Question 30 Ising the 2^ rule, determine the number of class intervals(k) for the frequency distribution table(grouped data) given n=120. A k=6 k=5 k=8 D k=7

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A: We have given that p = 46%  = 0.46 n = 4

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A: Solution-: Given: μ0=40,Zstat=z=0.8569 We have:  H0:μ≤μ0=40  Vs   H1:μ>40 (Right tailed test)    ...

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Q: How many 4-digit numbers greater than 5000 can be formed from the digits 2, 4, 5, 7, 8, and 0? Assum...

A: How many 4-digit numbers greater than 5000 can be formed from the digits 2, 4, 5, 7, 8, and 0? Assum...

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Q: 4. Find the regression equation for predicting final score from midterm score, based on the followin...

A: For solution number 4 Given: y¯f=70sf=10x¯m=55sm=20r=0.60

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Q: In a certain distribution the following results were obtained. X = 45, Median = 48, Coeff. of Sk= – ...

A: σ=?  Mean=x̄=45, median=48, coefficient Sk=-0.4   

Q: If n=14, ¯xx¯(x-bar)=46, and s=6, find the margin of error at a 90% confidence level Give your answ...

A: We have given that,  Sample mean ( x̄) = 46, standard deviation   (s)=6 , sample size (n) = 14 and c...

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Q: Given class interval 40-44 of a frequency distribution table, what is the class width?   5   24  ...

A: Given ,class interval is  40-44

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Q: The following are the prices of commodities in 2016 and 2017. Calculate a price index based on price...

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Q: In a certain distribution the following résults were obtained. X= 45, Median = 48, Coeff. of Sk=- 0....

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Q: When conducting a hypothesis test (or test of significance), select all the true statement. assume t...

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A: Note: As per our company guidelines we are supposed to answer only first three sub-parts. Kindly rep...

Q: The mean score on a statistics test is 73.28 with a standard deviation of 7.86. You score a 70 on th...

A: We have given that.   X~N( μ , ?^2 )   μ =7.86 , ? =73.28   Z-score =( x - μ )/?

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Q: A designer has designed different​ tops, pants, and jackets to create outfits. How many different ou...

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Q: d) Let Y be a continuous random variable with a probability mass function: Derive the moment generat...

A: Given that  We have to find the derivation of moment generating function of Y :