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An article in Parenting magazine reported that 60% of Americans needed a vacation after visiting their families for the holidays. Suppose this is the true proportion of Americans who feel this way. A random sample of 100 Americans is taken. What is the probability that less than 50% of the people in the sample feek that they need a vacation after visiting their families for the holidays?
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
Aggregate the opinions of the experts by computing the minimum, maximum, 25 th percentile, 50 th percentile, and 75 th percentile values.
It costs ABC $0.5 per pound to ship the box containing the weights. Because it's an odd-shaped package, though, shipping the bar costs $0.6 per pound plus a $10 surcharge. Find the mean and standard deviation of the company's total cost for shippi..
Explain the applications of statistics in your own field (Business Administration/Accounting) - Construct a stem and leaf display.
At the 5% significance level, if the sample proportion is .45, and the standard error of the sample proportion is .035, the appropriate conclusion would be:
A sample of 81 business managers on the West Coast had an average breakfast cost of $7.65. 13. At a = 0.05, what is the test value?
Has the average community level of suspended particles for the month of August exceeded 30u/m3?
An independent testing services road-tested 36 of the automobiles.
The dealership would now like some general information based on the entire sample of vehicles. Calculate and explain the following:
If random sample of size n = 16 are selected, can we say anything about the xbar distribution of sample means?
Compute the grouped data mean for this distribution. Use MINITAB and using the original scores, compute the raw-data mean. Use MINITAB.
The pooled variance of two samples is:
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