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Hypothesis testing with 2 samples:
Test the claim that proportion of men who own cats is smaller than the proportion of women who own cats at the .10 significance level.
Based on a sample of 40 men, 30% owned cats.
Based on a sample of 80 women, 40% owned cats.
The test statistic is (2 decimals): _____
The p-value is: (2 decimals): _____
It is a left-tailed test which fails to reject the null hypothesis.
Generate a frequency distribution table starting with classes 60-79, 80-99, 100-119, etc. Compute the Arithmetic mean time taken over each kilometer.
a survey conducted by the american automobile association showed that a family of four spends an average of 215.60 per
1. a normally distributed population has a mean micro32 and a standard deviation ?7. for a set of samples of size
Thirty-five sophomores, 37 juniors and 37 seniors are randomly selected from 247 sophomores, 413 juniors and 348 seniors at a certain high school. What sampling technique is used?
A tire company made a sampling distribution on one of its brands of tires and determined that the tire had a mean life of 56,000 miles with a standard deviation of 18,100 miles.
Calculate the Standard Error of the mean(SEM) using the Central Limit Theorem, and explain how this equation supports your answer.
You are trying to estimate the average amount a family spends on food during a year. In the past the standard deviation of the amount a family has spent on food
suppose we roll a die 10 times. what is the approximate probability that the sum of the numbers obtained lies between
The thing about selling all of those drugs, devices, and solutions is that a lot can go wrong. Nearly every product that Baxter delivers is a matter of life and death.
Diarrhea can kill children and is often caused by rotavirus. Read the abstract below, and answer the questions that follow.
What type of test for population means should be performed when examining a situation in which employees are first tested, then trained, and finally retested?
Electronic baseball games manufactured by Tempco Electronics are shipped in lots of 25. Before shipping, a quality control inspector randomly selects a sample of 6 from each lot for testing. If sample contains any defective games, the entire lot i..
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