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Question: An investment portfolio has equal proportions invested in five stocks. The expected returns and standard deviations (both in percent per year) are (8, 3), (5, 2), (12, 8), (7, 9), (14, 15). What are average return and standard deviation for this portfolio?
A student taking a ten-question, true-false diagnostic test knows none of the answers and must guess at each one.
A car rental company charges $50 a day and 20 cents per mile for renting a car. Let y be the total rental charges (in dollars) for a car for one day.
suppose that you wanted to determine if the males in your sales force differed from the females in your sales force in
The researchers hypothesized that leadership ability will increase at a decreasing rate with assertiveness. Set up the null and alternative hypothesis to test this theory.
Assume a 5% significance level. What are the null and alternative hypotheses? Please show all work to find the test statistic, critical value, and p-value. What is your conclusion? Interpret your conclusion in the context of the problem.
What to do : Write a memo to your instructor describing the audience of decision makers (primary) and others (secondary) for your Instruction Manual. Identify your primary audience and secondary audience, if any. For each audience, describe the fo..
A normal population has a mean of 80.0 and a standard deviation of 14.0. Compute the probability of a value between 75.0 and 90.0.
for the following claim find the null and alternative hypothesis test statistic p-value critical value and draw a
The exponential distribution has a characteristic that is called the "memoryless" property. This means P(X > x) = P(X > x + x0|X > x0).
A pediatrician is interested in studying the effect of Motrin on reducing temperature in young children. Four children with influenza have their temperatures taken immediately before and then 20 minutes after taking a standard dose
which is typically larger paxb or pa x pb? give an example of sets a and b for which these are the same
What is the probability that more than 75 of the selected drivers will be wearing a seatbelt?
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