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1. What is the relationship between confidence intervals and hypothesis testing? How are they the same? How are they different? Which one is better?
2. Explain what central limit theorem and sampling distributions are. How can it help us to bridge descriptive statistics and inferential statistics?
Given a mean score of 70, standard deviation of 15,percentile of 23.Find the Z score,T score and raw score.
We code middle-aged Americans as 1 and senior citizens as 0, the logistic regression model for senior citizens
Suppose that 46 percent of families living in a certain country own a car and 18 percent own an SUV. The Addition Rule might suggest, then, that 64 percent of families own either a car or an SUV. What's wrong with that reasoning.
Calculate a 90% confidence interval for the percentage of homes in the US that had guns at the time of survey.
1.an experiment was conducted to determine the effects of three different pesticides p1p2p3 on the yield of three
The sales of Lexus automobiles in the Detroit area follow a Poisson distribution with a mean of 3 per day. What is the probability that for five consecutive days at least one Lexus is sold?
given below are two applications of statistics descriptive and inferential. choose what type of application is being
in a recent year the average price of a microsoft windows upgrade was 90.38 according to pc data. assume that price of
Rita rows 12 km upstream and 12 km downstream in 3 hours. The speed of her boat in still water is 9 km/hr. Find the speed of the stream.
the number of christmas trees sold by a shop during the month of december is a discrete uniform random variable having
It is estimated that 55% of the freshmen entering a particular college will graduate from that college in four years.(a) What probability model should be used and why?
three players simultaneously toss coins. the coin tossed by a b c turns up head with probability p1 p2 p3. if one
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