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A random sample of 20 purchases showed the amounts in the table (in $).20.2021.7462.4182.1644.3945.3266.5546.6727.1551.2485.6431.8471.8553.0233.7486.9314.8154.3277.2359.17The mean is $51.82 and the standard deviation is $22.32.a.) what is the standard error of the mean? (round to two decimal places as needed)b.) How would the standard error change if the sample size was 5 instead of 20 with the same sample standard deviation? Select the correct choice below and fill in any blanks within your choice?a.) the standard error would increase. The new standard error would be ___ times the old?b.) The standard error would decrease. The new standard error would be the old standard error divided by ___?c.) The standard error would not change
question 1 a package delivery service claims that no more than 5 percent of all packages arrive at the address late.
Determine the significance of the difference between the groups and determine whether building systems helped reduce new cases of malaria.
1) The number of girls who attend a summer basketball camp has been recorded for the seven years the camp has been offered. Use exponential smoothing with a smoothing constant of .8 to forecast attendance for the eighth year. 75, 78, 75, 120, ..
Decide how many of each of the following products your company should produce. The labor needed to produce product 1 is 4 hours, product 2 requires 9 hours of labor. Product 1 and product 2 both require 1 hour of inspection time before shipping. The ..
Approximately 10% of people are left-handed. If two people are selected at random, what is the probability of the following events?a. Both are right-handed.b. Both are left-handed.c. One is right-handed and the other is left-handed.
What is the difference in proportions in the original data and what is the p-value and what does it mean in terms of this specific problem
What assumptions about the number of pedestrians passing the location in an hour are necessary for your hypothesis test to be valid?
You take a random sample of size 100 from a normal population with unknown mean but known standard deviation 40. You plan to test H(null): mu=85 versus H(alternative): mu > 85. Your procedure will be to observe the sample then reject H(null) is xbar>..
A person estimates that his commute to work will most likely take 50 minutes. However, it could talk as long as 1 hour and 35 minutes worst case, or as little as 35 minutes best case. What is the approximate standard deviation based on the ab..
A project manager at System Design Corporation
What is a 95% confidence interval
Somerset Furniture Company's Global Supply Chain
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