Questien 11 A recent statistics exam yielded the following 10 scores. Construct a frequency polygon distribution using the cla below 81, 99, 77, 67, 93, 76, 79, 79, 71, 71 Class Limin Mints Tally Frequency 61-70 71-40 81-90 91-100 55.5 65.5 75.5 85.5 95.5 105.5 kouanbay

Q: 1. u',= E(X")= the co-efficient of i" o" in the expansion of ø (@) in series n! of ascending powers ...

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Q: The standard deviation of 15 scores was 5 and the mean was 85. What was the variance.   2. Compute t...

A: Note: Please repost remaining questions as I can author only 1 question as per my policy Given data,...

Q: TOPIC :Evaluating Combination Notation Analyze and answer the following problems. a)In the Philippi...

A: Combination determines no. of possible ways in which items can be arranged (order does not matter).

Q: Calculate the following for the dată Below. 370, 470, 340, 520, 330, 460 a) Mean: b) Sample standard...

A: Given data, 370,470,340,520,330,460  

Q: A die is rolled 15 times. Denote by X the number of times it shows six spots. Calculate the standard...

A: a die is rolled 15 times.X: the number of times it shows six spots.X~binomial(n,p)where n=15 ;   no....

Q: Cupauonal accidents were recorded per week för every week in the past year. The data are summarised ...

A: Total weeks = 52 Data in histogram : no. Of accidents per week. We have to choose right options 

Q: Compute the standard scores for the batting averages of Cobb, Williams, and Brett to compare how far...

A: Given: Decade Mean sd Sample mean 1910 0.266 0.0371 0.42 1940 0.267 0.0326 0.406 1970 0.26...

Q: Use the probability distribution to complete parts​ (a) and​ (b) below.     The number of defects pe...

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Q: A study was conducted to determine whether the final grade of a student in an introductory psycholog...

A: Given that By using the excel method of regression the output is 

Q: The table summarizes results from pedestrian deaths that were caused by automobile accidents. Pedest...

A: From the given table we complete the table as   

Q: 2. Let X be exponentially distributed with population mean u. Recall that the exponential cdf is F(x...

A: @solution:::

Q: a) Out of 5 mathematicians and 7 engineers, a committee consisting of 2 mathematicians and 3 enginee...

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

Q: Section 5.4 (please help with TI-84 calculator if possible) The lengths of lumber a machine cuts ar...

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Q: Assume a member is selected at random from the population represented by the graph. Find the probabi...

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Q: ​P(4<x<8​)=​P(4​.5)+​P(5​.5)+​P(6​.5)+​P(7​.5)=enter your response here     B. ​P(5<x<7​)=​P(6​)=ent...

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Q: What proportion of the variation in y can be explained by the variation in the values of x?

A: It is given that Correlation between two variables X and Y is r = 0.829

Q: About 5% of hourly paid workers in a region want the prevailing minimum wage or less. A grocery chai...

A: Given that, Let X is a random variable that shows the number of employees out of 283 who earn the pr...

Q: Calculate the confidence interval using the information below. Mean: 1020 Sd: 30 N:300 alpha:...

A: Given N=300 Mean=1020 Sd=30

Q: An investigator compared two means using the independent sample t-test with 83 degrees of freedom an...

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Q: A student answers randomly three True (T) or False (F) questions. v Make a list of all possible outc...

A: Given Student answers randomly 3 True (T) or False (F) questions

Q: The following refer to the following data set: 91 83 94 36 63 35 57 54 63 99 What is the mean (a) of...

A: We have given that,  The data set is,  91,83,94,36,63,35,57,54,63,99 Then,  We will find the mean, m...

Q: An investigator is interested in testing the recovery rate post intervention between a new and an ex...

A: Solution: H0: p = 0.6 H1: p &gt; 0.6 Let n be the sample size. Standard error when p = 0.6, = sqrt(0...

Q: A machine used to fill gallon sized paint cans is regulated so that the amount of pain dispensed has...

A: Given: μ=131σ=0.20n=40x¯=130.9

Q: For a standard normal distribution, find c if P(z < c) = 0.3862 c=

A: Given For a standard normal distribution, P(z &lt; c) = 0.3862

Q: From the data given below, construct the index number for the year 2013 on the base Commodities Unit...

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Q: What is the relationship between the critical value with the level of significance (alpha)?

A: here use basic of significance level and critical value

Q: Find the critical values χ2L and χ2R for the given confidence level c and sample size n. c=0.8​, ...

A: Given that, at 80% confidence level i.e. c = 0.80  and sample size, n=29 We need to find Find the cr...

Q: A binomial probability is given. Write the probability in words.​ Then, use a continuity correction ...

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Q: A store manager gathers some demographic information from the store's customers. The following chart...

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Q: 4-2-1. Bayes' Theorem for Future Events. The probability of the materialisation of another event C, ...

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Q: Suppose that the random variable z, shown below, represents the number times . P(x) represents the p...

A: a) The random variable x represents the number of times a randomly selected person having received t...

Q: se the probability distribution to complete parts​ (a) and​ (b) below. Activities    Probability 0 ...

A: Given data, Activities    Probability0    0.0571    0.1212    0.1643    0.1784    0.2145    0.1296  ...

Q: Consider the series xt = sin(2πU t), t = 1, 2, . . ., where U has a uniform distribution on the inte...

A: Given that,        Xt= sin(2πU t), where,       t = 1, 2, . . .,       U has a uniform distribution ...

Q: In a popular online role playing game, players can create detailed designs for their character's "co...

A: The number of visitors purchased more than one costume is 10.

Q: The following data represents the GPA of a sample of 15 students enrolled in a math class. Use techn...

A: Introduction: For the given sample of 15 GPA values, the listed quantities are to be obtained using ...

Q: A. A random sample of 64 SAT scores of students applying for merit scholarships showed an average of...

A: We have given that,  Sample size (n) = 64 , average (x̄) = 1400 and standard deviation (s) = 240 The...

Q: A mechanic sells a brand of automobile tire that has a life expectancy that is normally​ distributed...

A: Given that  A mechanic sells a brand of automobile tire that has a life expectancy that is normally​...

Q: For each of the states, use the summary statistics and find the P(x<=11) using z-statistics. Assume ...

A: We have given that.   X~N( μ , ?^2 )   μ =8.413793 , ? =2.121611   Z-score =( x - μ )/?

Q: Test the significance of the correlation coefficient at α = 0.05 between time spent for studying and...

A: Null Hypothesis: H0: There is no significance of the correlation coefficient  between time spent for...

Q: According to an almanac, 80% of adult smokers started smoking before turning 18 years old. (a) Compu...

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Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up...

A: formula for the sample size is

Q: Determine the following event if one card is selected at random using a standard deck of playing car...

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Q: ssume the random variable x is normally distributed with mean μ=88 and standard deviation σ=4. Find ...

A: Given data,Mean μ=88sd σ=4P(X&lt;81)=?

Q: 4-2-1. Bayes' Theorem for Future Events. The probability of the materialisation of another event C, ...

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Q: Estimate the absolute standard deviation and the coefficient of variation for the results of the fol...

A: We have to estimate the absolute standard deviation and coefficient for the given calculations.

Q: What is the expected value and variance of flight time?

A: Given that x~u (120 ,140 ) Find Expected value =? Variance =?

Q: The line width for semiconductor manufacturing is assumed to be normally distributed with a mean of ...

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Q: Questien 2 The rg e s e number of or acderdsi the last year or a samgle of 25 dven Noumbe id e Wne T...

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Q: Company A uses a new production method to manufacture aircraft altimeters. A simple random sample of...

A: From the provided information, Sample size (n) = 12 Level of significance (α) = 0.05

Q: Assume you record the number of "grand prizes" for a huge sample of 100 spins. What will be the stan...

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