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Assume identical twins are always of the same sex, equally likely boys or girls. Assume that for fraternal twins the firstborn is equally likely to be a boy or a girl, and so is the secondborn in dependently of the first. Assume that proportion p o of twins are identical. Proportion q = 1 -p fraternal. Find formulae in terms of p for the following probabilities for twins:
a) P(both boys)
b) P(firstborn boy and secondborn girl)
c) P(secondborn girl |firstborn boy)
d) P(secondborn girl |firstborn girl)
Assuming that a hypothesis test of the claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.
The probability that the pro shop sells 36 dozen balls is 0.59; otherwise, the pro shop sells 21 dozen balls. What is the standard deviation of the number of balls the pro shop sells in a month? (please round your answer to 2 decimal places)
According to Money, the average price of a home in Albuquerque is $165,000.6 Suppose that the reported figure is a sample estimate based on 80 randomly chosen.
If "Some assassinations are morally justifiable actions" is false, what is the truth value of the following statements?
The output voltage X from the reciever in a particular binary digital communcations system,
a school of optometry conducts a study in which 50 workers arerandomly selected from the population of white-collar
A researcher is investigating whether non-white minorities commit a disproportionate number of homicides. He uses demographic data from Detroit.
A stabilized precision rate table uses a precision tachometer and a DC direct-drive torque motor, as shown in Figure P10.5. We want to maintain a high steady-state accuracy for the speed control.
A random sample of 61 observations produced a sample mean of 95. Using α=0.025, would you reject the null hypothesis? The population standard deviation is known to be σ=11.
A marketing agency has developed three vacation packages to promote a timeshare plan at a new resort. They estimate that 20% of potential customers will choose the day plan
Recorded set of data has maximum value 12. However, when the data was entered into the computer, this value was entered by mistake as 120.
The following represents the probability distribution for the daily demand of microcomputers at a local store. The probability of having a demand for at least two microcomputers is
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