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Once down to about 15, the world's only wild flock of whooping cranes now numbers a record 237 birds in its Texas Coastal Bend wintering ground (www.SunHerald.com). The average whooping crane egg weighs 208 grams, with a standard deviation of 1.7 grams. Assuming the distribution of weights is normally distributed, 4% of whooping crane eggs weigh less than how many grams?
The budgeting process for a Midwestern college resulted in expense forecasts for the coming year (in $ millions) of $9, $10, $11, $12, and $13. Since the actual expenses are unknown, the following respective probabilities are assigned: .3, .2, .25..
Comparing the results from (a) and (e), what happens to the required sample size when we increase the confidence level?
What control limits should be applied to his sample?
From an urn containing balls, a ball was drawn, weighted and replaced. This experiment was repeated 5 times. what is the standard error of sample mean?
Found mean number of sticks of gum chewed per day was 9. Standard deviation of population is 1. At α = .05, is number of sticks of gum person chews per day actually is greater than 8?
Define a game and prepare the odds of winning. The game could be a card game with two cards or a dice game. Use MS-Excel (if possible) to solve this problem
Compute the relative frequencies and percentages for all classes. Draw a histogram and a polygon for the relative frequency distribution.
He notices that 21 of the throws come up 7. State the null and alternative hypothesis, and find the P-value of his observations.
Assume that another counselor decided to extend the aforementioned study by collecting data on 14 children. His study yielded the following results:
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
Add line-of-best fit (trend line/linear regression line) to your scatterplot. Write down the equation of the trend line below.
he length of time a person spends waiting in a physician's office for an appointment can be a frustrating experience. The results below are the responses of internists from two multispecialty group practices to the following question:
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