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There is this coin that is not balanced. The probability of getting a head is four times the probability of getting a tail. Suppose this coin is tossed 5 times. Give the probability of getting at least 1 head. Express your answer as a decimal to several places past the decimal or as a common fraction.
question a recent study examined the number of unemployed people in 5 cities who are actively seeking employment. at
Use this information to find a 95% confidence interval for the difference in the two proportions, Pm-Pw, where Pm is the proportion of men who support the proposed law and Pw is the proportion of women who support the proposed law.
Families in the USA have a monthly magazine that discusses issues related to health and health costs. After surveying 23 of their subscribers
Calories in each hamburger measured. Can the reporter conclude, at α = 0.05, that the hamburgers from the two chains have a different number of Calories?
is there a relationship between the race of violent offenders and their victims? data from the u.s. department of
Find the mean and standard deviation of the sampling distribution of y‾.- Draw a sketch of the sampling distribution of y‾. Locate the mean on the graph.
At the 1% significance level, can it be concluded that the current distribution of responses differs from that of a year ago ?? Formulate and test the appropriate hypotheses. Use the critical value approach.
q1.a multiple-choice test consists of 12 questions with 4 possible answers to each question. in how many ways can the
Describe the shape of a waiting time {geometric) distribution for a given proba, bility p of a success on each trial. Will the first bar in a waiting time distribution always be the highest? Why or why not?
Is the distinction among various parts of the bell-shaped curve arbitrary or is there certain logical and rational principle involved that creates such distinctive demarcations shown in a chart like this?
a subsample from the current population survey is taken on weekly earnings of individuals their age and their gender.
What is the probability that a particular state will have more than 2.5% of its income tax returns audited?
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