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An analyst from an energy research institute in California wishes to precisely estimate the 99% confidence interval for the average price of unleaded gasoline in the state. In particular, she does not want the sample mean to deviate from the population mean by more than $0.06. What is the minimum number of gas stations that she should include in her sample if she uses the standard deviation estimate of $0.32, as reported in the popular press?
a mean guy gave you a nice sample from normal distribution with known variance. so the test should be easy. but he
country number of numbers drawn range of numbersunited kingdom 6 1 to 49finland 7 1 to 39florida 5 1 to 36assuming one
i what is the sampling distribution of a sampe mean for a normally distributed random variable.ii if a variable iq is
(a) Suppose that there existed a second bridge connecting the islands B and C, and also another bridge connecting the land areas A and D. Construct an Euler cycle that crosses each of the bridges exactly once.
Identify the null hypothesis, alternative hypothesis, test statistic, P-value and conclusion about the null hypothesis. Use the P-value method.
Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F. Is body temperature of 99.00 °F unusual? Why or why not?
the wall street journals shareholder scoreboard tracks the performance of 1000 major u.s. companies the wall street
suppose that a particular candidate for public office is in fact favored by 48 of all registered voters in the
In a speech to the Chamber of Commerce, a city councilman claims that in his city less than 15% of the adult male population is unemployed.
If a baseball player's batting average is 0.340 or 34%, find the probability that the player will have a bad season and only score at most 60 hits in 200 times at bat?
a manufacturer of college textbooks is interested in estimating the strength of the bindings produced by a particular
A spring-mass-damper system is shown in Figure AP8.1 (a).The Bode diagram obtained by experimental means using a sinusoidal forcing function is shown in Figure AP8.1 (b). Determine the numerical values of m, b, and k.
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