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Looking for help with this one. I dont see anythign wrong off the bat, it seems ok. Is the sample size too small?
Suppose that you have been hired to estimate the percentage of adults in your state who are literate. You take a random sample of 100 adults and find that 96 are literate. You then obtain a 95% confidence interval of 0.96± 1.96 sqrt(( 0.96)( 0.04)/ 100), or 0.922 to 0.998. From it you conclude that you can be 95% confident that the percentage of all adults in your state who are literate is somewhere between 92.2% and 99.8%. Is anything wrong with this reasoning?
to use instruments in a shared research lab you first have to ask the lab monitor. she will then walk into the lab to
An online book store wants to determine if there is an association between coupon redemption and gender. After a special coupon broadcast to its reward members, the following data on coupon redemption at check out were collected.
Is there an alternative test to the chi squared test? What if my results give an expected frequency below 5, which stats book states that these should be treated with caution?
While some teenagers received no allowance, others reported receiving $200 per week. Based on this information, the mean allowance for U.S. teenagers is most likely 0 $50.
A mean of 68 years and a standard deviation of 3.5 years. Find the age at which payments have ceased for approximately 86% of the plan participants.
What distinguishes regression from ANOVA? What are the assumptions and limitations of each, and when should one be used in place of the other
Is there a method which is accepted across industries for determining the minimum size of valid sample? N>50 +(8m aka 8 times the number of independent variables)
1. questions based on a distribution of scores with and the standard deviation 6.38. draw a small picture to help
What is a p-value in testing hypothesis? How does this p-value help us to decide to/not to reject a Null hypothesis? What might happen if we do not use this p-value in particular, when we are rejecting a Null hypothesis?
A state meat inspector in Iowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled “3 pounds.” Of course, he realizes that the weights cannot be precisely 3 pounds. A sample of 36 packages reveals the m..
an ordinary dice was thrown 50 times and the resulting scores were summarised in a frequency table. the mean score was
If the weekly average expenditure of all households is $53,000 but an expert argues that the weekly expenditure is more than $53,000, test his claim at a 5% level of significance and interpret your results.
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