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Thomas wants to know what percentage of females buy his product. Thomas knows his customers are 50% male and 50% female, and that 30% of all his customers buy his product.
He collects data on people who have already bought his product, and asks their gender. He finds that 70% of the people who bought his product were female.
What method would you use to answer Thomas' original question?
A.Simpson's Paradox
B.The answer is one of the numbers given in the problem - no method needed
C.Bayes' Rule
D.Law of Total Probability
For a test at the 0.05 level, what is the critical value of chi-square?- If the calculated value of the chi-square statistic is 8.13, what conclusion would be reached regarding the null hypothesis?
If random samples, each with n = 9 scores, are selected from a normal population with m = 80 and σ = 36, then what is the expected value for the distribution of sample means?
in the telephone survey technique introduced in exercise 6.5 what is the probability of two or fewer successful calls
Census Bureau data show that the mean household income in the area served by a shopping mall is $62,500 per year. A market research ?rm questions shoppers at the mall to ?nd out whether the mean household income of mall shoppers is higher than tha..
Measures of Central Tendency
1. An investment account is advertised as offering an interest rate of 15% p.a. compounded monthly. (a) Find the effective interest rate per annum. (b) Use the Excel function EFFECT to find the effective rate.
If the airlines' goal was to attain the same proportion of on-time arrivals as in 2004, do the preliminary results indicate that they have met this goal? Support your assertions.
i just need someone to answer all the question with a paragraph each. just needs to be a page 1-2 pages max. i am a
With reference to Example 4, use the theory of Exercise 22 to test the null hypothesis α = 21.50 against the alternative hypothesis α 21.50 at the 0.01 level of significance.
Show that the following quantities are random variables by explaining how they may be defined as functions on a probability space:
Field tests of this activity have shown that students are most dissatisfied with fa, cilities and most satisfied with the academics at their institution.
The duration of a voice telephone call is an exponential random variable T with expected value E[T] = 3 minutes. Data calls tend to be longer than voice calls on average. Observe a call and reject the null hypothesis that the call is a voice call ..
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