1. The grade in Psychological Statistics of a class in a preliminary exam are as fo No. of students Grades Deviation (CI) d fd fd2 90 – 92 3 87 - 89 5 84 – 86 10 81 – 83 12 78 - 80 15 75 – 77 72 – 74 4 69 – 71 2 C = n = fd = fd² =

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A: Given, n1=50 n2=407 p^1=40%=0.40 p^2=30%=0.30 α=0.10 x1=n1*p1=50*0.40=20x2=n2*p2=40*0.30=12

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Q: Use the data in the following table, which lists survey results from high school drivers at least 16...

A: From the given table we know thatTotal no.of high school drivers=737+157+3027+4428Total no.of high s...

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A: Given:   Data 10 11 8 14 7 10 11 8 7 8 22

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A: Solution-: Given: μ=8hours,σ=0.7hours We find, (a) If Saba’s z-score for his work hours was −1.3 , h...

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Q: find the values of p and q.

A: HERE GIVEN, discrete probability distribution of x and E(X) = 4

Q: Evaluate C( 7, 4) 35 O 70 84 O 104 O Option 2 From a class of 12 girls and 18 boys, how many study g...

A: we know that Crn=n!n-r!×r!

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A: From the given information, SST=10,800 and SSTR=4560.

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A: Given: Whether X follows the binomial distribution or not

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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 

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A: Given hypothesis  H1 : μ>μo    

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

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Q: A jar contains 10 red marbles numbered 1 to 10 and 12 blue marbles numbered 1 to 12. A marble is dra...

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Q: . If Z is a standard normal random variable find the following probabilities (Use Standard Normal Ta...

A: Solution: Let Z be the standard normal variable with mean 0 and standard deviation 1.  Z~N(0, 1)  

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Q: 10. Mingming, Mark's cat, recently got pregnant and is expecting 6 cubs according on her doctor. Mar...

A: According to the given information in this question It follows binomial distribution with parameters...

Q: Example 12. Calculate the mean deviation about the mean for the following data: x : 5 15 25 35 45 55...

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

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A: Given dataA study is undertaken to test the research hypothesis.A series of random slides are prepar...

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Q: We transfer æ into x* = log(æ) and fit a linear model y = ax* + b when –1 < x* < 1. What is the corr...

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will an...