0-10 10-20 20-30 30-40 40-50 No.of users 6 25 36 20 1...

Q: Think about the LED suribozrd example from the Ch 9 Powerpoint presented during class Suppos we cond...

A:

Q: fllustration 12.12. Fit a trend line by the method of four yearly moving averages to the following t...

A:

Q: use a normal approximation to find the probability of the indicated number of voters. In the case, a...

A:

Q: An individual has 30% probability of making a half-court shot independent of other shots taken. Thi...

A: Given: n =    4 p =   0.3  

Q: Researchers examined the influence of a television program on children's aggressiveness. The number ...

A: 1.   Assume that μ defines the true average number of aggressive responses typically performed by ch...

Q: Let X be a binomial random variable that is binomially distributed with a mean of 9 and a variance o...

A:  binomially distributed with a mean of 9 and a variance of 6. Find q =?

Q: Nlustration 12.14. Trend equation for yearly sales (in 1000 Rs) for a commodity with year 1971 as or...

A:

Q: In each of the following examples, identify the sampling method being used and explain why. 1. A so...

A: Sampling method can be of 2 types as given below: Probability sampling method Non-probability sampl...

Q: Scenario: The Department of Health is conducting random drug testing in a barangay in relation to th...

A: Probability sampling: It involves random selection, allowing us to make statistical inferences about...

Q: Which of the following is true about Chi-square tests and F tests? [f] O Both measure the discrepanc...

A: Solution-: We find the true statement about the chi-square tests and F-tests?

Q: How many different 2 card hands can be dealt from a deck of 52 cards? The order of the cards does no...

A: GivenTotal no.of cards in a deck =52

Q: What is the probability that he wins on the second trial?   A gambler decides to bet on “Red” until...

A: A gambler plays roulette at Monte Carlo and continues gambling. A gambler is wagering the same amoun...

Q: "The weights of 1,000 children, in average, is 54kg with standard deviation of 17kg. Suppose the wei...

A:

Q: (c) The marble is red or odd-numbered Your answer is : ? (d) The marble is blue and even-numbered

A: Here given A jar contains 10 red marbles numbered 1 to 10 and 12 blue marbles numbered 1 to 12. A ma...

Q: A study is undertaken to test the research hypothesis that a student’s knowledge of Thunder Bay impr...

A: Given dataA study is undertaken to test the research hypothesis.A series of random slides are prepar...

Q: 11. In a group presentation, the average geometric r easoning of Grade 10 students in a M athematics...

A: Since there are multiple questions (10 and 11), we will answer one full question (11) for you.  Ques...

Q: Use the data in the following table, which lists survey results from high school drivers at least 16...

A: From the given table we know thatTotal no.of high school drivers=737+157+3027+4428Total no.of high s...

Q: Example 12. Calculate the mean deviation about the mean for the following data: x : 5 15 25 35 45 55...

A:

Q: Transcriptional bursting is a fundamental property of genes in which transcription from DNA to mRNA ...

A:

Q: Scenario: The Department of Health is conducting random drug testing in a barangay in relation to th...

A: Given that - Scenario The Department of Health is conducting random drug testing in a barangay in re...

Q: Among college students, the proportion p who say they’re interested in their congressional district...

A:

Q: The data represent the results for a test for a certain disease. Assume one individual from the grou...

A: here total positive = 153 total negative = 147 total individual actually have disease = 164 total in...

Q: 10% of all Americans live in poverty. If 36 Americans are randomly selected, find the probability th...

A: Givenp=0.10n=36Let "x" be the no.of americans live in povertyx~Binomial(n=36,p=0.10)P(X=x)=(nx)×px×(...

Q: 4. What is the probability that 60 mRNA transcripts are made until the 4th burst?

A: here  p= probability of burst in gene expression = 0.065  

Q: In a clinical trial of Nasonex, 300 allergy patients were randomized into two groups, with Group 1 r...

A: 1.   Denote p1, p2 as the true incidence rate of headaches for Nasonex users and incidence rate of h...

Q: Example The number of males in each 106 eight-pig litters was found, and they are given by the follo...

A: Solution is given:

Q: If a student guesses randomly and independently, what is the probability that she is correct only on...

A: here given , there are 5 multiple choice question  here p= probability of correct answer = 15 q =1-p...

Q: How to find the z score in statistics

A: Given, How to find the z score in statistics.  

Q: A gambler plays roulette at Monte Carlo and continues gambling. A gambler is wagering the same amoun...

A: Given that  Red until he wins  Probability of red =18/38 We have to find  1..Note that he has only e...

Q: SPdihary deck of cards, returning the card each time and if the number of red cards drawn is at most...

A: Here AS per policy I have calculated first main question  Here check condition for binomial theorem