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In Nancy's STAT 225 class, 75% of the students passed (got a C or better) on Exam 1. Suppose we randomly choose 10 students with replacement. Let X be the number of student(s) who passed. What is the variance of X?
Assume that, among residents of a large Florida subdivision, the population mean age is 65 years old, the population standard deviation is 2 years, and that the age variable is distributed normally.
What is the probability that it will crash at least two times in a given semester? What is the probability that it will not crash at all in a given semester?
The Bunte Auto Repair Shop received a shipment of four carburetors. One is known to be defective. If two are selected at random and tested.
If these answers were combined into single statistic, how could we explain sample space? Mention how many elements are in sample space?
a large university wants to estimate what proportion of their full time math students are male. if a random sample of
let x and y be independent geometric distributions. u minxy v x - y a show that u and v are independent b find the
The probability that Traci Muldone will die during the 10-year term of a life insurance policy is assessed by the insurance company at 1/5. Arthur Average's probability of living to the end of the 10-year period is reckoned at 95%
which of the following is true for a symmetrical distribution?a. mean modeb. median modec. the mean median and mode
given a one independent variable linear equation that states cost in k and given the following information calculate
a random variable x takes values between 0 and 4 with a cumulative distribution functionfx x216 for 0 x 4a sketch
a car rental agency at a local airport has available 5 fords 7 chevrolets 4 dodges 3 hondas and 4 toyotas. if the
Bingo Hamburger Co has a chain of 12 stores in a large city. Sales figures and profits for the stores are given in the following table. Obtain a regression line for the data & predict profit for a store assuming sales of $10 million.
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