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Pocket Money A father pays pocket money to his daughter on different days as 10, 4, 15, and 12 U.S. dollars (USD). In cents (1 USD 5 100 cents), these pocket money values are 1000, 400, 1500, and 1200.
a. Compare the mean in USD with the mean in cents; do not forget the units. Explain what multiplying each number in a data set by 100 does to the mean.
b. Compare the standard deviation in USD and in cents; do not forget the units. Explain what multiplying each number in a data set by 100 does to the standard deviation.
For a Normally distributed statistic, how many standard deviations on either side of the mean do these alternative control limits lie?
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suppose 3 of cotton fabric rolls and 3 of nylon rolls contain flaws. of the rolls used by a manufacturer 70 are cotton
Find a 96% confidence interval for the true percentage of all households that have central air conditioning. Write a sentence that interprets this interval.
customers arrive at a two-chair shoeshin stand at the rate of 10 per hour. the average duration of a shoeshine is 6
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The national average SAT score (for Verbal and Math) is 1028. If we assume a normal distribution with σ = 92, what is the 90th percentile score? What is the probability that a randomly selected score exceeds 1200?
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