Suppose that the duration of a particular type of criminal trial is known to have a mean of 21 days and a standard deviation of 7 days. We randomly sample 9 trials. Part (a) O Part (b) O Part (c) Part (d) 80 percent of the total of 9 of these types of trials will last more than how long? (Round your answer to two decimal places.) 0.8 |× days

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A: (20) The value of z-test statistic is, z = 1.50  

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Q: If a treatment produces a sample mean of M = 25 with s = 18 among a sample of n = 36, which t-statis...

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Q: QUESTION 12 You may need to use the appropriate appendix table or technology to answer this question...

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A: It is given that margin of error (E) is 0.02 and the confidence level is 0.90.

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A: X represents a random variable coming from a normal distribution with mean, μ=3 Since, PX>4.9=0.3...

Q: Assume the random variable X is normally distributed with mean μ=50 and standard deviation σ=7. Comp...

A: Mean = 50 Standard deviation = 7

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Q: Assume that the heights of men are normally distributed with a mean of 66.9 inches and a standard de...

A: Let "M" be the mean height of the men.

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Q: Which of the following is a Discrete Random Experiment? Growth of a tree over a year Value of an...

A: It is widely used in the field of statistics. It is very useful. 

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A: The number of defective disks is 5. The total number of disks is 100.

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Q: Conduct your answer in excel.

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A: Given, The term clinical means that the study involves people.

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Q: If 46% of all Americans have a pet dog, find the probability that 3 randomly selected Americans will...

A: P(Americans have a pet dog) = 46% = 0.46 Sample size = 3

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A: The type of study design that can assess temporal relationship :

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A: Binomial distribution with n=3 and p=0.05 ==> P(X=x)=3Cx*(0.05^x)*(0.95^(3-x)) for x=0,1,2,3 The ...

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.