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How many social robots would need to be sampled in order to estimate the proportion ofrobots designed with legs, no wheels to within .075 of its true value with 99%confidence. Given that a random sample of 106 robots showed that 63 were designedwith legs, no wheels.
Measures of Central Tendency
what is the appropriate procedure to test for significant difference in means between two groups? Implement the procedure using the critical-value method and what is the p-value?
Suppose we have a population with the mean of 100 and a standard deviation of 28.We take repeated samples of size 49 and calculate the mean of each sample to form a sampling distribution. Find the mean and standard deviation of the sampling distrib..
A clinical trial was conducted comparing a new compound designed to improve wound healing in trauma patients to a placebo. After treatment for 5 days, 58% of the patients taking the new compound had a substantial reduction in the size of their wou..
For a normal distribution, find the z-score value that separate the middle 90% of the distribution from the 10% in the tails.
Stanford Binet IQ scores have a mean of 100 and a standard deviation of 15. Albert Einstein reportedly had an IQ of 160. Convert Einstein's IQ score to a z score.
For the following data, determine whether or not right-hemisphere damage results in significantly reduced performance on the spatial skills task. Test with alpha set at .05 with one tail. The data are as follows:
Compute the correlation among the variables. Describe perfect correlation also negative correlation. Utilize the following data to answer questions related.
a person wants to decide the constituents of a diet which will fulfil his dai y requirements of proteins fats and
Find the sample mean and sample standard deviation of the amount citizens spend per year. When finding a confidence interval for the true mean spent of ALL citizens, should we use a z-score or a t-score? Why?
What is a p-value in testing hypothesis? How does this p-value help us to decide to/not to reject a Null hypothesis?
You survey a sample of 10 college students to measure their racial prejudice using a scale of 0 (no prejudice) to 100 (extreme prejudice). Here are the scores you obtained.
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