following may not be an actual observation except for?   Class mark   Mode   Mean   Median

Q: In an FBI training exercise twelve new recruits are to break into six pairs for physical skill drill...

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Q: A political candidate has asked you to conduct a poll to determine what percentage of people support...

A: We have given that,  Margin of error (E) = 5% = 0.05 and confidence level (C.I) = 95% = 0.95  Then, ...

Q: How do you write a research questionnaire?

A: The objective is to write the steps in a research hypothesis.  

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Q: In a random sample of six mobile​ devices, the mean repair cost was ​$65.00 and the standard deviati...

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Q: 1 By how many times does the sample size have to be increased to decrease the margin of error by a f...

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Q: Find the probability for each house that the electric usage will not exceed 400W. 2. Find the probab...

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Q: Hyunjin is a famous model and has great taste in clothes. His mom ask him to pick any  jacket, shirt...

A: Given : No. of shirts = 8 No. of Jackets = 3 No. of shorts = 5  

Q: Two dice, a 8-sided one and a  10-sided one are shaken in a cup then "rolled" onto a table.  How man...

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Q: (b) Use a multiple regression model with dummy variables as follows to develop an equation to accoun...

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Q: i) If you have twenty ones and fifteen zeroes how many ways can we arrange these digits such that no...

A: Disclaimer : Since you have asked multiple question, we will solve the first question for you. If yo...

Q: 2) The table below compares two samples taken to compare the mean age of individuals who purchased t...

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Q: A certain maternity wind has a mean number of 17 babies born a day. what is the probability of 7 bab...

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Q: It is estimated that 12% of the vehicles entering Canada from the United States carry undeclared goo...

A: Given P=0.12 n=300 q=0.88

Q: To assess whether two factors are independent or not, you can apply the test of independence that us...

A: Solution-: As below we fill up given sentence with group of answer choices To assess whether two fac...

Q: You run a factory that produces widgets (no, you'll never escape the widgets). Widget diameters are ...

A: According to guidelines we solve only first question when the questions are unrelated .

Q: What is the area of the shaded region shown in the given figure? -1.96 1.96

A:

Q: Use the standard normal distribution or the​ t-distribution to construct a 95​% confidence interval ...

A: Given, Sample mean(x̅) = 26.7 Standard deviation(s) =  6.09 Sample size (n)  = 45 α = 1- 0.95 = 0.05...

Q: ) Find the expected mean number of boys in a committee of 3 people selected at random from 4 boys an...

A: Let X be the number of boys  let p be the probability of boys  n=number of people in the committee  ...

Q: a. The heights of NBA players are normally distributed, with an average height of 6'7" (i.e. 79 inch...

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Q: Consider the following time series data. Week 1 3 4 Value 19 12 17 10 18 15 Using the naive method (...

A: c.

Q: For a random variable x the expected value of X is equal to 5 and the variance of X is equal to 35. ...

A: We have given that the random variable X has the expected value E(X) is 5 and variance of X i.e,  V(...

Q: A really bad carton of 30 eggs contains 8 spoiled eggs. An unsuspecting chef picks 5 eggs at random ...

A: Given,no.of spoiled eggs=8no.of unspoiled eggs=22Total no.of eggs=30

Q: "An electrical firm manufactures light bulbs that have a length of life that is approximately normal...

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Q: The annual earnings​ (in dollars) of 35 randomly selected microbiologists are shown in the data tabl...

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Q: I keep ending up with 76 and 83 and anything after it with a decimal point has been wrong so far. Fo...

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Q: Problem 10. From a pack of 52 cards, one card is drawn at random. Find the chance of drawing or draw...

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Q: The random variable X, representing the number of defective missiles when 3 missiles are fired, has ...

A: Given data, x P(X=x)0 0.511 0.382 0.103 0.01 Calculate the mean and variance.

Q: (1) Write out the regression equation  (2) What is the sample size used in this investigation?  (3) ...

A: 1) From the output, the coefficient of constant is 42.085

Q: In a statistics class, 10 scores were randomly selected, and the following results were obtained: 74...

A: From the provided information, The data values are 74, 73, 77, 77, 71, 68, 65, 77, 67, 66 Sample siz...

Q: A researcher wanted to find out whether IQ is a function of family size.  The speculation was that a...

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Q: Find the probability distribution of the sum of the numbers when a pair of dice is rolled? Consider ...

A: When a pair of dice are rolled, there will be 6*6 = 36 outcomes.  

Q: Calculate the Banzhaf power index for each voter. Suppose the voters in the order listed are A, B, C...

A: {34: 22, 12, 9, 3}

Q: Generally speaking what is true about the 95% CI for a population level quantity (mean, proportion i...

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only fi...

Q: A researcher wants to know how long it takes, on average, for a certain species of bacteria to divid...

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Q: If the correlation coefficient is –1, which answer is correct? Group of answer choices The slope of...

A: It is given that  Correlation coefficient = -1

Q: The amount of calories consumed by customers at the Chinese buffet is normally distributed with mean...

A: As per guidelines expert have to answer first question three subparts only..

Q: Illustration 15.10. Find the coefficient of correlation between X and Y, 1 2 3 4 5 7 8. Y 12 11 13 1...

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Q: Suppose a researcher takes a random sample of 1,000 students from a university and creates a 95% con...

A: Here AS per policy I should have to answer first main question even though I have calculated 2 kindl...

Q: ber of sample values. Also, compare the computed standard deviation to the standard deviation obtain...

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Q: The first quartile of a distribution of scores is a value wherein 25% of the distribution falls belo...

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Q: 4. The histogram below shows data on monthly salaries at a small engineering firm. (a) How many empl...

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Q: 2.3 Measures of the Center of the Data 36. Find the mean for the following frequency tables. a. Gr...

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Q: Arriane has geese on her farm. She claims the meah weight of eg less than the mean weight of eggs fr...

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Q: • Describe the natures of the two distributions (uniform, normal, skewed left, skewed right), and id...

A: The nature of the distribution is normal since it is bell shaped.

Q: A sample of n = 81 from a population of u = 80 and o = 18 has a mean M = 81. What is the z-score for...

A: Solution-: Given: n=81,μ=80,σ=18,M=18 We find the z-score for the sample means?

Q: a.  how many five letter codes can be made if each chosen letter (from the the original 7 letters) c...

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