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A local courier service reports that 95% of bulk parcels within the same city are delivered within two days. Six parcels are randomly sent to different locations. What is the probability that all six arrive within two days?
How would you find the normal approximation to the binomial probability P(x = 5) in part A? Please show how you would calculate µ and σ in the formula for the normal approximation to the binomial, and show the final formula you would use without g..
Five black and five white marbles are in a box. without looking, three marbles are taken from the box without replacement. what is the probability that all three are black?
The types kinds of statistical information collected in your professional setting. Provide examples to illustrate the information/data.
Assume the reliability of a product is given by an exponential distribution with a mean of 1 year. How long would it take to achieve a 10% failure rate?
At a = 0.05, can you reject claim that at least 52% of adults are more probable to purchase a product when there are free samples?
Mean and standard deviation for new sample were then computed to be M _ 6 and s _ 3. Write down the values of mean and standard deviation for original sample?
You've been recently hired as a marketing analyst in an advertising agency. You are assigned the task of assessing the impact of direct marketing promotions.
What can you say about the effect of sample size on confidence intervals?
Advertisers need to know which age groups are likely to see their ads. Purchasers of 120 copies of Cosmopolitan are shown by age group.
Stating assumptions on which your arguments and conclusions are based, sum up the statistical evidence regarding effectiveness of this diet.
The table below shows the scores of a group of 15 students in mathematics and art: Determine if the locations of distribution of scores for these students differ significantly for the two subjects. Use the hand calculation method and then use PHSta..
Write introduction to SPC (STATISTICAL PROCESS CONTROL)? Describe the use of SPC tools used at D2D?
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