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Consider the function given below: f(x) = kx4 0 < x < 2.76 What must be the value k so that f(x) is a valid probability density function? Give your answer to four decimal places.
The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed,
a sample of 35 different hr departments found that employees worked an average of 240.6 days a year. if the
If p(s/d)=30 % of the Democrats smoke cigars, and p(s/d')=50% of Republicans smoke cigars also. What is the probability that a cigar- smoking businessmen is a Republican?
The following frequency distribution shows the time (in minutes) that a sample of students uses the computer terminals per day. Compute the coefficient of variation.
The average hourly wage of employees of a certain company is $9.83. Assume the variable is normally distributed.
I read that a range of expression is a set of values of a given expression. This set may consist of the whole set of cardinals numbers xy or of a proper subject of the set of cardinals (as the expression 2x, whose range is the even cardinals).
An analyst working at BC Statistics is compiling a report on the use of the internet at home. In 1997, 250 randomly selected people were asked about the average amount of time spent on the internet per week.
an investor estimates that there is a 75 chance that a particular mutual funds price will increase to 100 per share
Using the scatter diagram (no calculations), would you estimate the linear correlation coefficient to be positive, close to zero, or negative?
Explain these results to a person who understands the t test for a single sample but knows nothing about the t test for independent means.
The standard deviation of all possible x values is called the?
Use the normal approximation to the binomial distribution and part (b) to answer the question: What is the probability that a seat will be available for every person who shows up holding a reservation?
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