The amount of pollutants that are found in waterways near large cities is normally distributed with mean 8.5 ppm and standard deviation 1.7 ppm. 10 randomly selected large cities are studied. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N( b. What is the distribution of ¤? ¤ - N( c. What is the probability that one randomly selected city's waterway will have less than 8.8 ppm pollutants? d. For the 10 cities, find the probability that the average amount of pollutants is less than 8.8 ppm. e. For part d), is the assumption that the distribution is normal necessary? O NoO Yes f. Find the IQR for the average of 10 cities. Q1 = ppm Q3 = ppm IQR: ppm

Q: The equation y = 9x + 15 represents the relationship between the number of bags sold and the cost of...

A: Given equation is y=9x+15and no.of bags sold (x) is 18.

Q: A random sample of 36 values is drawn from a mound-shaped and symmetric distribution. The sample mea...

A: For the given data, Perform one sample t-test

Q: Evaluate the following F(5;4) (the incomplete gamma

A: F(5; 4): Formula: Fx;α=∫0x1γαyα-1e-ydy Consider, F5;4=∫051γ4y4-1e-ydy          =16∫05y3e-ydy        ...

Q: Clark Heter is an industrial engineer at Lyons Products. He would like to determine whether there ar...

A:

Q: A group of sevèn week-old chickens reared on a high protein diet weigh 12, 15, 11, 16, 14, 14 and 16...

A:

Q: When a set of data is very precise, it is necessarily very accurate. True False

A: Given the statement that When a set of data is very precise, it is necessarily very accurate.

Q: In a normal distribution with a mean of 15 and standard deviation of 3, what does a z-score of -2 in...

A: here use standard normal distrivution properti

Q: The mean of data set A is 42. The mean of data set B is 47. The mean absolute deviation (MAD) of bot...

A: The mean of data set A is 42.

Q: A Trucking Company claims that the mean weight for their delivery trucks when they are fully loaded ...

A:

Q: Given H = 310, determine the probability of a Type Il error for the following test of hypothesis: Но...

A: Type II error : A type II error could be a applied math phrase employed in hypothesis testing to exp...

Q: hean or 2.5 standard deviations below the mean to answer the following questions. (a) Would it be un...

A: Given binomial distribution of 200 trials with expected value 80 and standard deviation of about 6.9...

Q: What does the standard deviation measure?

A:

Q: In the following probability distribution, the random variable x represents the number of activities...

A: Solution-: As per our guidelines we can solve first three sub part of question and rest can be repos...

Q: Marks obtained by 9 students in statistics are given below : 52, 75, 40, 70, 43, 40, 65, 35, 48. Cal...

A:

Q: Approximately 68% Approximately 95% Approximately 75% Approximately 88.9% Almost all e of customer a...

A: Let X be the random variable from below shaped (normal) distribution with average pr mean (μ) = 29 a...

Q: Use n= 10 and p =0.75 to complete parts (a) through (d) below. (a) Construct a binomial probability ...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: ¥ Question Completion Status: QUESTION 41 Describe the type of association in the scatterplot above....

A: For the given scatter plot Describe the type of association

Q: 6. Find the z-scores that bound the middle 85.02% of the area under the standard normal curve. A. (-...

A: As per our guidelines we are supposed to answer only one question per post so I am solving first que...

Q: Suppose, 12 air conditioners are returned to their distributors and among them, 7 air conditioners h...

A: Given that  Number of air conditioner (n)=12  Number of defective (X)=7 Then we have to find  a) If ...

Q: An five tosses of a coin, find the probability of getting exactly x heads and hence find the expecte...

A:

Q: Question 1 Consider a 3 dimensional contingency table. Decide if the following statements are true o...

A:

Q: The median stock price for firms in the Camaro Stock Market is $30, and the standard deviation is $8...

A:

Q: .5 .25 1.4 1.5 .85 .20 1.5 1.75 .10 .65 .75 1.10 1.65 1.4 .6 .35 .40 .25 a. What is the mean number ...

A: Given:   0.5 0.2 0.75 1.4 0.25 1.5 2 0.6 1.4 1.75 1 0.35 1.5 0.1 1.1...

Q: Ấn five tosses of a coin, find the probability of getting exactly x heads and hence find the expecte...

A: Let X be the number of head  5 coin tossed  n=5  Le t x be the number of getting head  Let p be the ...

Q: Using your own words, discuss how a correlated-groups t test has more statistical power in compariso...

A:

Q: Theorem 7-13. µ'n = E {X (X – 1) ... (X =r+ 1)} = P (9) , where u' is the rth %3D ds factorial momen...

A:

Q: 2. Which of the following illustrate(s) inferential statistics? I. Using data from the 2000 Family I...

A: Inferential statistics is involved in drawing inferences about the population from the sample, which...

Q: Suppose the provincial health officer of Batngas reported that the average COVID-19 positive for 40 ...

A:

Q: 4. The distance of the number in the horizontal line or the x-axis should always proportional. 5 The...

A: We have given that, (4) The distance of the number in the horizontal line or the x- axis should alwa...

Q: What is the probability that the family has four children? b) What is the probability that the fami...

A:

Q: In 2021, many agricultural firms, which reported their profits, had beaten the market- profit estima...

A:

Q: The null and alternate hypotheses are: H0 : μ1 = μ2 H1 : μ1 ≠ μ2 A random sample of 10 observation...

A: Given Data : For Sample 1 x̄1 = 23 s1 = 4 n1 = 10 For Sample 2 x...

Q: Listed is a series of experiments and associated random variables. In each case, identify the values...

A:  a) X- number of questions answered Correctly The values of the random variables can assume is 0,1,2...

Q: Having more than 1,000 students in a year, assume that I choose a simple random samples of 30 final ...

A:

Q: .5 .25 1.4 1.5 .85 .20 1.5 1.75 .10 .65 .75 2 1 1.10 1.65 1.4 .6 .35 .40 .25 a. What is the mean num...

A: Given the data set to find the percentile rank of a student who travel 0.75 hrs.

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

A: It is given that the sample mean is 5.37 and the population standard deviation is 1.77.

Q: A site manager at a manufacturing plant is reviewing a shipment of parts about to be sent to a custo...

A: Provided that the shipment will be returned when more than one percent of parts are defective. The i...

Q: Calculate the mean deviation from the mean for the following distribution : Marks No. of students : ...

A:

Q: A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compu...

A:

Q: A. Use Empirical rule to complete the following table. Write on the respective column the range or i...

A: Empirical Rule : The empirical rule may be a shorthand utilized in statistics to recollect p.cage|th...

Q: Find the 20th percentile of the data 4 5 11346 2

A: Given data is 4,5,1,1,3,4,6,2sample size(n)=8

Q: Marks obtained by 9 students in statistics are given w: 52, 75, 40, 70, 43, 40, 65, 35, 48. Calculat...

A: Given:  marks obtained of 9 students are given  Xi: 52,75,40,70,43,40,65,35,48 find arithmetic mean ...

Q: question(3): based on an article published  in the city of toronto the response time is  6  ,7  ,9...

A: The sample mean is as follows: The sample standard deviation is as follows:

Q: For the Central Limit Theorem, the idea is that the more values within your data set, the more the d...

A: We are given below Histogram.

Q: Using Laptops on Flights. An airline promotion to business travelers is based on the assumption that...

A: For testing the difference between population proportion and sample proportion, the appropriate test...

Q: For #s 9- 10 refer to the problem below: You were planning to open a "McJobee". In order to have an ...

A: Let X be the amount and P(x) be the percentage of profit/loss.

Q: b) Rachel received the following scores on the midtermn and final examinations in his introductory p...

A: Introduction :-  Given :-  We are asked two questions on it.

Q: Choose the most appropriate completion of the sentence. In order to indicate a strong correlation be...

A:

Q: Select all of the events that would be considered to be mutually exclusive events. O banana and appl...

A: Solution-: Select all of the given events that would be considered to be mutually exclusive events. ...

Q: 3 P(A or B) 10 9 find P(A) 10 P(B) 3 1 P(A) = Р (4) : P(B) Р (В) — find P(A and B) = %3D 4 ||

A: The union probability for any two events A and B is defined as P(A ∪ B) = P(A)  + P(B) – P(A ∩ B).