A study conducted by the research department of a pharmaceutical company claims that the annual spending (per person) for prescription drugs for allergy relief, , is greater than or equal to the annual spending (per person) for non-prescription allergy relief medicine, . A health insurance company conducted an independent study and collected data from a […]
For the binomial distribution with given values for n and p, state whether or not it is suitable to use the normal distribution as an approximation.n-15 and p=0.2 Explain your answer
I need An analysis of the current trends from three comparable cities in population size, utilizing the SARA model and the Crime Analysis Triangle. (Note:
I don’t understand how to complete the below assignment. Please help me!Your statistics teacher has repeatedly told your class that the more you study, the better you will do on the tests. You decide to verify this statement. You randomly select 12 classmates and ask them how long they studied for the last test and […]
Question #5: A statistics teacher wants to see whether there is a statistically significant difference in the ages of day students and night students. A random sample of 31 students is selected from each group. The data are given below. Test the claim that there is difference in the mean ages of the two groups. […]
Y-hat=20-2x, if we increase the value of x by 10, what kind of increase will we see in y?
One component of your college expenses is your book costs. A sample of students indicates that the average book cost for a semester is $230 and the standard deviation is $60. If nothing is known about the shape of the book cost distribution, what proportion of the students would have book costs that exceeded $350?
