According to a gallup survey of boys 77% of boys had played computer games in the past week compared to 65% of girls. You take and SRS of 104 boys and 120 girls Find the mean of each sampling distribution

Q: If our value is not biased, the probability that the sampling error will be a negative value (or the...

A: Here use basic of sampling error and sampling distribution 

Q: (a) F(x). O F(x) = 1 + e0.1-x O F(x) = 1 – e0-1-x O F(x) = 1 – e-0.1-x O F(x) = 1+ e-0.1-x eTextbook...

A: We have given that the waiting time in minutes has probability density function f(x) = 0.1*e0.1x

Q: Suppose X~N (μ,σ') then X – H - - N (0, 1) o2 O True O False

A:

Q: Given the probability mass function below. What is P(X > 4)? Sample point x 3 4 P(X-x) 1/9 2/9 3/9 2...

A: Given data is  sample point x 1 2 3 4 5 P(X=x) 1/9 2/9 3/9 2/9 1/9  

Q: Amber rolls a 6-sided die. On her first roll, she gets a "4". She rolls again. (a) What is the prob...

A: In a fair 6-sided die, the probability of rolling any number in a single roll is 1/6. That means, P(...

Q: The following table gives indices of industrial production of registered Calculate the value of the ...

A: We have given that data. Formula used  coefficients of correlation. r= SSXY /sqrt( SSXY × SSYY)

Q: 4. N = 15,000 and e = 14% %3D 5. N= 22,000 and e = 2% %3D

A: Here use slovin's formula  

Q: Question: IQ scores are measured from 30 children who participated in Head Start and from 32 otherwi...

A:

Q: A. Find the mean of the set of data below and construct a sampling distribution, without replacement...

A: Solution-: Given data: xi: 5,8,11,14,17,20 (a) We find the population mean? (b) Complete the given t...

Q: c. Let X be a continuous random variable with the cumulative distribution function: if x < 0 1 if 0 ...

A:

Q: When bonding teeth, orthodontists must maintain a dry field. A new bonding adhesive called "Smartbon...

A: Given:

Q: Construct the confidence interval for the population mean u. c=0.95, x = 15.7, o = 7.0, and n= 75 A ...

A:   Given problem Given that   c = 0.95 x̄ = 15.7 σ = 7.0 n = 75  

Q: a. If A and B are independent, and A and B are independent, show that A and B are also independent.

A:

Q: Let X be a binomial random variable with a mean of 0.5 and a variance of 0.45. Find P(x is greater t...

A:

Q: Calculate pearson's Coefficient of correlation :

A: Here use Pearson's correlation coefficient 

Q: Suppose Y1, Y2, Y3, and Y4 are mutually independent and identically distributed exponential random v...

A: Given  Yi~exp(1)   

Q: III. Evaluate each expression. 1. 13! = %3D 2.10! = 3.7! =

A: 1) 13! 13*12*11*10*9*8*7*6*5*4*3*2*1 13! = 6227020800 2) 10! 10*9*8*7*6*5*4*3*2*1 10! = 3628800  

Q: Question: IQ scores are measured from 30 children who participated in Head Start and from 32 otherwi...

A:

Q: H: µ > Ho is an upper-tailed hypothesis test True False

A: Given hypothesis  H1 : μ&gt;μo    

Q: A true-false test contains 24 questions. In how many different ways can this test be completed? (Ass...

A: Given,Total no.of questions=24

Q: Which of the following tables can be used as a more exact substitute for the empirical rule? t table...

A: We know that- The Empirical rule is used to determine that 68% -95% -99.7% of the data lies in the i...

Q: Illustration 12.22. From the following series of annual data, for which the trend values have alread...

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Q: Why is it important to maximize the degree to which samples and data used to train or build algorith...

A: Training and testing an algorithm are a part of machine learning.

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: A pizza place has pizzas in 2 different sizes, with 7 different flavors for the crust, and 13 differ...

A:

Q: f(x) = 0.2 · e-02x Calculate the mean and variance for the random variable: E(X) = i V(X) = i

A: Given The waiting line at a popular bakery shop can be quite long. Suppose that the waiting time in ...

Q: The compressors used in refrigerators are manufactured by XYZ Co. at three factories at New York, an...

A: Let A1, A2, ... , Am be m mutually exclusive and exhaustive events with P(Ai) &gt; 0 for all i = 1, ...

Q: Fruity Combination – In the second round, Shawn has to correctly guess the combination of four fruit...

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Q: The seedlings of a particular type of tree are randomly dispersed in a large area, with an average o...

A: Here we have given that λ = 6 We will use Poisson distribution to find the probability

Q: 1. X follows a normal distribution with mean 1.4 and standard deviation of 0.4. If X has a correspon...

A: As per our guidelines we are suppose to answer only one question. Given,mean(μ)=1.4standard deviatio...

Q: a) Determine the proportion of wafers that exceeds 0.2125 micrometers of photoresist thickness. (Rou...

A: Here Given  the thickness of photoresist applied to wafers are uniformly distribute between 0.2069 a...

Q: Table 7.6 Price per Unitin 2015 Units Purchased 2014 2016 Good A $100 $2.00 $1.50 242.50 $150 Good B...

A: Given that  The price per unit for different goods in different years. Base year = 2015   We know th...

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: 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: From the following data calculate first four moments and also find the value of r, Monthly profits N...

A:

Q: The probability of a positive test result is

A: Here given, Testing for a disease can be made more efficient by combining samples. If the samples fr...

Q: Enter textA certain drug is claimed to be effective in curing colds. In a n experiment on 164 people...

A: Solution is given:  

Q: When bonding teeth, orthodontists must maintain a dry field. A new bonding adhesive called “Smartbon...

A: The test hypotheses are: Null hypothesis: H0: μ = 5.70 MPa Alternative hypothesis: H1: μ &lt; 5.70 M...

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

A: Given,sample size(n)=4sample mean(x¯)=$65.00standard deviation (S)=$13.00degrees of freedom (df)=n-1...

Q: Let x be a random variable that represents the batting average of a professional baseball player. Le...

A: " Since you have posted a question with multiple sub-parts, we will solve the first three subparts f...

Q: The following table gives indices of industrial production of registered Calculate the value of the ...

A:

Q: Suppose you are working with a data set that is normally distributed, with a mean of 200 and a stand...

A: As per our guidelines we can solve first three sub part of question and rest can be reposted. Soluti...

Q: A 12-sided die can be made from a geometric solid called a dodecahedron. Assume that a fair dodecahe...

A: Given that A 12-sided die is rolled oncethe sample space is {1,2,3,4,5,6,7,8,9,10,11,12}Total no.of ...

Q: Find the probability that when a couple has six children, at least one of them is a girl. (Assume th...

A: Given data,Couple has 6 childrenn=6The probability of getting a boy is 0.5 and getting a girl is 0.5...

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Q: A EXAM #2 IE 3477 Methods and Industrial Engineering March 11, 2021 1. (20 points total) A guard rai...

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Q: Compute the least-squares regression line for the given data set. 4 6. 7. 8.5 8.4 10 11.3 11.9 13.1 ...

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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 

Q: 20 wrist watches in a box of 100 are defective. If 10 watches are selected at random, find the proba...

A: Solution is given:

Q: Researches have conducted a survey of 2000 coffee drinkers asking how much coffee they drink in orde...

A: The chi-square test for proportion is a nonparametric test.