Using the following data as given in the illustration frequencies for normal curve under the area method. find the expectedd Class values : Frequency: 10- 20 20-30 30– 40 40-50 | 50–60 | 60–70 | 70-m 12 28 40 60 32 20

Q: 1. A pair of dice is rolled (6 sided), how many different ways can you get a sum of 8?

A: We have given that the sample space of a pair of dice is rolled. The sample space is S={ (1,1) (1,2)…

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Q: The average local cell phone call length was reported to be 2.27 minutes. A random sample of 10…

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A: Given Information: Mean μ=100 Standard deviation σ=1.0

Q: MO22. A textile fiber manufacturer is investigating a new drapery yarn, which the company claims has…

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Q: A factory produces cylindrical metal bar. The production process can be modeled by normal…

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Q: Supposed that the mean age of the employees of warrior's corporation is 45.5 years and the standard…

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Q: The Production manager of GTW Manufacturing Company inspecte pags of biscuits with defective product…

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Q: 30. H p=0.90 Hi p>0.90 Decision Rule: Reject H, if test statistic is greater than z= 2.33. The test…

A: Given that  H0: p=0.90    Vs   Ha: p>0.90 Decision Rule: Reject H0 if test statistics is greater…

Q: If a group of 5 employees are chosen at random, what is the probability that there are exactly 2…

A: It is given that Total employee = 55 Number of senior executives = 4 Sample size = 5

Q: If a person from any of the group is selected at random, what is the probability that this person…

A: here total people 200 40 have type A blood, 75 have type B blood, 60 have type O blood,  25 have…

Q: In testing H,: p = .40 vs. H1: p= 40 a sample proportion (p-hat) was calculated and found equal to…

A: The correct option is  2.86

Q: Follow the steps in solving the problem. -state the null and alternative hypothesis. -choose the…

A: Given that  X=713 , n=1150 , p=65%=0.65

Q: A salad shop is selling fruit cups. Each fruit cup consists of two types of fruit, strawberries and…

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Q: The following table presents the intelligence quotients of runaway boys. Intelligence Quotient 30 -…

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Q: nd the probability of getting exactly 12 out of 30 questions on a true or false question. elect the…

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Q: hich of the following are assumptions for testing a single population proportion? (Select all that…

A: Here, we know that in the one proportion test,  It must be numerical. Population is normal,…

Q: Let X and Y be jointly continuous random variables with joint PDF 6e-(2x+3y) x, y > 0 fx,x(x, y)…

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Q: 3) In how many ways can three bracelets be selected from a box of ten bracelets?

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Q: Assume that both populations are normally distributed. (a) Test whether u, + µ, at the a = 0.05…

A: Given that    Assume that both populations are normally distributed. (a) Test whether µ₂ at the…

Q: Using your favorite statistics software package, you generate a scatter plot with a regression…

A: Givenregression equation is y=-32.74x+19.35Correlation coefficient(r)=-0.557

Q: Dixie Showtime Movie Theaters, Inc., owns and operates a chain of cinemas in several markets in the…

A: Given data indicates weekly gross revenue as a function of advertising expenditures for a sample of…

Q: The following random sample was selected from a normal distribution: 8, 10, 7, 9, 13, 7. The formula…

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Q: n! nP, = %3D (n-r)! to find the value for each expression. 1) Use the formula for Permutations,…

A: Pr=n!n-r!n

Q: Which of the following statements are true about random sampling: none of the other answers are…

A: We will tell you which one is the correct choice.

Q: In a poll of 512 human resource professionals, 45.5% said that body pierc big personal grooming red…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: From past experience, cycling’s drug testing body has found that 2% of professional cyclists have…

A: Given Information: 2% of professional cyclists have taken an illegal substance in the past 6 months…

Q: naly mean of 60 kg and a standard deviation of 10 kg. A truck used to transport goats can only…

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Q: The yield of a chemical process is being studied. From previous experience yield is known to be…

A: Data given  91.6,88.75,90.8,89.95,91.3

Q: How long does it take for a chunk of information to travel from one server to another and back on…

A: Given,sample size(n)=14population mean(μ)=200

Q: MO21. An Article in the Journal of Sports Science (1987, Vol. 5, pp. 261-271) presents the results…

A: A random sample of 20 players; n=20 x=15.23s=0.6117α=0.05

Q: have a large n)? Would you reject the null hypothesis that Ho : µ = 0 for an alternative Ha : µ > 0?

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Q: An analyst at a state's environmental quality commission has just finished processing salt…

A: Given  P value=0.0166, level of significance ɑ=0.03

Q: LetX∼N(7,4). (a)  Find P(6 < X ≤ 10). (b) Find ξ so that P(6 < X < ξ) = 0.1716.

A: The following information has been given: A random variable X follows normal distribution with mean…

Q: Use the given confidence interval limits to find the point estimate p′ and the margin of error E.…

A: Solution-: We have given following C.I.  0.52&lt;p&lt;0.66  We want to find point estimate p' and…

Q: Write the expression a. Our favorite player scored 5 more points than another player (P) b. Our…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Wait times at a certain DMV office follow an Exponential distribution. The expected wait time is 27…

A: Given that

Q: The following table presents the intelligence quotients of runaway boys. Intelligence Quotient…

A: Given that  We have to find the what the data tell about the IQ of runways boys

Q: 9. In a science fair project, Emily conducted an experiment in which she tested professional touch…

A: Given that 9. In a science fair project, Emily conducted an experiment in which she tested…

Q: Use the given data to find the minimum sample size required to estimate a population proportion or…

A: The random variable X follows normal distribution. We have to find the sample size. This is z-test…

Q: 4. As an aid for improving employees working habits, eight employees were randomly selected to…

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Q: MO22. A hypothesis will be used to test that a population mean equals 10 against the alternative…

A: Given that Test is that whether the population mean is less than 10.

Q: A couple decides to continue to have children until they have two males. Assuming that P(male) =…

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Q: How many Kleenex should the Kimberly Clark Corporation package of tissues contain? Researchers…

A: Given that: Let x is number of tissues used during a cold Sample size n=100 and population mean μ=60…

Q: Steve Burns, host of the first season of Blue' clues recently bids goodbye to the show. Assuming…

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Q: Suppose Z follows the standard normal distribution. Calculate the following probabilities using the…

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Q: Noah is a professor in business statistics. He gives a 25 questions multiple choice tests. If each…

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Q: Using your favorite statistics software package, you generate a scatter plot with a regression…

A: Given that

Q: The middle 55% of jobs should be within what range of times?

A: here given, mean = 50 minute standard deviation  = 6 minute