The appropriate interval width for a random sample of 100 observations that fall between 50 and 250 is O A 10 О В. 25 А ОС. 15 O D. 20

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A: Note: " Since you have asked multiple sub-parts, we will solve the first three sub-parts for you. If…

Q: 17) Assume that two samples are independent simple random samples selected from normally distributed…

A: The conditions for the Normal-distribution are appropriate as given below: The samples are randomly…

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A: mean  μ=160σ=12n=12 x~N(160,12)

Q: number 7

A: a.The formula for mean and standard deviation is given by:

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Q: random variable X has a mean value of 20 with a standard deviation of 4.  If we obtain a random…

A: The probability that the sample average of X is at most 19 = P(X<=19) = 0.0228

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Q: Suppose that average male weight in the US is 175 pounds with a standard deviation of 25 pounds.…

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Q: A random sample of 100 students is taken from the population of all part-time students in the U.S.,…

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Q: Question 18 The Score obtained on an emotional intelligence test is normally distributed with an…

A: normal distribution ,μ=120σ=10.5 probabilty that a person will optain a score of less than 124=?

Q: The diameter of steel rods manufactured on two different extrusion machines is being investigated.…

A: Sample 1 : x¯1 = 8.73s1 = 0.591   Sample 2 : x¯2 = 8.68s2 = 0.632 We have been provided that…

Q: Q2. (Unit 6) Suppose three samples (10, 15, 20) are drawn from the normal distribution. a) What is…

A: Given: Sample distribution as 10, 15, 20 drawn from the normal distribution.To find: a) Point…

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Q: a) How much difference is there between the mean for the treated sample and the mean for the…

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Q: 4. All freshmen in a certain school were found to have variability in grades expressed as a standard…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: A population has a standard deviation of 34. We take a random sample of size 30 from this…

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

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Q: The means of two random samples of size 9 and 7 are 196-42 and 198.82 respectively. The sum of the…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.