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Salaries of all employees at a huge corporation have a mean of $63,500 and a standard deviation of $8,250.
Consider the sampling distribution of the sample means from samples of size 100.
That is if all possible samples of size 100 employees were selected, what would be the mean of all these sample means?
What is the standard deviation of these sample means?
What is the probability that the mean of a sample of size 100 will be less than $60,000?
What is three key strengths that will lead to positive results in developing supplier relationships?
You are in charge of a new study on the effect of caffeine and memory. From , a previous pilot study , you find that the effect size is 0.6. You want to have a type I error at 0.05 and a type II error of 0.2 . In your study you split your sample i..
a bakery buys sugar in 15-pound bags. the bakery uses 5000 bags of sugar each year. carrying costs are 20 per bag per
A leasing firm claims that the mean number of miles driven annually,u , in its leased cars is less than 13500 miles. A random sample of 70 cars leased from this firm had a mean of 13207 annual miles driven.
In a hospital study, it was found that the standard deviation of the sound levels from 20 randomly selected areas designated "casualty doors" was 4.1 dBA and the standard deviation of 24 randomly selected areas designated as "operating theaters" w..
question identify the type of observational study cross-sectional retrospective or prospective described below.a
Information about mutual funds provided by Morningstar Investment Research includes the type of mutual fund.
What are the variables and units in this regression?- What units does the slope have?- Do you think the slope is positive or negative? Explain.
Explain how two variables can have a perfect curved relationship yet have zero correlation. Draw a picture of a set of data meeting those criteria.
What is the probability that the sum of the dice is 13?
assuming that the data are normally distributed with a mean of 25 and a standard deviation of 1.25 what is the z-score
Create a bar graph using two different colors to represent the male and female categories. Use age to categorize and graph the average height.
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