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A: Given information: Brand A Brand B Brand C Brand D 229 200 117 128 118 124 80 110 246 223…

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Q: prove the following generalization of the variance fomula varla X + by] =a² var[X] + b²var[Y] +…

A: E(aX+bY)=E(aX)+E(bY)=aE(X)+bE(Y) This we know

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A: Here the given information is   An elevator in an apartment building has a load restriction of 12…

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Q: Question 1 options: Nova has a pop quiz with 9 multiple choice questions. Each question has 3 answer…

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A: Given : Standard error, SE(b1) = 1.581

Q: Activity A B C a 3.5 40 60 m 5.0 8.3 12.0 b 9.0 10.0 17.0 Predecessor A B Given the above table,…

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Q: A researcher is planning to conduct a one-sample t-test to evaluate the effect of a treatment…

A: Given  x¯=40SS=30n=7 To find the estimated error

Q: For the following questions, THERE IS NO NEED FOR EXPLANATION. PLEASE PROVIDE JUST THE ANSWER THANK…

A: Given that data  27 33 29 31

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Q: (iv) The mean level of Mn in fruit juice samples (n = 5) detected by Mn absorbance at 279.5 nm was…

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A: Let  X be the random variable from normal distribution with mean (μ) = 105 and standard deviation…

Q: is μ = d dev Table of numbers of girls and probabilities Number of Girls x 012345678 Print P(x)…

A:

Q: Assume that the amounts of weight that male college students gain during their freshman year are…

A: From given : μ=1.3σ=5.1

Q: The data in the accompanying table represent the heights and weights of a random sample of…

A: The data table provided in the question is as follows : Height Weight 75 227 75 195 72 180…

Q: Consider the following population: (6, 7, 8, 9). For this population the mean is U=6+7+8+9 4 Suppose…

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A: We have given that,  Sample size (n) = 540 and favorable cases (x) = 270 Then,  99% confidence…

Q: The amounts of nicotine in Dytusoon cigarettes have a mean of 0.941 g and a standard deviation of…

A: given data normal distributionμ = 0.941σ = 0.313n = 40x¯ = 0.882

Q: Calculate and interpret the standard deviation of T

A: The probability distribution of T is: T P(T) T*P(T) T^2*P(T) $600 0.25 $150 90000 $650 0.1…

Q: Assume that women's heights are normally distributed with a mean given by μ = 62.6 in, and a…

A: Solution: Let X denote the women's height are normally distributed with mean μ=62.6 in and standard…

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Q: a voting machine), with a standard deviation of 120 seconds.  Given the long wait times for…

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Q: The data below have been taken from the cost records of the Halifax General Hospital. The data…

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Q: A study indicates that 37% of households have have a dog. You randomly sample 8 households. Find the…

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Q: An elevator has a placard stating that the maximum capacity is 1550 lb-10 passengers. So, 10 adult…

A: maximum capacity of elevator  = 1550 lb - 10 passangermen : normal distributionμ = 163 lbσ = 33…

Q: You may need to use the appropriate appendix table or technology to answer this question. After…

A: Note: Hi there! Thank you for posting the questions. As there are multiple sub parts, according to…

Q: Annual retail store revenue for a technology company from 2007 to 2017 are shown below. Year Period…

A: Here we use excel Software  enter data in excel  click on insert click on scatter

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Q: A survey found that women's heights are normally distributed with mean 63.6 in and standard…

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Q: what is the 95%CI upper and lower?

A: The 95% confidence interval for the mean difference is -13.921,-0.079.

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A: From given : μ=76σ=12.5

Q: A statistical program is recommended. A certain company produces and sells frozen pizzas to public…

A: We use excel to find answers enter data in excel  click on insert click on scatter

Q: Corporate triple-A bond interest rates for 12 consecutive months follow. O (a) Construct a time…

A: Given information: Month Interest rate 1 9.6 2 9.4 3 9.5 4 9.6 5 9.9 6 9.7 7 9.8…

Q: Engineers want to design seats in commercial aircraft so that they are wide enough to fit 90% of all…

A: Given that: Mean, μ=14.2 Standard deviation, σ=1.1