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Ten asthmatics were asked to compare the effect of salbutamol and fenoterol sprays in relieving their asthma attacks. Assume that salbutamol and fenoterol are equal in terms of effectiveness and side effects in all people, so that the preferences expressed are simply the reflection of a 50-50 random choice.
a. With this assumption, what is the probability that
i) zero people prefer fenoterol to salbutamol?
ii) one prefers fenoterol?
iii) two prefer fenoterol?
iv) three prefer fenoterol?
v) four prefer fenoterol?
vi) five prefer fenoterol?
A group of teenagers were monitored closely over the period of several weeks to measure how frequently they watched violent television programs.
The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample mean and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error for the two samp..
What is the probability that the contaminated can is selected for testing?
Two independent samples of sizes 16 and 26 were taken. In a test of equality of population means of the two samples, how many degrees of freedom are associated with the critical t-value?
The researcher also gathers data on age and major to see if there is any connection between these varibales and frequency of sexual harassment.
Rank the funds by using this alternative measure of risk. Which, if any outperformed the market on the risk-adjusted basis.
To find out whether two categorical variables are independent, one should use the.
Can you tell me why is a data analysis plan important for good business research? What are descriptions of some of a plan's major components and what data analysis tools can be included.
Use the following data to write the normal equations of the linear regression between Y and X, and find the least squares regression.
Carry out test of independence to find out whether employee health insurance coverage is independent of size of company. Use α = 0.05 level of significance.
Compute the effect size with gender as the grouping variable and ADDSC as the dependent variable.
What are the theoretical parameters for the sampling distribution based on these 40 trains? Assume you are dealing with an infinite population of trains.
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