Posting complete question just for context The average revenue per transaction in the population is Rs XXX . Based on this attribute only, would you be confident that this sample is...

Posting complete question just for context The average revenue per transaction in the population is Rs XXX . Based on this attribute only, would you be confident that this sample is...

First digit 1 2 3 4 5 6 7 8 9 Proportion 0.303 0.175 0.114 0.083 0.058 0.057 0.034 0.033 0.143 Fake records usually have fewer first digits 1, 2, and 3. What is the approximate...

For a normal distribution with mean μ = 81.2 feet and standard deviation σ = 12.4 feet, find the 16th percentile.

(b) If you choose 84 vehicles at random, what is the probability that more than half (that is, 43 or more) carry just one person? (Use the normal approximation.)

The weight of the eggs produced by a certain breed of hen is normally distributed with mean 64.5 grams (g) and standard deviation 5.9 g. If cartons of such eggs can be considered to be SRSs of size...

Construct a 95% confidence interval for a population mean. The sample mean is X = 76 and the standard error of the mean is σX = 4.

A sample of size 108 is taken from a normally-distributed population. The sample shows a sample mean X = 45 and a sample standard deviation s = 12. What is the estimated standard error of the mean...

A normally-distributed population has a mean μ = 74 and a standard deviation σ = 11. For a set of samples of size 8 taken from this population, what is the z-value for the proportion of the sample...

A normally-distributed population has a mean μ = 250 and a standard deviation σ = 65. For a set of samples of size 30 taken from this population, about 68.3% of the means will be in what interval...

A population has a standard deviation of 6.6. Calculate the standard error for a sample of size 50 taken from this population.

on my modified box plot, quarter 2 and 3 are both 6. How would this be graphed?

A manufacturer of light bulbs says that its light bulb have a mean life of 700 hr and a standard deviation of 120 hr. You purchased 144 of these bulbs with the idea that you would purchase more if...

normal distributions and finding the standard deviation

I calculated a percentage and I need to find out the error of that percentage. Example: Percentage difference is 10%. How do I find out the plus or minus error? So get something like this "0...

I'm having a little trouble with this

If two fair dice are rolled, find the probability of the following result. A double, given that the sum was 11.

1. What is the probability that 5 messages are received in an hour? 2. What is the probability that less than 3 messages are received in half an hour?

a combination lock consist of 26 letters of the alphabet. If a 3 letter combination is needed, find the probability that the combination will be ABC in that order. The same letter can be used more...

In a recent year, 8,420,717 male students and 2,782,246 female students were enrolled as undergraduates. Receiving aid were 63.2% of the male students and 65.1% of the female students. Of those receiving...

In a scholarly article from the Journal of Statistics Education, entitled Pig Data and Bayesian Inference on Multinomial Probabilities, the author states that, after rolling a pig die 11,954 times,...

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