A system for a random amount of time X (in units of months) is given by a density ;
(a) Find the moment generating function of X . Hence, compute the variance of X .
(b) Deduce the expression for the k th moment.
(c)Obtain the distribution function of X . Hence, compute that the probability that, 7 of such system, at least 4 will function for at least 6 units of months. State the assumptions that you make.
If I have the following Hypothese:
H1: Women tend to watch romantic films more than men
Apparently it's a chi-square because I'm measuring relationships between expected frequency and Observed frequency and also because Gender is on the nominal level. But what if this is designed for a survey in which questions are on the nominal, Ordinal and interval level (Likert scale - differential sementic) will the outcome still be a Chi-square?
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